J. Yang, A. Mouilleron, M. Monnot, C. Cordier, P. Moulin. Ultrafiltration for the biosecurity of fish production: The case of a sturgeon nursery. Aquacultural Engineering, 2023, 103, pp.102366. ⟨10.1016/j.aquaeng.2023.102366⟩. ⟨hal-04202096⟩ Plus de détails...
J. Yang, A. Mouilleron, M. Monnot, C. Cordier, P. Moulin. Ultrafiltration for the biosecurity of fish production: The case of a sturgeon nursery. Aquacultural Engineering, 2023, 103, pp.102366. ⟨10.1016/j.aquaeng.2023.102366⟩. ⟨hal-04202096⟩
Emilie Gout, Fatimatou Toure Lo, Mathias Monnot, Olivier Boutin, Pierre Vanloot, et al.. Coupling membrane processes with wet air oxidation for the remediation of industrial effluents. Chemical Engineering Journal, 2023, 472, pp.144937. ⟨10.1016/j.cej.2023.144937⟩. ⟨hal-04202142⟩ Plus de détails...
Emilie Gout, Fatimatou Toure Lo, Mathias Monnot, Olivier Boutin, Pierre Vanloot, et al.. Coupling membrane processes with wet air oxidation for the remediation of industrial effluents. Chemical Engineering Journal, 2023, 472, pp.144937. ⟨10.1016/j.cej.2023.144937⟩. ⟨hal-04202142⟩
Adrien Magne, Emilie Carretier, Lilivet Ubiera Ruiz, Thomas Clair, Morgane Le Hir, et al.. Recovery of Homogeneous Platinoid Catalysts from Pharmaceutical Media: Review on the Existing Treatments and the Perspectives of Membrane Processes. Membranes, 2023, 13 (8), pp.738. ⟨10.3390/membranes13080738⟩. ⟨hal-04202121⟩ Plus de détails...
Catalyst recovery is a major challenge for reaching the objectives of green chemistry for industry. Indeed, catalysts enable quick and selective syntheses with high reaction yields. This is especially the case for homogeneous platinoid catalysts which are almost indispensable for cross-coupling reactions often used by the pharmaceutical industry. However, they are based on scarce, expensive, and toxic resources. In addition, they are quite sensitive and degrade over time at the end of the reaction. Once degraded, their regeneration is complex and hazardous to implement. Working on their recovery could lead to highly effective catalytic chemistries while limiting the environmental and economic impacts of their one-time uses. This review aims to describe and compare conventional processes for metal removal while discussing their advantages and drawbacks considering the objective of homogeneous catalyst recovery. Most of them lead to difficulty recycling active catalysts due to their ability to only treat metal ions or to chelate catalysts without the possibility to reverse the mechanism. However, membrane processes seem to offer some perspectives with limiting degradations. While membranes are not systematically the best option for recycling homogeneous catalysts, current development might help improve the separation between pharmaceutical active ingredients and catalysts and enable their recycling.
Adrien Magne, Emilie Carretier, Lilivet Ubiera Ruiz, Thomas Clair, Morgane Le Hir, et al.. Recovery of Homogeneous Platinoid Catalysts from Pharmaceutical Media: Review on the Existing Treatments and the Perspectives of Membrane Processes. Membranes, 2023, 13 (8), pp.738. ⟨10.3390/membranes13080738⟩. ⟨hal-04202121⟩
In this study, we present a new approach for the growth monitoring of crystals using micro X-ray computed tomography (XCT). This technique allows us to track the evolution of the total crystal volume and surface in real time, and to calculate the growth rate. By segmenting the 3D XCT images using a robust method, we are able to extract detailed information about the crystals, such as their number, volume, diameter, and sphericity. Additionally, we determine the growth rates of individual crystal faces. Our method has the potential to greatly benefit the pharmaceutical and chemical industries, as it provides insight into the structural parameters of crystals during growth, which is crucial for optimization and control.
Gautier Hypolite, Jérôme Vicente, Hugo Taligrot, Philippe Moulin. X-ray tomography crystal characterization: Growth monitoring. Journal of Crystal Growth, 2023, 612, pp.127187. ⟨10.1016/j.jcrysgro.2023.127187⟩. ⟨hal-04071090⟩
Gautier Hypolite, Olivier Boutin, Sandrine Del Sole, Jean-François Cloarec, Jean-Henry Ferrasse. Evaluation of a water network’s energy potential in dynamic operation. Energy, 2023, 271, pp.127066. ⟨10.1016/j.energy.2023.127066⟩. ⟨hal-04504325⟩ Plus de détails...
To address the challenges of the energy transition, reducing consumption and optimizing energy production is crucial for all industrial sectors. In the future, water issues will be as important as energy issues, making the optimization of water supply systems critical. The water sector represents large energy consumption for pumping and heating. In regards to this consumption, water systems have a great potential for energy recovery through hydroelectric production or thermal energy recovery. This article aims to quantify the energy potential of water supply systems, which has not been well understood until now. The energy potential of these systems encompasses hydropower recovery and thermal potential, including heat recovery and cold recovery. For that, a method is developed to estimate this potential, including the recoverable power, its location, and its temporal variation. The method can be used for hydroelectricity production, as well as for heat and cold recovery. For a whole year, the results indicate a hydraulic potential of 15 MWh.km−1.year−1, and respectively 1650 MWh.km−1 .year−1 for heat recovery and 766 MWh.km−1.year−1 for cold recovery.
Gautier Hypolite, Olivier Boutin, Sandrine Del Sole, Jean-François Cloarec, Jean-Henry Ferrasse. Evaluation of a water network’s energy potential in dynamic operation. Energy, 2023, 271, pp.127066. ⟨10.1016/j.energy.2023.127066⟩. ⟨hal-04504325⟩
J. Yang, M. Monnot, Y. Sun, L. Asia, P. Wong-Wah-Chung, et al.. Microplastics in different water samples (seawater, freshwater, and wastewater): Removal efficiency of membrane treatment processes. Water Research, 2023, 232, pp.119673. ⟨10.1016/j.watres.2023.119673⟩. ⟨hal-03989908⟩ Plus de détails...
The distribution and fate of microplastics in different water sources and their treatment plants (seawater, three municipal wastewaters, a pharmaceutical factory wastewater, and three drinking waters) in France were studied. Currently, research in this field is still under exploration since almost no relevant standards or policies have been introduced for the detection, the removal, or the discharge of microplastics. This study used an improved quantitative and qualitative analytical methodology for microplastic detection by μ-FTIR carried out with siMPle analytical software. By investigation, wastewater was determined to contain the most abundant microplastics in quantity (4,203-42,000 MP·L-1), then followed by surface water/groundwater (153-19,836 MP·L-1) and seawater (around 420 MP·L-1). Polyethylene was the dominant material in almost all water types followed by polypropylene, polystyrene, and polyethylene terephthalate. Almost all treatment technologies could remove microplastics whatever the feed water types and concentration of microplastics, though some treatment processes or transport pipes could cause additional contamination from microplastics. The four WWTPs, three DWTPs, and SWTP in France provided, respectively, 87.8-99.8%, 82.3-99.9%, 69.0-96.0% removal/retention of MPs in quantity, and provided 97.3-100%, 91.9-99.9%, 92.2-98.1% removal/retention of MPs in surface area. Moreover, ultrafiltration was confirmed to be an effective technology for microplastic retention and control of dimensions of microplastics in smaller ranges both in field-scale and lab-scale experiments. The 200 kDa ultrafiltration membrane could retain 70-100% and 80-100% of microplastics in quantity and in surface area, respectively.
J. Yang, M. Monnot, Y. Sun, L. Asia, P. Wong-Wah-Chung, et al.. Microplastics in different water samples (seawater, freshwater, and wastewater): Removal efficiency of membrane treatment processes. Water Research, 2023, 232, pp.119673. ⟨10.1016/j.watres.2023.119673⟩. ⟨hal-03989908⟩
J. Yang, M. Monnot, Y. Sun, L. Asia, P. Wong-Wah-Chung, et al.. Microplastics in different water samples (seawater, freshwater, and wastewater): Methodology approach for characterization using micro-FTIR spectroscopy. Water Research, 2023, 232, pp.119711. ⟨10.1016/j.watres.2023.119711⟩. ⟨hal-04055825⟩ Plus de détails...
Microplastics of millimeter dimensions have been widely investigated in environmental compartments and today, studies are mainly focused on particles of smaller dimensions (< 500 µm). However, as there are no relevant standards or policies for the preparation and analysis of complex water samples containing such particles, the results may be questionable. Therefore, a methodological approach for 10 µm to 500 µm microplastic analysis was developed using μ-FTIR spectroscopy coupled with the siMPle analytical software. This was undertaken on different water samples (sea, fresh, and wastewater) taking into consideration rinsing water, digestion protocols, collection of microplastics, and sample characteristics. Ultrapure water was the optimal rinsing water and ethanol was also proposed with a mandatory previous filtration. Although water quality could give some guidelines for the selection of digestion protocols, it is not the only decisive factor. The methodology approach by μ-FTIR spectroscopy was finally assessed to be effective and reliable. This improved quantitative and qualitative analytical methodology for microplastic detection can then be used to assess the removal efficiency of conventional and membrane treatment processes in different water treatment plants.
J. Yang, M. Monnot, Y. Sun, L. Asia, P. Wong-Wah-Chung, et al.. Microplastics in different water samples (seawater, freshwater, and wastewater): Methodology approach for characterization using micro-FTIR spectroscopy. Water Research, 2023, 232, pp.119711. ⟨10.1016/j.watres.2023.119711⟩. ⟨hal-04055825⟩
J. Yang, M. Monnot, Y. Sun, L. Asia, P. Wong-Wah-Chung, et al.. Microplastics in different water samples (seawater, freshwater, and wastewater): Methodology approach for characterization using micro-FTIR spectroscopy. Water Research, 2023, 232, pp.119711. ⟨10.1016/j.watres.2023.119711⟩. ⟨hal-04055825⟩ Plus de détails...
Microplastics of millimeter dimensions have been widely investigated in environmental compartments and today, studies are mainly focused on particles of smaller dimensions (< 500 µm). However, as there are no relevant standards or policies for the preparation and analysis of complex water samples containing such particles, the results may be questionable. Therefore, a methodological approach for 10 µm to 500 µm microplastic analysis was developed using μ-FTIR spectroscopy coupled with the siMPle analytical software. This was undertaken on different water samples (sea, fresh, and wastewater) taking into consideration rinsing water, digestion protocols, collection of microplastics, and sample characteristics. Ultrapure water was the optimal rinsing water and ethanol was also proposed with a mandatory previous filtration. Although water quality could give some guidelines for the selection of digestion protocols, it is not the only decisive factor. The methodology approach by μ-FTIR spectroscopy was finally assessed to be effective and reliable. This improved quantitative and qualitative analytical methodology for microplastic detection can then be used to assess the removal efficiency of conventional and membrane treatment processes in different water treatment plants.
J. Yang, M. Monnot, Y. Sun, L. Asia, P. Wong-Wah-Chung, et al.. Microplastics in different water samples (seawater, freshwater, and wastewater): Methodology approach for characterization using micro-FTIR spectroscopy. Water Research, 2023, 232, pp.119711. ⟨10.1016/j.watres.2023.119711⟩. ⟨hal-04055825⟩
J. Yang, M. Monnot, Y. Sun, L. Asia, P. Wong-Wah-Chung, et al.. Microplastics in different water samples (seawater, freshwater, and wastewater): Removal efficiency of membrane treatment processes. Water Research, 2023, 232, pp.119673. ⟨10.1016/j.watres.2023.119673⟩. ⟨hal-03989908⟩ Plus de détails...
The distribution and fate of microplastics in different water sources and their treatment plants (seawater, three municipal wastewaters, a pharmaceutical factory wastewater, and three drinking waters) in France were studied. Currently, research in this field is still under exploration since almost no relevant standards or policies have been introduced for the detection, the removal, or the discharge of microplastics. This study used an improved quantitative and qualitative analytical methodology for microplastic detection by μ-FTIR carried out with siMPle analytical software. By investigation, wastewater was determined to contain the most abundant microplastics in quantity (4,203-42,000 MP·L-1), then followed by surface water/groundwater (153-19,836 MP·L-1) and seawater (around 420 MP·L-1). Polyethylene was the dominant material in almost all water types followed by polypropylene, polystyrene, and polyethylene terephthalate. Almost all treatment technologies could remove microplastics whatever the feed water types and concentration of microplastics, though some treatment processes or transport pipes could cause additional contamination from microplastics. The four WWTPs, three DWTPs, and SWTP in France provided, respectively, 87.8-99.8%, 82.3-99.9%, 69.0-96.0% removal/retention of MPs in quantity, and provided 97.3-100%, 91.9-99.9%, 92.2-98.1% removal/retention of MPs in surface area. Moreover, ultrafiltration was confirmed to be an effective technology for microplastic retention and control of dimensions of microplastics in smaller ranges both in field-scale and lab-scale experiments. The 200 kDa ultrafiltration membrane could retain 70-100% and 80-100% of microplastics in quantity and in surface area, respectively.
J. Yang, M. Monnot, Y. Sun, L. Asia, P. Wong-Wah-Chung, et al.. Microplastics in different water samples (seawater, freshwater, and wastewater): Removal efficiency of membrane treatment processes. Water Research, 2023, 232, pp.119673. ⟨10.1016/j.watres.2023.119673⟩. ⟨hal-03989908⟩
Gautier Hypolite, Jérôme Vicente, Philippe Moulin. X-Ray Tomography Crystal Characterization: Automatic 3D Segmentation. Microscopy and Microanalysis, 2023, 232, pp.119673. ⟨10.1093/micmic/ozad019⟩. ⟨hal-04055847⟩ Plus de détails...
Abstract Understanding the structural parameters of crystals during crystal growth is essential for the pharmaceutical and chemical industries. This study proposes a new method for 3D images of crystals obtained with micro X-ray computed tomography. This method aims to improve the crystal segmentation compared to the watershed methods. It is based on plane recognition at the surface of the crystals. The obtained segmentation is evaluated on a synthetic image and by considering the recognized particle number and convexity. The algorithm applied to three samples (potassium alum, chromium alum, and copper sulfate) reduced oversegmentation by 87% compared to watershed based on ultimate erosion while keeping the convexity of the recognized particle.
Gautier Hypolite, Jérôme Vicente, Philippe Moulin. X-Ray Tomography Crystal Characterization: Automatic 3D Segmentation. Microscopy and Microanalysis, 2023, 232, pp.119673. ⟨10.1093/micmic/ozad019⟩. ⟨hal-04055847⟩
Ahmad Ben Fakhri, Jacques Artaud, Gregory Cano, Philippe Moulin. Development of a Measure Cell to Assess by Amperometry Dissolved Oxygen in Vegetable Oils. European Journal of Lipid Science and Technology, 2023, pp.2200120. ⟨10.1002/ejlt.202200120⟩. ⟨hal-04055906⟩ Plus de détails...
Dissolved oxygen in vegetable oils is an important component of oil degradation over time. Various methods for the determination of dissolved oxygen in oils are proposed in the literature leading to very variable results. An amperometric method associated with a cell of measurement in dynamic mode makes it possible to determine the conditions of stability of the measurements of the relative dissolved oxygen concentration (RDOC, mg L−1) and the electrolysis current intensity (ECI) (nA) in seed oils and virgin olive oils. The effects of oxygenation/deoxygenation time and temperature on RDOC measurements are investigated. For virgin olive oils, the RDOC in bottles closed for eight weeks varies from 0 to 0.9 mg L−1. The nature of the fruitiness and the filtration of the oils have no influence on the RDOC. The monitoring of RDOC and ECI during the flow of virgin olive oil in a column open to air, simulating an industrial tank, shows differences in dissolved oxygen concentration due to a faster flow of oil in the center of the column than at the walls. This result is validated by a similar experiment with nitrogen inerting the column and by a numerical simulation. Practical applications: Knowledge of the oxygen dissolved in vegetable oils is an important factor in limiting the autoxidation phenomenon to increase their shelf life. The development of a cell for measuring the relative dissolved oxygen concentration (RDOC) in vegetable oils and its conditions of use, provides a tool for the RDOC applicable to the different stages of the manufacturing process and during storage or packaging. The RDOC measurement is particularly useful during long storage in tanks whether inerted or not.
Ahmad Ben Fakhri, Jacques Artaud, Gregory Cano, Philippe Moulin. Development of a Measure Cell to Assess by Amperometry Dissolved Oxygen in Vegetable Oils. European Journal of Lipid Science and Technology, 2023, pp.2200120. ⟨10.1002/ejlt.202200120⟩. ⟨hal-04055906⟩
Journal: European Journal of Lipid Science and Technology
Ahmad Ben Fakhri, J. Artaud, Gregory Cano, Philippe Moulin. Development of a Measure Cell to Assess by Amperometry Dissolved Oxygen in Vegetable Oils. European Journal of Lipid Science and Technology, 2023, pp.2200120. ⟨10.1002/ejlt.202200120⟩. ⟨hal-04055906⟩ Plus de détails...
Dissolved oxygen in vegetable oils is an important component of oil degradation over time. Various methods for the determination of dissolved oxygen in oils are proposed in the literature leading to very variable results. An amperometric method associated with a cell of measurement in dynamic mode makes it possible to determine the conditions of stability of the measurements of the relative dissolved oxygen concentration (RDOC, mg L−1) and the electrolysis current intensity (ECI) (nA) in seed oils and virgin olive oils. The effects of oxygenation/deoxygenation time and temperature on RDOC measurements are investigated. For virgin olive oils, the RDOC in bottles closed for eight weeks varies from 0 to 0.9 mg L−1. The nature of the fruitiness and the filtration of the oils have no influence on the RDOC. The monitoring of RDOC and ECI during the flow of virgin olive oil in a column open to air, simulating an industrial tank, shows differences in dissolved oxygen concentration due to a faster flow of oil in the center of the column than at the walls. This result is validated by a similar experiment with nitrogen inerting the column and by a numerical simulation. Practical applications: Knowledge of the oxygen dissolved in vegetable oils is an important factor in limiting the autoxidation phenomenon to increase their shelf life. The development of a cell for measuring the relative dissolved oxygen concentration (RDOC) in vegetable oils and its conditions of use, provides a tool for the RDOC applicable to the different stages of the manufacturing process and during storage or packaging. The RDOC measurement is particularly useful during long storage in tanks whether inerted or not.
Ahmad Ben Fakhri, J. Artaud, Gregory Cano, Philippe Moulin. Development of a Measure Cell to Assess by Amperometry Dissolved Oxygen in Vegetable Oils. European Journal of Lipid Science and Technology, 2023, pp.2200120. ⟨10.1002/ejlt.202200120⟩. ⟨hal-04055906⟩
Journal: European Journal of Lipid Science and Technology
J. Yang, H.D. de Vries, A. Mayeuf-Louchart, J.H. Stroeve, V.W. Bloks, et al.. Role of bile acid receptor FXR in development and function of brown adipose tissue. Biochimica et Biophysica Acta Molecular and Cell Biology of Lipids, 2023, 1868 (2), pp.159257. ⟨10.1016/j.bbalip.2022.159257⟩. ⟨hal-04455246⟩ Plus de détails...
J. Yang, H.D. de Vries, A. Mayeuf-Louchart, J.H. Stroeve, V.W. Bloks, et al.. Role of bile acid receptor FXR in development and function of brown adipose tissue. Biochimica et Biophysica Acta Molecular and Cell Biology of Lipids, 2023, 1868 (2), pp.159257. ⟨10.1016/j.bbalip.2022.159257⟩. ⟨hal-04455246⟩
Journal: Biochimica et Biophysica Acta Molecular and Cell Biology of Lipids
Mathieu Martino, Adil Mouahid, Michelle Sergent, Camille Desgrouas, Catherine Badens, et al.. Supercritical millifluidic process for siRNA encapsulation in nanoliposomes for potential Progeria treatment (ex-vivo assays). Journal of Drug Delivery Science and Technology, 2023, 87, ⟨10.1016/j.jddst.2023.104804⟩. ⟨hal-04254108⟩ Plus de détails...
A millifluidic process working in continuous mode for the preparation of nanoliposomes using supercritical CO2 has been developed. Nanoliposomes with an average diameter ranging between 123.9 ± 3.0 and 165.7 ± 1.6 nm depending on the operating conditions were obtained. The effects of pressure (90–150 bar), temperature (35–45 °C) and phospholipid mass ratio (0.1–1.9 wt%) in feed solution on liposome sizes were investigated. The concentration of phospholipids was found to be the most significant parameter for controlling the mean diameter of nanoliposomes while pressure and temperature had a minor influence on liposomes’ properties. The encapsulation of siRNAs targeting the LMNA gene by nanoliposomes obtained with the millifluidic process was achieved at optimized operating conditions (150 bar, 35 °C and a phospholipid mass ratio in the feed solution of 0.1 wt%). The resulting formulations were compared with commercial transfection agents in ex vivo assays. These assays showed a decrease in the expression of the encoded protein lamin A for the formulations obtained with the process developed in this work. Therefore, the use of siRNAs targeting LMNA, encapsulated by nanoliposomes represents a potential new therapeutic approach for the treatment of progeria.
Mathieu Martino, Adil Mouahid, Michelle Sergent, Camille Desgrouas, Catherine Badens, et al.. Supercritical millifluidic process for siRNA encapsulation in nanoliposomes for potential Progeria treatment (ex-vivo assays). Journal of Drug Delivery Science and Technology, 2023, 87, ⟨10.1016/j.jddst.2023.104804⟩. ⟨hal-04254108⟩
Journal: Journal of Drug Delivery Science and Technology
Adil Mouahid, Magalie Claeys-Bruno, Isabelle Bombarda, Sandrine Amat, Andrea Ciavarella, et al.. Valorization of handmade argan press cake by supercritical CO2 extraction. Food and Bioproducts Processing, 2023, 137, pp.168-176. ⟨10.1016/j.fbp.2022.11.011⟩. ⟨hal-04063823⟩ Plus de détails...
The capability of supercritical CO2 to extract edible oil from handmade Argan press cake was investigated. The aim is to enable Moroccan cooperatives to improve their economic situation by valuing the handmade argan press cake, which is nowadays considered as a waste, applying a clean extraction process. Extraction experiments were conducted at 300 and 400 bar, 333 K and 0.14 kg/h on dried biomass. The fatty acids and tocopherols compositions of the extracted oil were found similar to previous studies and correspond to a commercial edible oil. The air flow dried biomass exhibits a higher extraction yield compared to the freeze-dried biomass. A pressure of 300 bar seems to be suffcient to allow the extraction of oil with a satisfactory extraction kinetic.
Adil Mouahid, Magalie Claeys-Bruno, Isabelle Bombarda, Sandrine Amat, Andrea Ciavarella, et al.. Valorization of handmade argan press cake by supercritical CO2 extraction. Food and Bioproducts Processing, 2023, 137, pp.168-176. ⟨10.1016/j.fbp.2022.11.011⟩. ⟨hal-04063823⟩
Adil Mouahid, Magalie Claeys-Bruno, Isabelle Bombarda, Sandrine Amat, Andrea Ciavarella, et al.. Valorization of handmade argan press cake by supercritical CO2 extraction. Food and Bioproducts Processing, 2023, 137, pp.168-176. ⟨10.1016/j.fbp.2022.11.011⟩. ⟨hal-03992094⟩ Plus de détails...
The capability of supercritical CO2 to extract edible oil from handmade Argan press cake was investigated. The aim is to enable Moroccan cooperatives to improve their economic situation by valuing the handmade argan press cake, which is nowadays considered as a waste, applying a clean extraction process. Extraction experiments were conducted at 300 and 400 bar, 333 K and 0.14 kg/h on dried biomass. The fatty acids and tocopherols compositions of the extracted oil were found similar to previous studies and correspond to a commercial edible oil. The air flow dried biomass exhibits a higher extraction yield compared to the freeze-dried biomass. A pressure of 300 bar seems to be suffcient to allow the extraction of oil with a satisfactory extraction kinetic.
Adil Mouahid, Magalie Claeys-Bruno, Isabelle Bombarda, Sandrine Amat, Andrea Ciavarella, et al.. Valorization of handmade argan press cake by supercritical CO2 extraction. Food and Bioproducts Processing, 2023, 137, pp.168-176. ⟨10.1016/j.fbp.2022.11.011⟩. ⟨hal-03992094⟩
Mathieu Martino, Adil Mouahid, Michelle Sergent, Camille Desgrouas, Catherine Badens, et al.. Supercritical millifluidic process for siRNA encapsulation in nanoliposomes for potential Progeria treatment (ex-vivo assays). Journal of Drug Delivery Science and Technology, 2023, 87, ⟨10.1016/j.jddst.2023.104804⟩. ⟨hal-04254108⟩ Plus de détails...
Mathieu Martino, Adil Mouahid, Michelle Sergent, Camille Desgrouas, Catherine Badens, et al.. Supercritical millifluidic process for siRNA encapsulation in nanoliposomes for potential Progeria treatment (ex-vivo assays). Journal of Drug Delivery Science and Technology, 2023, 87, ⟨10.1016/j.jddst.2023.104804⟩. ⟨hal-04254108⟩
Journal: Journal of Drug Delivery Science and Technology
H. Klinklin, Sabrina Marcelin, Benoît Ter-Ovanessian, M. Monnot, Bernard Normand. Potential of a Thin-Film Cell for assessing the Sensitivity of Nickel-Base Alloys to Crevice Corrosion. Journal of The Electrochemical Society, 2023, 170, ⟨10.1149/1945-7111/acecaa⟩. ⟨hal-04194575⟩ Plus de détails...
H. Klinklin, Sabrina Marcelin, Benoît Ter-Ovanessian, M. Monnot, Bernard Normand. Potential of a Thin-Film Cell for assessing the Sensitivity of Nickel-Base Alloys to Crevice Corrosion. Journal of The Electrochemical Society, 2023, 170, ⟨10.1149/1945-7111/acecaa⟩. ⟨hal-04194575⟩
Grégory Cano, Philippe Moulin. Treatment of Boiler Condensate by Ultrafiltration for Reuse. Membranes, 2022, 12 (12), pp.1285. ⟨10.3390/membranes12121285⟩. ⟨hal-03967074⟩ Plus de détails...
The generation of water vapor is crucial for the petrochemical industry. In order to protect the boiler from damage, the re-injected water must not contain any suspended matter, especially hydrocarbons. Moreover, it is condensed steam with a temperature close to 100 °C and the unintentional creation or chronic generation of pollution, respectively, that can more or less produce the concentrated pollution. In this context, membrane processes appear promising in order to achieve this reuse and more especially crossflow ceramic membranes. The novelty of this paper is to study the retention of hydrocarbons and suspended solids contained in the condensate hot water of a high-capacity boiler using ceramic ultrafiltration membranes. In total, two ultrafiltration molecular weight cut-offs were used: 50–150 kDa. Several operating parameters were studied such as effluent type (accidental or chronic pollution), temperature, transmembrane pressure, initial volume, and pilot plant size. In all cases, retention of suspended matter was above 90% and residual hydrocarbon concentrations were under 0.1 ppm even for high-volume concentrations. Control of the transmembrane pressure and the molecular weight cut-off of the membrane are key to optimizing the process. Despite the high-volume concentration obtained, the membranes were perfectly regenerated with conventional cleaning procedures.
Grégory Cano, Philippe Moulin. Treatment of Boiler Condensate by Ultrafiltration for Reuse. Membranes, 2022, 12 (12), pp.1285. ⟨10.3390/membranes12121285⟩. ⟨hal-03967074⟩
Grégory Cano, Philippe Moulin. Treatment of Boiler Condensate by Ultrafiltration for Reuse. Membranes, 2022, 12 (12), pp.1285. ⟨10.3390/membranes12121285⟩. ⟨hal-03967074⟩ Plus de détails...
The generation of water vapor is crucial for the petrochemical industry. In order to protect the boiler from damage, the re-injected water must not contain any suspended matter, especially hydrocarbons. Moreover, it is condensed steam with a temperature close to 100 °C and the unintentional creation or chronic generation of pollution, respectively, that can more or less produce the concentrated pollution. In this context, membrane processes appear promising in order to achieve this reuse and more especially crossflow ceramic membranes. The novelty of this paper is to study the retention of hydrocarbons and suspended solids contained in the condensate hot water of a high-capacity boiler using ceramic ultrafiltration membranes. In total, two ultrafiltration molecular weight cut-offs were used: 50–150 kDa. Several operating parameters were studied such as effluent type (accidental or chronic pollution), temperature, transmembrane pressure, initial volume, and pilot plant size. In all cases, retention of suspended matter was above 90% and residual hydrocarbon concentrations were under 0.1 ppm even for high-volume concentrations. Control of the transmembrane pressure and the molecular weight cut-off of the membrane are key to optimizing the process. Despite the high-volume concentration obtained, the membranes were perfectly regenerated with conventional cleaning procedures.
Grégory Cano, Philippe Moulin. Treatment of Boiler Condensate by Ultrafiltration for Reuse. Membranes, 2022, 12 (12), pp.1285. ⟨10.3390/membranes12121285⟩. ⟨hal-03967074⟩
Mathieu Martino, Hugo Taligrot, Clémence Cordier, Philippe Moulin. Supercritical fluid treatment of organic membranes. Journal of Membrane Science, 2022, 661, pp.120892. ⟨10.1016/j.memsci.2022.120892⟩. ⟨hal-04063877⟩ Plus de détails...
Membrane processes are used for drinking water production and medical applications to remove and/or produce viruses using organic membranes. It appears that backwashing is not sufficient to remove all the viruses stopped by the membrane. The use of "one-shot" membranes or chlorinated solution filtration can be considered with an additional cost and accelerated aging of the membranes respectively. The inactivation of bacteria, spores and/or viruses has been demonstrated by the use of supercritical fluid. The use of a supercritical CO 2 treatment of organic membranes is studied with the aim to investigate the impact of this treatment on the membrane performances and on virus destruction. It is demonstrated that whatever the operating conditions, the membrane materials and the application modes, the permeability and the retention of the membrane are not impacted. TEM observation of the viruses after treatment shows no virus integrity.
Mathieu Martino, Hugo Taligrot, Clémence Cordier, Philippe Moulin. Supercritical fluid treatment of organic membranes. Journal of Membrane Science, 2022, 661, pp.120892. ⟨10.1016/j.memsci.2022.120892⟩. ⟨hal-04063877⟩
Mathieu Martino, Hugo Taligrot, Clémence Cordier, Philippe Moulin. Supercritical fluid treatment of organic membranes. Journal of Membrane Science, 2022, 661, pp.120892. ⟨10.1016/j.memsci.2022.120892⟩. ⟨hal-03967095⟩ Plus de détails...
Maryse Drouin, Giulia Parravicini, Samy Nasser, Philippe Moulin. Membrane Separation Used as Treatment of Alkaline Wastewater from a Maritime Scrubber Unit. Membranes, 2022, 12 (10), pp.968. ⟨10.3390/membranes12100968⟩. ⟨hal-03967086⟩ Plus de détails...
Since 1 January 2020, the sulfur content allowed in exhaust gas plume generated by marine vessels decreased to 0.5% m/m. To be compliant, a hybrid scrubber was installed on-board, working in closed loop and generating a high volume of alkaline wastewater. The alkaline water suspension was treated by a silicon carbide multitubular membrane to remove pollutants, and to allow the water discharge into the natural environment. In this paper, membrane filtration behavior was analyzed for the maritime scrubber wastewater. A range of operating parameters were obtained for several feedwater quality-respecting industrial constraints. The objective was an improvement of (I) the water recovery rate, (II) the filtration duration, and (III) the permeate quality. Thus, in high-fouling water, a low permeate flow (60 L h−1 m−2) with frequent backflushing (every 20 min) was used to maintain membrane performance over time. In terms of water quality, the suspended solids and heavy metals were retained at more than 99% and 90%, respectively. Other seawater discharge criteria in terms of suspended solids concentration, pH, and polyaromatic hydrocarbons were validated. The recommended operating conditions from laboratory study at semi-industrial scale were then implemented on a vessel in real navigation conditions with results in agreement with expectations.
Maryse Drouin, Giulia Parravicini, Samy Nasser, Philippe Moulin. Membrane Separation Used as Treatment of Alkaline Wastewater from a Maritime Scrubber Unit. Membranes, 2022, 12 (10), pp.968. ⟨10.3390/membranes12100968⟩. ⟨hal-03967086⟩
Maryse Drouin, Giulia Parravicini, Samy Nasser, Philippe Moulin. Membrane Separation Used as Treatment of Alkaline Wastewater from a Maritime Scrubber Unit. Membranes, 2022, 12 (10), pp.968. ⟨10.3390/membranes12100968⟩. ⟨hal-03967086⟩ Plus de détails...
Since 1 January 2020, the sulfur content allowed in exhaust gas plume generated by marine vessels decreased to 0.5% m/m. To be compliant, a hybrid scrubber was installed on-board, working in closed loop and generating a high volume of alkaline wastewater. The alkaline water suspension was treated by a silicon carbide multitubular membrane to remove pollutants, and to allow the water discharge into the natural environment. In this paper, membrane filtration behavior was analyzed for the maritime scrubber wastewater. A range of operating parameters were obtained for several feedwater quality-respecting industrial constraints. The objective was an improvement of (I) the water recovery rate, (II) the filtration duration, and (III) the permeate quality. Thus, in high-fouling water, a low permeate flow (60 L h−1 m−2) with frequent backflushing (every 20 min) was used to maintain membrane performance over time. In terms of water quality, the suspended solids and heavy metals were retained at more than 99% and 90%, respectively. Other seawater discharge criteria in terms of suspended solids concentration, pH, and polyaromatic hydrocarbons were validated. The recommended operating conditions from laboratory study at semi-industrial scale were then implemented on a vessel in real navigation conditions with results in agreement with expectations.
Maryse Drouin, Giulia Parravicini, Samy Nasser, Philippe Moulin. Membrane Separation Used as Treatment of Alkaline Wastewater from a Maritime Scrubber Unit. Membranes, 2022, 12 (10), pp.968. ⟨10.3390/membranes12100968⟩. ⟨hal-03967086⟩
Mathilda Trevisan, Jérôme Vicente, Rémy Ghidossi, Adrien Vincent, Philippe Moulin. Membrane characterisation from the support to the skin layer: Application to silicon carbide (SiC) membranes. Journal of the European Ceramic Society, 2022, 42 (9), pp.3759-3769. ⟨10.1016/j.jeurceramsoc.2022.02.045⟩. ⟨hal-04063878⟩ Plus de détails...
SiC membranes are used in many industrial fields with high performances and good retention efficiency in the filtration of loaded liquids such as wastewater, oil or wine. Technologies allow to characterise membrane’s surface but few allow the characterisation of its depth. This paper proposes the combination of results obtained by the usual techniques of porous materials and by 3D X-ray tomography characterisation. A morphological analysis of solid and porous phase is carried out on the total thickness of the membrane. Combination of results on all layers is relevant for the study of SiC membranes, showing not only the SiC surface properties but also the 3D description of the porous material (i.e. support, layer and skin). The definition of essential parameters to define the efficiency of a filtration such as hydrophobicity, porosity and tortuosity allows to justify the use and superior performance of SiC membranes for the filtration of loaded liquids.
Mathilda Trevisan, Jérôme Vicente, Rémy Ghidossi, Adrien Vincent, Philippe Moulin. Membrane characterisation from the support to the skin layer: Application to silicon carbide (SiC) membranes. Journal of the European Ceramic Society, 2022, 42 (9), pp.3759-3769. ⟨10.1016/j.jeurceramsoc.2022.02.045⟩. ⟨hal-04063878⟩
Mathilda Trevisan, Jérôme Vicente, Rémy Ghidossi, Adrien Vincent, Philippe Moulin. Membrane characterisation from the support to the skin layer: Application to silicon carbide (SiC) membranes. Journal of the European Ceramic Society, 2022, 42 (9), pp.3759-3769. ⟨10.1016/j.jeurceramsoc.2022.02.045⟩. ⟨hal-03967172⟩ Plus de détails...
SiC membranes are used in many industrial fields with high performances and good retention efficiency in the filtration of loaded liquids such as wastewater, oil or wine. Technologies allow to characterise membrane’s surface but few allow the characterisation of its depth. This paper proposes the combination of results obtained by the usual techniques of porous materials and by 3D X-ray tomography characterisation. A morphological analysis of solid and porous phase is carried out on the total thickness of the membrane. Combination of results on all layers is relevant for the study of SiC membranes, showing not only the SiC surface properties but also the 3D description of the porous material (i.e. support, layer and skin). The definition of essential parameters to define the efficiency of a filtration such as hydrophobicity, porosity and tortuosity allows to justify the use and superior performance of SiC membranes for the filtration of loaded liquids.
Mathilda Trevisan, Jérôme Vicente, Rémy Ghidossi, Adrien Vincent, Philippe Moulin. Membrane characterisation from the support to the skin layer: Application to silicon carbide (SiC) membranes. Journal of the European Ceramic Society, 2022, 42 (9), pp.3759-3769. ⟨10.1016/j.jeurceramsoc.2022.02.045⟩. ⟨hal-03967172⟩
Emilie Gout, Mathias Monnot, Olivier Boutin, Pierre Vanloot, Magalie Claeys-Bruno, et al.. Assessment and optimization of wet air oxidation for treatment of landfill leachate concentrated with reverse osmosis. Process Safety and Environmental Protection, 2022, 162, pp.765-774. ⟨10.1016/j.psep.2022.04.046⟩. ⟨hal-04063869⟩ Plus de détails...
Sanitary landfilling is one of the most common ways to eliminate solid municipal/urban wastes. Despite many advantages, this method leads to the generation of contaminated leachates that remains an unavoidable consequence of the waste disposal. Membrane technologies, such as reverse osmosis, are frequently used for leachate treatment as they generate good quality permeate with a high recovery rate. However, their primary drawbacks are fouling, eliminated by chemical wash, and the production of highly polluted concentrates. This paper aims to assess and optimize the use of wet air oxidation to treat reverse osmosis concentrates in terms of bio-refractory organic pollutants removal. Wet air oxidation was performed at elevated pressure and temperature using experimental design methodology with a 70% oxygen excess for 6 h in a stirred batch reactor. The effect of operating conditions was investigated with an experimental design where 3 factors (two quantitative ones: pressure and temperature and a qualitative one: seasonality of the effluent) have been considered. The chemical oxygen demand and the total organic carbon removals increased with the increase of temperature (from 200 °C to 300 °C) and no effect of the pressure was observed within the range 18-21 MPa. Wet air oxidation could achieve up to 99% removals for chemical oxygen demand and total organic carbon for the seasonality of October. Experiments also showed that increasing the initial pollutant concentration increased initial kinetic rates. Finally, models were established to calculate and predict pollution removal rate and its kinetic, in the domain of study.
Emilie Gout, Mathias Monnot, Olivier Boutin, Pierre Vanloot, Magalie Claeys-Bruno, et al.. Assessment and optimization of wet air oxidation for treatment of landfill leachate concentrated with reverse osmosis. Process Safety and Environmental Protection, 2022, 162, pp.765-774. ⟨10.1016/j.psep.2022.04.046⟩. ⟨hal-04063869⟩
Journal: Process Safety and Environmental Protection
H. Taligrot, M. Monnot, J. Ollivier, C. Cordier, N. Jacquet, et al.. Retention of the Tulane virus, a norovirus surrogate, by ultrafiltration in seawater and production systems. Aquaculture, 2022, 553, pp.738096. ⟨10.1016/j.aquaculture.2022.738096⟩. ⟨hal-04063881⟩ Plus de détails...
Shellfish as a foodstuff must meet sanitary quality objectives for the protection of consumers and this quality is closely linked to the water. The oyster industry considered this challenge related to contaminations and currently, the major risk of disease is due to the presence of norovirus (NoV) since all oyster-consuming countries report outbreaks of gastroenteritis linked to the presence of this microorganism. Ultrafiltration has already demonstrated to be efficient for viral protection of oyster farms in previous studies. In this work, retention by ultrafiltration of Tulane virus, a NoV surrogate, was evaluated. The effect of virus concentration in the feed on the ultrafiltration efficiency has been assessed. Low retentions of about 1 log were observed at the lowest viral concentrations. At higher concentrations, an increase of retention up to 5 log was obtained. These results highlight the potential overestimation of UF efficiency during laboratory experiments realized at high concentrations, compared to low concentrations found in environmental resources. In agreement with other studies, higher retentions at high concentrations could be explained by formation of viral aggregates, which could facilitate the steric exclusion but also modify the electrostatic and hydrophobic interactions between isolated viruses/aggregates and membrane. Virus retentions with a fresh mineral water (Evian water) and seawater were compared. Seawater achieved higher retention rates for Tulane virus due to the membrane fouling.
H. Taligrot, M. Monnot, J. Ollivier, C. Cordier, N. Jacquet, et al.. Retention of the Tulane virus, a norovirus surrogate, by ultrafiltration in seawater and production systems. Aquaculture, 2022, 553, pp.738096. ⟨10.1016/j.aquaculture.2022.738096⟩. ⟨hal-04063881⟩
H. Taligrot, M. Monnot, J. Ollivier, C. Cordier, N. Jacquet, et al.. Retention of the Tulane virus, a norovirus surrogate, by ultrafiltration in seawater and production systems. Aquaculture, 2022, 553, pp.738096. ⟨10.1016/j.aquaculture.2022.738096⟩. ⟨hal-03967224⟩ Plus de détails...
Shellfish as a foodstuff must meet sanitary quality objectives for the protection of consumers and this quality is closely linked to the water. The oyster industry considered this challenge related to contaminations and currently, the major risk of disease is due to the presence of norovirus (NoV) since all oyster-consuming countries report outbreaks of gastroenteritis linked to the presence of this microorganism. Ultrafiltration has already demonstrated to be efficient for viral protection of oyster farms in previous studies. In this work, retention by ultrafiltration of Tulane virus, a NoV surrogate, was evaluated. The effect of virus concentration in the feed on the ultrafiltration efficiency has been assessed. Low retentions of about 1 log were observed at the lowest viral concentrations. At higher concentrations, an increase of retention up to 5 log was obtained. These results highlight the potential overestimation of UF efficiency during laboratory experiments realized at high concentrations, compared to low concentrations found in environmental resources. In agreement with other studies, higher retentions at high concentrations could be explained by formation of viral aggregates, which could facilitate the steric exclusion but also modify the electrostatic and hydrophobic interactions between isolated viruses/aggregates and membrane. Virus retentions with a fresh mineral water (Evian water) and seawater were compared. Seawater achieved higher retention rates for Tulane virus due to the membrane fouling.
H. Taligrot, M. Monnot, J. Ollivier, C. Cordier, N. Jacquet, et al.. Retention of the Tulane virus, a norovirus surrogate, by ultrafiltration in seawater and production systems. Aquaculture, 2022, 553, pp.738096. ⟨10.1016/j.aquaculture.2022.738096⟩. ⟨hal-03967224⟩
M. Trevisan, R. Ghidossi, P. Moulin. Silicon carbide (SiC) membranes in œnology. Separation and Purification Technology, 2022, 284, pp.120276. ⟨10.1016/j.seppur.2021.120276⟩. ⟨hal-04063884⟩ Plus de détails...
In a winery, clarification and stabilization steps by crossflow microfiltration are limited by fouling phenomenon which reduces production flows and can alter the aromatic potential of wines, forcing professionals to use several successive filtration steps. The objectives of this industrial-scale study are to (i) introduce SiC membranes at different vinification steps (ii) evaluate the hydraulic and retention performances of SiC membranes and (iii) carry out a comparative study between SiC membranes and polymeric hollow fibers commonly used in the wine industry. It appears that SiC membranes are able to filter diverse matrices with very satisfactory production flow and retention efficiency. This particular process was optimized by developing an efficient regeneration protocol. The clarification and stabilization of the matrices by SiC membranes allowed (i) the production of clear and brilliant wines, (ii) the retention of wine microorganisms, (iii) higher production flows than hollow fibers, while conserving wines interest compounds, (iv) and the filtration of matrices that cannot be processed by hollow fibers.
M. Trevisan, R. Ghidossi, P. Moulin. Silicon carbide (SiC) membranes in œnology. Separation and Purification Technology, 2022, 284, pp.120276. ⟨10.1016/j.seppur.2021.120276⟩. ⟨hal-04063884⟩
M. Trevisan, R. Ghidossi, P. Moulin. Silicon carbide (SiC) membranes in œnology. Separation and Purification Technology, 2022, 284, pp.120276. ⟨10.1016/j.seppur.2021.120276⟩. ⟨hal-03967245⟩ Plus de détails...
In a winery, clarification and stabilization steps by crossflow microfiltration are limited by fouling phenomenon which reduces production flows and can alter the aromatic potential of wines, forcing professionals to use several successive filtration steps. The objectives of this industrial-scale study are to (i) introduce SiC membranes at different vinification steps (ii) evaluate the hydraulic and retention performances of SiC membranes and (iii) carry out a comparative study between SiC membranes and polymeric hollow fibers commonly used in the wine industry. It appears that SiC membranes are able to filter diverse matrices with very satisfactory production flow and retention efficiency. This particular process was optimized by developing an efficient regeneration protocol. The clarification and stabilization of the matrices by SiC membranes allowed (i) the production of clear and brilliant wines, (ii) the retention of wine microorganisms, (iii) higher production flows than hollow fibers, while conserving wines interest compounds, (iv) and the filtration of matrices that cannot be processed by hollow fibers.
M. Trevisan, R. Ghidossi, P. Moulin. Silicon carbide (SiC) membranes in œnology. Separation and Purification Technology, 2022, 284, pp.120276. ⟨10.1016/j.seppur.2021.120276⟩. ⟨hal-03967245⟩
Grégory Cano, Philippe Moulin. Treatment of Boiler Condensate by Ultrafiltration for Reuse. Membranes, 2022, 12 (12), pp.1285. ⟨10.3390/membranes12121285⟩. ⟨hal-04063872⟩ Plus de détails...
The generation of water vapor is crucial for the petrochemical industry. In order to protect the boiler from damage, the re-injected water must not contain any suspended matter, especially hydrocarbons. Moreover, it is condensed steam with a temperature close to 100 °C and the unintentional creation or chronic generation of pollution, respectively, that can more or less produce the concentrated pollution. In this context, membrane processes appear promising in order to achieve this reuse and more especially crossflow ceramic membranes. The novelty of this paper is to study the retention of hydrocarbons and suspended solids contained in the condensate hot water of a high-capacity boiler using ceramic ultrafiltration membranes. In total, two ultrafiltration molecular weight cut-offs were used: 50–150 kDa. Several operating parameters were studied such as effluent type (accidental or chronic pollution), temperature, transmembrane pressure, initial volume, and pilot plant size. In all cases, retention of suspended matter was above 90% and residual hydrocarbon concentrations were under 0.1 ppm even for high-volume concentrations. Control of the transmembrane pressure and the molecular weight cut-off of the membrane are key to optimizing the process. Despite the high-volume concentration obtained, the membranes were perfectly regenerated with conventional cleaning procedures.
Grégory Cano, Philippe Moulin. Treatment of Boiler Condensate by Ultrafiltration for Reuse. Membranes, 2022, 12 (12), pp.1285. ⟨10.3390/membranes12121285⟩. ⟨hal-04063872⟩
T. Eljaddi, S. Ragueneau, C. Cordier, A. Lange, M. Rabiller, et al.. Ultrafiltration to secure shellfish industrial activities: Culture of microalgae and oyster fertilization. Aquacultural Engineering, 2021, 95, pp.102204. ⟨10.1016/j.aquaeng.2021.102204⟩. ⟨hal-03597226⟩ Plus de détails...
Shellfish farming, a key sector of French aquaculture activity, allows the production of oyster spat in a controlled environment. Their production in commercial hatcheries requires control over the quality of the seawater used to sustain crossbreeding, breeding, and the production of fodder microalgae. Therefore, improving the filtration conditions of incoming water is crucial in ensuring the sustainability of production. An ultrafiltration pilot plant was therefore installed at Vendee Naissain. This ultrafiltration pilot plant allows filtration at 0.02 mu m; it is used upstream of hatcheries to eliminate pathogens and parasites that can influence the development of cultivated species and downstream to remove oyster gametes in hatchery effluents. The objectives of this work were: (i) to use ultrafiltered seawater for the culture of the microalga Isochrysis lutea (T-Iso) to determine whether better growth than that observed with borehole water, historically used by the producer, can be achieved; and (ii) to determine whether the use of ultrafiltered water results in better fertilization rates of the cupped oyster Crassostrea gigas compared to filtered and UV-treated seawater. Ultrafiltered water has shown definite efficiency for culturing T-Iso with rapid growth and significant reduction in contamination compared to cultivation in well water. The contribution of ultrafiltered water in hatching is more nuanced; ultrafiltered water does not stabilize hatch rates, and its quality is highly dependent on the quality of the seawater used.
T. Eljaddi, S. Ragueneau, C. Cordier, A. Lange, M. Rabiller, et al.. Ultrafiltration to secure shellfish industrial activities: Culture of microalgae and oyster fertilization. Aquacultural Engineering, 2021, 95, pp.102204. ⟨10.1016/j.aquaeng.2021.102204⟩. ⟨hal-03597226⟩
T. Eljaddi, S. Ragueneau, C. Cordier, A. Lange, M. Rabiller, et al.. Ultrafiltration to secure shellfish industrial activities: Culture of microalgae and oyster fertilization. Aquacultural Engineering, 2021, 95, pp.102204. ⟨10.1016/j.aquaeng.2021.102204⟩. ⟨hal-03514653⟩ Plus de détails...
Shellfish farming, a key sector of French aquaculture activity, allows the production of oyster spat in a controlled environment. Their production in commercial hatcheries requires control over the quality of the seawater used to sustain crossbreeding, breeding, and the production of fodder microalgae. Therefore, improving the filtration conditions of incoming water is crucial in ensuring the sustainability of production. An ultrafiltration pilot plant was therefore installed at Vendee Naissain. This ultrafiltration pilot plant allows filtration at 0.02 mu m; it is used upstream of hatcheries to eliminate pathogens and parasites that can influence the development of cultivated species and downstream to remove oyster gametes in hatchery effluents. The objectives of this work were: (i) to use ultrafiltered seawater for the culture of the microalga Isochrysis lutea (T-Iso) to determine whether better growth than that observed with borehole water, historically used by the producer, can be achieved; and (ii) to determine whether the use of ultrafiltered water results in better fertilization rates of the cupped oyster Crassostrea gigas compared to filtered and UV-treated seawater. Ultrafiltered water has shown definite efficiency for culturing T-Iso with rapid growth and significant reduction in contamination compared to cultivation in well water. The contribution of ultrafiltered water in hatching is more nuanced; ultrafiltered water does not stabilize hatch rates, and its quality is highly dependent on the quality of the seawater used.
T. Eljaddi, S. Ragueneau, C. Cordier, A. Lange, M. Rabiller, et al.. Ultrafiltration to secure shellfish industrial activities: Culture of microalgae and oyster fertilization. Aquacultural Engineering, 2021, 95, pp.102204. ⟨10.1016/j.aquaeng.2021.102204⟩. ⟨hal-03514653⟩
Jiaqi Yang, Mathias Monnot, Lionel Ercolei, Philippe Moulin. Impact of Chlorinated-Assisted Backwash and Air Backwash on Ultrafiltration Fouling Management for Urban Wastewater Tertiary Treatment. Membranes, 2021, 11 (10), pp.733. ⟨10.3390/membranes11100733⟩. ⟨hal-03514663⟩ Plus de détails...
To improve membrane fouling management, the NaClO-assisted backwash has been developed to improve permeability maintenance and reduce the need for intensive chemical cleanings. This study is aimed to focus on the efficiency of NaClO-assisted backwash in real UF pilot scale and with periodic classic backwash (CB) and air backwash (AB). The impacts on hydraulic filtration performance, physicochemical properties of membrane material under different addition frequencies of NaClO, and the performance of chlorinated CB and AB will be discussed. In result, 10 mg Cl2 L−1 NaClO addition in backwash water is confirmed to greatly improve the overall filtration performance and backwash cleaning efficiency. One condition stands out from the other due to better control of irreversible fouling, less NaClO consumption in 10 years prediction, sustainable and adaptable filtration performance, and less potential damage on the physicochemical properties of the membrane. Additionally, it can be inferred from this experiment that frequent contact with NaClO induced some degradation on the PES-made UF membrane surface properties. To retain the best state of UF membrane on anti-fouling and qualified production, the optimized condition with more frequent NaClO contact was not suggested for long-term filtration.
Jiaqi Yang, Mathias Monnot, Lionel Ercolei, Philippe Moulin. Impact of Chlorinated-Assisted Backwash and Air Backwash on Ultrafiltration Fouling Management for Urban Wastewater Tertiary Treatment. Membranes, 2021, 11 (10), pp.733. ⟨10.3390/membranes11100733⟩. ⟨hal-03514663⟩
Jiaqi Yang, Mathias Monnot, Lionel Ercolei, Philippe Moulin. Impact of Chlorinated-Assisted Backwash and Air Backwash on Ultrafiltration Fouling Management for Urban Wastewater Tertiary Treatment. Membranes, 2021, 11 (10), pp.733. ⟨10.3390/membranes11100733⟩. ⟨hal-03514663⟩ Plus de détails...
To improve membrane fouling management, the NaClO-assisted backwash has been developed to improve permeability maintenance and reduce the need for intensive chemical cleanings. This study is aimed to focus on the efficiency of NaClO-assisted backwash in real UF pilot scale and with periodic classic backwash (CB) and air backwash (AB). The impacts on hydraulic filtration performance, physicochemical properties of membrane material under different addition frequencies of NaClO, and the performance of chlorinated CB and AB will be discussed. In result, 10 mg Cl2 L−1 NaClO addition in backwash water is confirmed to greatly improve the overall filtration performance and backwash cleaning efficiency. One condition stands out from the other due to better control of irreversible fouling, less NaClO consumption in 10 years prediction, sustainable and adaptable filtration performance, and less potential damage on the physicochemical properties of the membrane. Additionally, it can be inferred from this experiment that frequent contact with NaClO induced some degradation on the PES-made UF membrane surface properties. To retain the best state of UF membrane on anti-fouling and qualified production, the optimized condition with more frequent NaClO contact was not suggested for long-term filtration.
Jiaqi Yang, Mathias Monnot, Lionel Ercolei, Philippe Moulin. Impact of Chlorinated-Assisted Backwash and Air Backwash on Ultrafiltration Fouling Management for Urban Wastewater Tertiary Treatment. Membranes, 2021, 11 (10), pp.733. ⟨10.3390/membranes11100733⟩. ⟨hal-03514663⟩
J. Yang, Mathias Monnot, T. Eljaddi, L. Ercolei, L. Simonian, et al.. Ultrafiltration as tertiary treatment for municipal wastewater reuse. Separation and Purification Technology, 2021, 272, pp.118921. ⟨10.1016/j.seppur.2021.118921⟩. ⟨hal-03514681⟩ Plus de détails...
Water reuse is an enduring topic that benefits the society and future generations of mankind. Ultrafiltration (UF) is one of the most cost-effective treatment technologies for improving water quality. In this study, a semiindustrial UF pilot plant with periodical classic backwash (CB) and air backwash (AB) was operated automatically to evaluate its feasibility and sustainability for municipal wastewater reuse and find out the optimized filtration condition. This study carried out 15 filtration conditions to investigate the impacts of flux (J in L center dot h-1 center dot m- 2), filtration cycle time (t in min), and air backwash frequency (BW) on membrane hydraulic filtration performance and membrane fouling management. Through comparative analysis of all conditions in water quality, permeability variation, irreversible fouling management, and water recovery rates, the sustainable conditions J80t40BW1/3 (flux of 80 L center dot h- 1 center dot m- 2, filtration cycle time of 40 min, 1 AB followed with 3 CBs), J60t60BW1/4 (flux of 60 L center dot h- 1 center dot m- 2, filtration cycle time of 60 min, 1 AB followed with 4 CBs), and J60t60BW1/ 3 (flux of 60 L center dot h- 1 center dot m- 2, filtration cycle time of 60 min, 1 AB followed with 3 CBs), stood out from the others with higher overall performances. Additionally, air backwash showed excellent reversibility on membrane fouling control, which was around 1.25-2 times that of CB in average. After all, long term operation on condition J60t60BW1/3 in winter and in summer confirmed that the UF system could provide sustainable and adaptable filtration performance regardless of the temperature and feed water quality. The UF permeate quality is good enough to be reused in non-potable applications as it met reuse guidelines of the World Health Organization, reuse standards of France and the most recent EU regulation for agricultural irrigation. This work confirms the great interest of UF as tertiary treatment for water reuse and gives operational indications for future industrialscale production of reclaimed water.
J. Yang, Mathias Monnot, T. Eljaddi, L. Ercolei, L. Simonian, et al.. Ultrafiltration as tertiary treatment for municipal wastewater reuse. Separation and Purification Technology, 2021, 272, pp.118921. ⟨10.1016/j.seppur.2021.118921⟩. ⟨hal-03514681⟩
J. Yang, Mathias Monnot, T. Eljaddi, L. Ercolei, L. Simonian, et al.. Ultrafiltration as tertiary treatment for municipal wastewater reuse. Separation and Purification Technology, 2021, 272, pp.118921. ⟨10.1016/j.seppur.2021.118921⟩. ⟨hal-03597706⟩ Plus de détails...
Water reuse is an enduring topic that benefits the society and future generations of mankind. Ultrafiltration (UF) is one of the most cost-effective treatment technologies for improving water quality. In this study, a semiindustrial UF pilot plant with periodical classic backwash (CB) and air backwash (AB) was operated automatically to evaluate its feasibility and sustainability for municipal wastewater reuse and find out the optimized filtration condition. This study carried out 15 filtration conditions to investigate the impacts of flux (J in L center dot h-1 center dot m- 2), filtration cycle time (t in min), and air backwash frequency (BW) on membrane hydraulic filtration performance and membrane fouling management. Through comparative analysis of all conditions in water quality, permeability variation, irreversible fouling management, and water recovery rates, the sustainable conditions J80t40BW1/3 (flux of 80 L center dot h- 1 center dot m- 2, filtration cycle time of 40 min, 1 AB followed with 3 CBs), J60t60BW1/4 (flux of 60 L center dot h- 1 center dot m- 2, filtration cycle time of 60 min, 1 AB followed with 4 CBs), and J60t60BW1/ 3 (flux of 60 L center dot h- 1 center dot m- 2, filtration cycle time of 60 min, 1 AB followed with 3 CBs), stood out from the others with higher overall performances. Additionally, air backwash showed excellent reversibility on membrane fouling control, which was around 1.25-2 times that of CB in average. After all, long term operation on condition J60t60BW1/3 in winter and in summer confirmed that the UF system could provide sustainable and adaptable filtration performance regardless of the temperature and feed water quality. The UF permeate quality is good enough to be reused in non-potable applications as it met reuse guidelines of the World Health Organization, reuse standards of France and the most recent EU regulation for agricultural irrigation. This work confirms the great interest of UF as tertiary treatment for water reuse and gives operational indications for future industrialscale production of reclaimed water.
J. Yang, Mathias Monnot, T. Eljaddi, L. Ercolei, L. Simonian, et al.. Ultrafiltration as tertiary treatment for municipal wastewater reuse. Separation and Purification Technology, 2021, 272, pp.118921. ⟨10.1016/j.seppur.2021.118921⟩. ⟨hal-03597706⟩
Xueru Yan, Stéphane Anguille, Marc Bendahan, Philippe Moulin. Ionic Liquid Membrane Process for Removal of Volatile Organic Compounds from Lab to Industrial Scale. Chemical Engineering and Technology, 2021, 44 (11), pp.2159-2163. ⟨10.1002/ceat.202100189⟩. ⟨hal-03597689⟩ Plus de détails...
Hybrid processes have received more attention in pollutant removal due to the combination of advantages of each process. A membrane combined with absorption was developed and studied for the removal of volatile organic compounds (VOCs) from lab to industrial scale. The ionic liquid membrane containing 1-butyl-3-methylimidazolium bis(trifluoromethyl sulfonyl)imide ([Bmim][NTf 2 ]) showed competitive absorption on toluene. An industrial-length ionic liquid membrane was investigated under optimized conditions based on lab-scale results for a long time. The arrangement of the membrane modules was also evaluated, including connection in series and parallel. As a result, the proposed ionic liquid membrane is highly promising for industrial applications.
Xueru Yan, Stéphane Anguille, Marc Bendahan, Philippe Moulin. Ionic Liquid Membrane Process for Removal of Volatile Organic Compounds from Lab to Industrial Scale. Chemical Engineering and Technology, 2021, 44 (11), pp.2159-2163. ⟨10.1002/ceat.202100189⟩. ⟨hal-03597689⟩
Gautier Hypolite, Jean-Henry Ferrasse, Olivier Boutin, Sandrine del Sole, Jean-François Cloarec. Dynamic modeling of water temperature and flow in large water system. Applied Thermal Engineering, 2021, 196, pp.117261. ⟨10.1016/j.applthermaleng.2021.117261⟩. ⟨hal-03597512⟩ Plus de détails...
Thermal energy counts for a large part of the total energy consumption. To reduce fossil fuel consumption for heat and cold generation, different low temperature heat sources have been considered. Water networks have been considered as a large amount of water flow through it. To measure the thermal potential of the system, this paper provides a method in unsteady state to determine water temperature and flow in large water systems made of buried pipes. The model has been applied to a raw water supply system made up of 5000 km of piping and carrying 200 million m3 annually situated in the south of France. Water temperature is calculated considering heat exchange and the spatial specificities of the network (diameter of the pipes, depth, type of soil ...). Soil and water temperature measurements have been made to validate the model values. The model can predict water flow and temperature according to time with good accuracy: maximal error of 10% on the flow is obtained, the root mean square error on the calculated temperature is 0.84 circle C, and the correlation coefficient between the calculated and the measured temperature values is 0.98. The impact of adding several heat (or cold) injections in the system has been evaluated with the model. After a 2 MW heat exchange, the water temperature is increased by at least 1circC for 10 km downstream the exchange.
Gautier Hypolite, Jean-Henry Ferrasse, Olivier Boutin, Sandrine del Sole, Jean-François Cloarec. Dynamic modeling of water temperature and flow in large water system. Applied Thermal Engineering, 2021, 196, pp.117261. ⟨10.1016/j.applthermaleng.2021.117261⟩. ⟨hal-03597512⟩
N. Jacquet, S. Wurtzer, G. Darracq, Yvan Wyart, L. Moulin, et al.. Effect of concentration on virus removal for ultrafiltration membrane in drinking water production. Journal of Membrane Science, 2021, 634, pp.119417. ⟨10.1016/j.memsci.2021.119417⟩. ⟨hal-03514692⟩ Plus de détails...
Removal of pathogenic microorganisms as viruses during drinking water production was evaluated by ultrafiltration. Two enteric viruses (ADV 41 and CV-B5) were compared to the MS2 bacteriophage, largely used in literature and by membrane producers as enteric virus surrogate. The effect of feed concentration of viruses on the ultrafiltration efficiency has been assessed. For the three viruses, low retentions about 1 log were observed at the lowest concentrations. At higher concentrations, an increase of removal up to 3.0 log for CV-B5 and MS2 phage and 3.5 log for ADV 41 was observed. These results highlight the potential overestimation of UF efficiency during laboratory experiments realized at high concentrations, compared to low concentrations found in environmental resources used for drinking water production. Virus removals with Evian water and real groundwater were compared and groundwater achieved similar or slightly higher removals for the three viruses. Finally, impact of membrane ageing after chlorine exposure was checked. It was observed that membrane degradations, visible by a water permeability increase with exposure dose did not affect the removal of viruses at low feed concentrations.
N. Jacquet, S. Wurtzer, G. Darracq, Yvan Wyart, L. Moulin, et al.. Effect of concentration on virus removal for ultrafiltration membrane in drinking water production. Journal of Membrane Science, 2021, 634, pp.119417. ⟨10.1016/j.memsci.2021.119417⟩. ⟨hal-03514692⟩
Gautier Hypolite, Jean-Henry Ferrasse, Olivier Boutin, Sandrine del Sole, Jean-François Cloarec. Dynamic modeling of water temperature and flow in large water system. Applied Thermal Engineering, 2021, 196, pp.117261. ⟨10.1016/j.applthermaleng.2021.117261⟩. ⟨hal-03515146⟩ Plus de détails...
Thermal energy counts for a large part of the total energy consumption. To reduce fossil fuel consumption for heat and cold generation, different low temperature heat sources have been considered. Water networks have been considered as a large amount of water flow through it. To measure the thermal potential of the system, this paper provides a method in unsteady state to determine water temperature and flow in large water systems made of buried pipes. The model has been applied to a raw water supply system made up of 5000 km of piping and carrying 200 million m3 annually situated in the south of France. Water temperature is calculated considering heat exchange and the spatial specificities of the network (diameter of the pipes, depth, type of soil ...). Soil and water temperature measurements have been made to validate the model values. The model can predict water flow and temperature according to time with good accuracy: maximal error of 10% on the flow is obtained, the root mean square error on the calculated temperature is 0.84 circle C, and the correlation coefficient between the calculated and the measured temperature values is 0.98. The impact of adding several heat (or cold) injections in the system has been evaluated with the model. After a 2 MW heat exchange, the water temperature is increased by at least 1circC for 10 km downstream the exchange.
Gautier Hypolite, Jean-Henry Ferrasse, Olivier Boutin, Sandrine del Sole, Jean-François Cloarec. Dynamic modeling of water temperature and flow in large water system. Applied Thermal Engineering, 2021, 196, pp.117261. ⟨10.1016/j.applthermaleng.2021.117261⟩. ⟨hal-03515146⟩
Paolo Trucillo, Mathieu Martino, Ernesto Reverchon. Supercritical Assisted Production of Lutein-Loaded Liposomes and Modelling of Drug Release. Processes, 2021, 9 (7), pp.1162. ⟨10.3390/pr9071162⟩. ⟨hal-03515201⟩ Plus de détails...
In this work, a lipophilic ophthalmic drug, lutein, has been entrapped in liposomes, using a supercritical assisted process. Effects of pressure, temperature, and drug to lipid ratio variation were studied on mean diameters and lutein encapsulation efficiency. Liposomes with diameters between 153 ± 38 and 267 ± 56 nm were produced, and lutein encapsulation efficiencies between 86.5 ± 0.4% and 97.8 ± 1.2% were obtained. A Scanning Electron Microscope confirmed spherical shape and mean dimensions of vesicles. The variation of temperature for the production of liposomes showed a significant impact on lutein retention time in the double lipidic layer. Lutein drug release from liposomes produced at 35 °C ended in almost 4.5 days; whereas, liposomes produced at 40 °C showed a faster lutein release in 3 days; then, vesicles obtained at 45 °C released their lutein content in only 2 days. Drug release raw data were well-fitted using Weibull model (R2 up to 99%).
Paolo Trucillo, Mathieu Martino, Ernesto Reverchon. Supercritical Assisted Production of Lutein-Loaded Liposomes and Modelling of Drug Release. Processes, 2021, 9 (7), pp.1162. ⟨10.3390/pr9071162⟩. ⟨hal-03515201⟩
Sébastien Clercq, Feral Temelli, Elisabeth Badens. In-Depth Study of Cyclodextrin Complexation with Carotenoids toward the Formation of Enhanced Delivery Systems. Molecular Pharmaceutics, 2021, 18 (4), pp.1720-1729. ⟨10.1021/acs.molpharmaceut.0c01227⟩. ⟨hal-03334353⟩ Plus de détails...
The goal of this study was molecular modeling of cyclodextrin (CD) and carotenoid complex formation. Distinction was made between complexes resulting from interactions between carotenoids and either molecularly dispersed CDs or solid crystalline CDs, considering that both cases can occur depending on the complex formation process pathways. First, the formation of complexes from dispersed CD molecules was investigated considering five different CDs (αCD, βCD, methyl-βCD, hydroxypropyl-βCD, and γCD) and lutein, as a model carotenoid molecule. The interactions involved and the stability of the different complexes formed were evaluated according to the CD size and steric hindrance. Second, the formation of complexes between four different crystalline CDs (βCD with three different water contents and methyl-βCD) and three carotenoid molecules (lutein, lycopene, and β-carotene) was studied. The docking/adsorption of the carotenoid molecules was modeled on the different faces of the CD crystals. The findings highlight that all the CD faces, and thus their growth rates, were equally impacted by the adsorption of the carotenoids. This is due to the fact that all the CD faces are exhibiting similar chemical compositions, the three studied carotenoid molecules are rather chemically similar, and last, the water–carotenoid interactions appear to be weak compared to the CD–carotenoid interactions.
Sébastien Clercq, Feral Temelli, Elisabeth Badens. In-Depth Study of Cyclodextrin Complexation with Carotenoids toward the Formation of Enhanced Delivery Systems. Molecular Pharmaceutics, 2021, 18 (4), pp.1720-1729. ⟨10.1021/acs.molpharmaceut.0c01227⟩. ⟨hal-03334353⟩
Sébastien Clercq, Feral Temelli, Elisabeth Badens. In-Depth Study of Cyclodextrin Complexation with Carotenoids toward the Formation of Enhanced Delivery Systems. Molecular Pharmaceutics, 2021, 18 (4), pp.1720-1729. ⟨10.1021/acs.molpharmaceut.0c01227⟩. ⟨hal-03600451⟩ Plus de détails...
The goal of this study was molecular modeling of cyclodextrin (CD) and carotenoid complex formation. Distinction was made between complexes resulting from interactions between carotenoids and either molecularly dispersed CDs or solid crystalline CDs, considering that both cases can occur depending on the complex formation process pathways. First, the formation of complexes from dispersed CD molecules was investigated considering five different CDs (αCD, βCD, methyl-βCD, hydroxypropyl-βCD, and γCD) and lutein, as a model carotenoid molecule. The interactions involved and the stability of the different complexes formed were evaluated according to the CD size and steric hindrance. Second, the formation of complexes between four different crystalline CDs (βCD with three different water contents and methyl-βCD) and three carotenoid molecules (lutein, lycopene, and β-carotene) was studied. The docking/adsorption of the carotenoid molecules was modeled on the different faces of the CD crystals. The findings highlight that all the CD faces, and thus their growth rates, were equally impacted by the adsorption of the carotenoids. This is due to the fact that all the CD faces are exhibiting similar chemical compositions, the three studied carotenoid molecules are rather chemically similar, and last, the water–carotenoid interactions appear to be weak compared to the CD–carotenoid interactions.
Sébastien Clercq, Feral Temelli, Elisabeth Badens. In-Depth Study of Cyclodextrin Complexation with Carotenoids toward the Formation of Enhanced Delivery Systems. Molecular Pharmaceutics, 2021, 18 (4), pp.1720-1729. ⟨10.1021/acs.molpharmaceut.0c01227⟩. ⟨hal-03600451⟩
Mathieu Martino, Adil Mouahid, Paolo Trucillo, Elisabeth Badens. Elaboration of Lutein‐Loaded Nanoliposomes Using Supercritical CO2. European Journal of Lipid Science and Technology, 2021, 123 (4), pp.2000358. ⟨10.1002/ejlt.202000358⟩. ⟨hal-03334357⟩ Plus de détails...
A batch process for producing lutein-loaded liposomes using supercritical CO2 is studied. The effects of the variation of pressure (10 and 15 MPa), temperature (308, 313, and 318 K), and lutein to lipid ratio (0.5 and 1 wt%) on the liposome average size and size distribution are investigated, as well as on the encapsulation efficiency (EE) of lutein. This process is worked in a repeatable manner and is allowed the production of nanoliposomes with mean diameters (MDs) ranging from 65 ± 33 to 77 ± 40 nm, obtaining lutein EEs ranging from 82.1 ± 3.7% to 91.9 ± 2.9%. Temperature, pressure, and lutein to lipid ratio seem to have no impact on size, size distribution, and EE on formed liposomes. The use of low temperatures and low pressures allows the obtainment of liposomes with diameters less than 100 nm and limits the process energy cost. Moreover, the supercritical CO2-assisted batch process effectively encapsulates lutein into liposome, an antioxidant molecule used for the prevention of retinal damage. Liposomes formed by this supercritical process have the desired characteristics for human target delivery. Practical applications: This work on the optimization of a process for developing liposomes in a supercritical environment has applications in medicine. Indeed, the liposomes formed with this process are nanoliposomes with a size of less than 80 nm. In addition, excellent lutein EEs (hydrophobic molecules) show that the liposomes formed constitute excellent coating matrices for the protection of active ingredients. These reasons make these liposome matrices applicable in nanomedicine (injection of sensitive drugs requiring protection before injection). The elaboration process also makes it possible to form liposomes with desired properties by changing pressure, temperature, or lecithin concentration. Therefore, this work focuses on the properties of liposomes as a function of the operating conditions.
Mathieu Martino, Adil Mouahid, Paolo Trucillo, Elisabeth Badens. Elaboration of Lutein‐Loaded Nanoliposomes Using Supercritical CO2. European Journal of Lipid Science and Technology, 2021, 123 (4), pp.2000358. ⟨10.1002/ejlt.202000358⟩. ⟨hal-03334357⟩
Journal: European Journal of Lipid Science and Technology
Mathieu Martino, Adil Mouahid, Paolo Trucillo, Elisabeth Badens. Elaboration of Lutein‐Loaded Nanoliposomes Using Supercritical CO2. European Journal of Lipid Science and Technology, 2021, 123 (4), pp.2000358. ⟨10.1002/ejlt.202000358⟩. ⟨hal-03597665⟩ Plus de détails...
A batch process for producing lutein-loaded liposomes using supercritical CO2 is studied. The effects of the variation of pressure (10 and 15 MPa), temperature (308, 313, and 318 K), and lutein to lipid ratio (0.5 and 1 wt%) on the liposome average size and size distribution are investigated, as well as on the encapsulation efficiency (EE) of lutein. This process is worked in a repeatable manner and is allowed the production of nanoliposomes with mean diameters (MDs) ranging from 65 ± 33 to 77 ± 40 nm, obtaining lutein EEs ranging from 82.1 ± 3.7% to 91.9 ± 2.9%. Temperature, pressure, and lutein to lipid ratio seem to have no impact on size, size distribution, and EE on formed liposomes. The use of low temperatures and low pressures allows the obtainment of liposomes with diameters less than 100 nm and limits the process energy cost. Moreover, the supercritical CO2-assisted batch process effectively encapsulates lutein into liposome, an antioxidant molecule used for the prevention of retinal damage. Liposomes formed by this supercritical process have the desired characteristics for human target delivery. Practical applications: This work on the optimization of a process for developing liposomes in a supercritical environment has applications in medicine. Indeed, the liposomes formed with this process are nanoliposomes with a size of less than 80 nm. In addition, excellent lutein EEs (hydrophobic molecules) show that the liposomes formed constitute excellent coating matrices for the protection of active ingredients. These reasons make these liposome matrices applicable in nanomedicine (injection of sensitive drugs requiring protection before injection). The elaboration process also makes it possible to form liposomes with desired properties by changing pressure, temperature, or lecithin concentration. Therefore, this work focuses on the properties of liposomes as a function of the operating conditions.
Mathieu Martino, Adil Mouahid, Paolo Trucillo, Elisabeth Badens. Elaboration of Lutein‐Loaded Nanoliposomes Using Supercritical CO2. European Journal of Lipid Science and Technology, 2021, 123 (4), pp.2000358. ⟨10.1002/ejlt.202000358⟩. ⟨hal-03597665⟩
Journal: European Journal of Lipid Science and Technology
Morgane Le Hir, Adrien Magne, Thomas Clair, Emilie Carretier, Philippe Moulin. Solvent Regeneration in Complex Mixture Using Pervaporation. Organic Process Research and Development, 2021, 25 (3), pp.469-485. ⟨10.1021/acs.oprd.0c00442⟩. ⟨hal-03515300⟩ Plus de détails...
This study aims to demonstrate the efficiency of dichloromethane (DCM) regeneration from a methanolic effluent by a combination of distillation and membrane pervaporation process. The presence of an azeotrope (MeOH/DCM/water) makes the regeneration of DCM via distillation alone impossible. A process simulation using ProSim software was carried out in order to evaluate the behavior of the azeotropic mixture. Two secondary treatments aiming to purify the DCM contained in the azeotrope were investigated. The first is the washing of the azeotrope with water. ProSim software was used to target the optimal conditions for washing before the experimental test. Residual water was recovered in the organic phase, meaning that the quality specifications for DCM were not reached. The second process studied for DCM purification was a pervaporation step. The feasibility of this had been proven at laboratory scale. The recovered DCM had the quality of a new solvent, and the whole process (distillation + pervaporation) reached a global DCM regeneration yield of 71.8% before optimization. This yield was limited by the distillation of methylal (also called dimethoxymethane) present in the methanolic effluent at the end of the distillation of the azeotrope, a compound retained by the pervaporation membrane. The pervaporation was performed on a hydrophilic Hybsi membrane letting methanol and water pass through and retaining the DCM (membrane surface = 0.15 m(2)). Optimization and scaling up were then carried out with a semi-industrial pervaporation pilot (membrane surface = 1.05 m(2)) which enabled the industrial scale-up. In order to facilitate the steering of the process and to ensure continuous and efficient monitoring of the regeneration operation, online monitoring by near-infrared probe (NIR) had been implemented allowing the composition of the mixture to be determined with an accuracy of +/- 0.05% on each compound. Finally, an assessment had been conducted of the regeneration pathways for methanol recovery at the bottom of the distillation column, for maximizing the regeneration of methanolic effluents by separating heavy compounds and methylal from methanol.
Morgane Le Hir, Adrien Magne, Thomas Clair, Emilie Carretier, Philippe Moulin. Solvent Regeneration in Complex Mixture Using Pervaporation. Organic Process Research and Development, 2021, 25 (3), pp.469-485. ⟨10.1021/acs.oprd.0c00442⟩. ⟨hal-03515300⟩
Clémence Cordier, Alexandra Voulgaris, Christophe Stavrakakis, Patrick Sauvade, Franz Coelho, et al.. Ultrafiltration for environmental safety in shellfish production: A case of bloom emergence. Water Science and Engineering, 2021, 14 (1), pp.46-53. ⟨10.1016/j.wse.2021.03.003⟩. ⟨hal-03515327⟩ Plus de détails...
The process of ultrafiltration (UF) of natural seawater often encounters the problems of variation in water quality and coastal blooms. To validate the feasibility of UF in shellfish farms, this study compared the hydraulic performance and pollutant removal efficiency of the UF process with those of the commonly used treatments that combine several filtration steps with ultraviolet (UV) disinfection. The comparison was conducted in the cases of natural seawater and a coastal bloom. Given that the UF process encountered the specific type of pollution, this study evaluated the filtration performance of the UF process and the retention of total suspended solids (TSS), bacteria, phytoplankton, and zooplankton. A real coastal bloom was considered in the case study of an experimental shellfish hatchery/nursery in France. The results show that both treatments were able to eliminate approximately 50% of TSS. However, in contrast with UV treatment combined with filtration, the UF process retained total amounts of phytoplankton, zooplankton, and bacteria in the bloom. Although the hydraulic performance of the UF process was impacted by the coastal bloom, the fouling was eliminated through chemical cleaning conducted at a frequency less than once per 12 h. Despite the severe pollution, this study confirmed the pollution resistance and treatment performance of the UF process, indicating that UF has the potential to enhance the biosecurity level. (C) 2021 Hohai University. Production and hosting by Elsevier B.V.
Clémence Cordier, Alexandra Voulgaris, Christophe Stavrakakis, Patrick Sauvade, Franz Coelho, et al.. Ultrafiltration for environmental safety in shellfish production: A case of bloom emergence. Water Science and Engineering, 2021, 14 (1), pp.46-53. ⟨10.1016/j.wse.2021.03.003⟩. ⟨hal-03515327⟩
Clémence Cordier, Alexandra Voulgaris, Christophe Stavrakakis, Patrick Sauvade, Franz Coelho, et al.. Ultrafiltration for environmental safety in shellfish production: A case of bloom emergence. Water Science and Engineering, 2021, 14 (1), pp.46-53. ⟨10.1016/j.wse.2021.03.003⟩. ⟨hal-03515327⟩ Plus de détails...
The process of ultrafiltration (UF) of natural seawater often encounters the problems of variation in water quality and coastal blooms. To validate the feasibility of UF in shellfish farms, this study compared the hydraulic performance and pollutant removal efficiency of the UF process with those of the commonly used treatments that combine several filtration steps with ultraviolet (UV) disinfection. The comparison was conducted in the cases of natural seawater and a coastal bloom. Given that the UF process encountered the specific type of pollution, this study evaluated the filtration performance of the UF process and the retention of total suspended solids (TSS), bacteria, phytoplankton, and zooplankton. A real coastal bloom was considered in the case study of an experimental shellfish hatchery/nursery in France. The results show that both treatments were able to eliminate approximately 50% of TSS. However, in contrast with UV treatment combined with filtration, the UF process retained total amounts of phytoplankton, zooplankton, and bacteria in the bloom. Although the hydraulic performance of the UF process was impacted by the coastal bloom, the fouling was eliminated through chemical cleaning conducted at a frequency less than once per 12 h. Despite the severe pollution, this study confirmed the pollution resistance and treatment performance of the UF process, indicating that UF has the potential to enhance the biosecurity level. (C) 2021 Hohai University. Production and hosting by Elsevier B.V.
Clémence Cordier, Alexandra Voulgaris, Christophe Stavrakakis, Patrick Sauvade, Franz Coelho, et al.. Ultrafiltration for environmental safety in shellfish production: A case of bloom emergence. Water Science and Engineering, 2021, 14 (1), pp.46-53. ⟨10.1016/j.wse.2021.03.003⟩. ⟨hal-03515327⟩
Adil Mouahid, Isabelle Bombarda, Magalie Claeys-Bruno, Sandrine Amat, Emmanuelle Myotte, et al.. Supercritical CO2 extraction of Moroccan argan (Argania spinosa L.) oil: Extraction kinetics and solubility determination. Journal of CO2 Utilization, 2021, 46, pp.101458. ⟨10.1016/j.jcou.2021.101458⟩. ⟨hal-03142714⟩ Plus de détails...
Experimental and modelling investigations of supercritical CO 2 extraction of oil from Argania spinosa L. kernels were conducted at pressure range from 200 to 400 bar, temperature range of 313-333 K at a CO 2 flow rate of 0.14 kg/h. Regardless of the pressure and the temperature, the highest achievable yield was estimated at 0.63 kg oil / kg biomass. The extraction kinetics were modeled with Sovová's broken and intact cells model. The extraction of type B was found to be the most suited extraction type. Argan oil solubility in supercritical CO 2 was determined and modelled with the Chrastil equation. A retrograde solubility behaviour was observed at 200 bar and the faster extraction kinetics were found at 400 bar and 333 K. The total tocopherols concentration was found between 389.7 and 1688.6 mg/kg extract. Experiments were performed on unroasted and roasted kernels.
Adil Mouahid, Isabelle Bombarda, Magalie Claeys-Bruno, Sandrine Amat, Emmanuelle Myotte, et al.. Supercritical CO2 extraction of Moroccan argan (Argania spinosa L.) oil: Extraction kinetics and solubility determination. Journal of CO2 Utilization, 2021, 46, pp.101458. ⟨10.1016/j.jcou.2021.101458⟩. ⟨hal-03142714⟩
Paolo Trucillo, Mathieu Martino, Ernesto Reverchon. Supercritical Assisted Production of Lutein-Loaded Liposomes and Modelling of Drug Release. Processes, 2021, 9 (7), pp.1162. ⟨10.3390/pr9071162⟩. ⟨hal-03515201⟩ Plus de détails...
In this work, a lipophilic ophthalmic drug, lutein, has been entrapped in liposomes, using a supercritical assisted process. Effects of pressure, temperature, and drug to lipid ratio variation were studied on mean diameters and lutein encapsulation efficiency. Liposomes with diameters between 153 ± 38 and 267 ± 56 nm were produced, and lutein encapsulation efficiencies between 86.5 ± 0.4% and 97.8 ± 1.2% were obtained. A Scanning Electron Microscope confirmed spherical shape and mean dimensions of vesicles. The variation of temperature for the production of liposomes showed a significant impact on lutein retention time in the double lipidic layer. Lutein drug release from liposomes produced at 35 °C ended in almost 4.5 days; whereas, liposomes produced at 40 °C showed a faster lutein release in 3 days; then, vesicles obtained at 45 °C released their lutein content in only 2 days. Drug release raw data were well-fitted using Weibull model (R2 up to 99%).
Paolo Trucillo, Mathieu Martino, Ernesto Reverchon. Supercritical Assisted Production of Lutein-Loaded Liposomes and Modelling of Drug Release. Processes, 2021, 9 (7), pp.1162. ⟨10.3390/pr9071162⟩. ⟨hal-03515201⟩
N. Jacquet, S. Wurtzer, G. Darracq, Yvan Wyart, L. Moulin, et al.. Effect of concentration on virus removal for ultrafiltration membrane in drinking water production. Journal of Membrane Science, 2021, 634, pp.119417. ⟨10.1016/j.memsci.2021.119417⟩. ⟨hal-03597528⟩ Plus de détails...
Removal of pathogenic microorganisms as viruses during drinking water production was evaluated by ultrafiltration. Two enteric viruses (ADV 41 and CV-B5) were compared to the MS2 bacteriophage, largely used in literature and by membrane producers as enteric virus surrogate. The effect of feed concentration of viruses on the ultrafiltration efficiency has been assessed. For the three viruses, low retentions about 1 log were observed at the lowest concentrations. At higher concentrations, an increase of removal up to 3.0 log for CV-B5 and MS2 phage and 3.5 log for ADV 41 was observed. These results highlight the potential overestimation of UF efficiency during laboratory experiments realized at high concentrations, compared to low concentrations found in environmental resources used for drinking water production. Virus removals with Evian water and real groundwater were compared and groundwater achieved similar or slightly higher removals for the three viruses. Finally, impact of membrane ageing after chlorine exposure was checked. It was observed that membrane degradations, visible by a water permeability increase with exposure dose did not affect the removal of viruses at low feed concentrations.
N. Jacquet, S. Wurtzer, G. Darracq, Yvan Wyart, L. Moulin, et al.. Effect of concentration on virus removal for ultrafiltration membrane in drinking water production. Journal of Membrane Science, 2021, 634, pp.119417. ⟨10.1016/j.memsci.2021.119417⟩. ⟨hal-03597528⟩
Xueru Yan, Stéphane Anguille, Marc Bendahan, Philippe Moulin. Toluene removal from gas streams by an ionic liquid membrane: Experiment and modeling. Chemical Engineering Journal, Elsevier, 2021, 404, pp.127109. ⟨10.1016/j.cej.2020.127109⟩. ⟨hal-02958176⟩ Plus de détails...
Ionic liquids (ILs) are promising alternative solvents for traditional organic compounds using selective separation. However, some environmental risks of ILs, resulting in a limitation of their applications in industry. In this work, the stability of ILs into multi-channel tubular ceramic membranes (ILM) provides a promising way to realize the use of ILs with environmental damages reducing. This novel process has been investigated for toluene removal from a toluene/air gas mixture based on 1-butyl-3-imidazolium bis(trifluoromethylsulfonyl)amide ([Bmim][NTf2]) as a liquid sorbent. In addition, the effects of operating conditions on toluene separation were studied and discussed by experiment and modeling. The absorption capacity of toluene by the ILM on proposed operating conditions was around 224.74 mg per gram of the ionic liquid. The support ceramic membrane can effectively prevent ILs leakage from causing secondary waste and ensure longtime operation. Regeneration of polluted ILM was available.
Xueru Yan, Stéphane Anguille, Marc Bendahan, Philippe Moulin. Toluene removal from gas streams by an ionic liquid membrane: Experiment and modeling. Chemical Engineering Journal, Elsevier, 2021, 404, pp.127109. ⟨10.1016/j.cej.2020.127109⟩. ⟨hal-02958176⟩
Xueru Yan, Stéphane Anguille, Marc Bendahan, Philippe Moulin. Toluene removal from gas streams by an ionic liquid membrane: Experiment and modeling. Chemical Engineering Journal, 2021, 404, pp.127109. ⟨10.1016/j.cej.2020.127109⟩. ⟨hal-03597697⟩ Plus de détails...
Ionic liquids (ILs) are promising alternative solvents for traditional organic compounds using selective separation. However, some environmental risks of ILs, resulting in a limitation of their applications in industry. In this work, the stability of ILs into multi-channel tubular ceramic membranes (ILM) provides a promising way to realize the use of ILs with environmental damages reducing. This novel process has been investigated for toluene removal from a toluene/air gas mixture based on 1-butyl-3-imidazolium bis(trifluoromethylsulfonyl)amide ([Bmim][NTf2]) as a liquid sorbent. In addition, the effects of operating conditions on toluene separation were studied and discussed by experiment and modeling. The absorption capacity of toluene by the ILM on proposed operating conditions was around 224.74 mg per gram of the ionic liquid. The support ceramic membrane can effectively prevent ILs leakage from causing secondary waste and ensure longtime operation. Regeneration of polluted ILM was available.
Xueru Yan, Stéphane Anguille, Marc Bendahan, Philippe Moulin. Toluene removal from gas streams by an ionic liquid membrane: Experiment and modeling. Chemical Engineering Journal, 2021, 404, pp.127109. ⟨10.1016/j.cej.2020.127109⟩. ⟨hal-03597697⟩
Morgane Le Hir, Adrien Magne, Thomas Clair, Emilie Carretier, Philippe Moulin. Solvent Regeneration in Complex Mixture Using Pervaporation. Organic Process Research and Development, 2021, 25 (3), pp.469-485. ⟨10.1021/acs.oprd.0c00442⟩. ⟨hal-03597582⟩ Plus de détails...
This study aims to demonstrate the efficiency of dichloromethane (DCM) regeneration from a methanolic effluent by a combination of distillation and membrane pervaporation process. The presence of an azeotrope (MeOH/DCM/water) makes the regeneration of DCM via distillation alone impossible. A process simulation using ProSim software was carried out in order to evaluate the behavior of the azeotropic mixture. Two secondary treatments aiming to purify the DCM contained in the azeotrope were investigated. The first is the washing of the azeotrope with water. ProSim software was used to target the optimal conditions for washing before the experimental test. Residual water was recovered in the organic phase, meaning that the quality specifications for DCM were not reached. The second process studied for DCM purification was a pervaporation step. The feasibility of this had been proven at laboratory scale. The recovered DCM had the quality of a new solvent, and the whole process (distillation + pervaporation) reached a global DCM regeneration yield of 71.8% before optimization. This yield was limited by the distillation of methylal (also called dimethoxymethane) present in the methanolic effluent at the end of the distillation of the azeotrope, a compound retained by the pervaporation membrane. The pervaporation was performed on a hydrophilic Hybsi membrane letting methanol and water pass through and retaining the DCM (membrane surface = 0.15 m(2)). Optimization and scaling up were then carried out with a semi-industrial pervaporation pilot (membrane surface = 1.05 m(2)) which enabled the industrial scale-up. In order to facilitate the steering of the process and to ensure continuous and efficient monitoring of the regeneration operation, online monitoring by near-infrared probe (NIR) had been implemented allowing the composition of the mixture to be determined with an accuracy of +/- 0.05% on each compound. Finally, an assessment had been conducted of the regeneration pathways for methanol recovery at the bottom of the distillation column, for maximizing the regeneration of methanolic effluents by separating heavy compounds and methylal from methanol.
Morgane Le Hir, Adrien Magne, Thomas Clair, Emilie Carretier, Philippe Moulin. Solvent Regeneration in Complex Mixture Using Pervaporation. Organic Process Research and Development, 2021, 25 (3), pp.469-485. ⟨10.1021/acs.oprd.0c00442⟩. ⟨hal-03597582⟩
Adil Mouahid, Kanitta Seengeon, Mathieu Martino, Christelle Crampon, Avery Kramer, et al.. Selective extraction of neutral lipids and pigments from Nannochloropsis salina and Nannochloropsis maritima using supercritical CO2 extraction: Effects of process parameters and pre-treatment. Journal of Supercritical Fluids, 2020, 165, pp.104934. ⟨10.1016/j.supflu.2020.104934⟩. ⟨hal-02960133⟩ Plus de détails...
Supercritical CO2 extraction experiments were conducted to investigate the effects of pretreatment and process parameters on neutral lipids, chlorophylls and carotenoids recovery on two species of Nannochloropsis. For Nannochloropsis maritima, a factorial experimental design was performed (P: [100-300] bar, T: [313-333] K). The highest extraction yields were obtained at the highest pressures and temperatures. Two drying modes, ring drying and air flow drying, were compared. Although total extraction yield and extraction kinetics were observed to be greater using air flow dried microalgae, extracts from this drying method resulted in partial degradation of glycerides in free fatty acids. Ring dried extracts maintained the same neutral lipid composition as the initial biomass. Based on these results, ring dried Nannochloropsis salina was extracted using supercritical CO2 at 333 K and both 300-400 bar. Extraction curves were modelled using the Sovova's mathematical model.
Adil Mouahid, Kanitta Seengeon, Mathieu Martino, Christelle Crampon, Avery Kramer, et al.. Selective extraction of neutral lipids and pigments from Nannochloropsis salina and Nannochloropsis maritima using supercritical CO2 extraction: Effects of process parameters and pre-treatment. Journal of Supercritical Fluids, 2020, 165, pp.104934. ⟨10.1016/j.supflu.2020.104934⟩. ⟨hal-02960133⟩
Mathilda Trevisan, Lucas Barthélémy, Remy Ghidossi, Philippe Moulin. Silicon carbide (SiC) membranes in œnology: a laboratory-scale study. OENO One, 2020, 54 (4), pp.719-732. ⟨10.20870/oeno-one.2020.54.4.3856⟩. ⟨hal-03021906⟩ Plus de détails...
Unfiltered wine is a turbid medium that is not generally accepted by the consumer. Therefore, one or several filtration steps are required before bottling. Silicon carbide (SiC) membranes desirable parameters (porosity, tortuosity fluxes) allow filtering several different types of loaded matrices like wine or residue sediment. An in-depth filtration study was carried out on white and red wines to evaluate membrane efficiency and to optimise their cleaning procedure. Retention rates were studied as a function of wine type, filtration mode, and volumetric concentration factor. Compared to ceramic membranes, SiC membrane permeate fluxes are higher, up to a factor of 10 for red wine. For white wines, equivalent permeate fluxes could be obtained with dead-end filtration. Moreover, SiC membranes appear to be effective in obtaining a clear and brilliant wine and do not modify the concentration of the compounds of interest in wine. Finally, an optimised cleaning protocol has been identified and shown to restore a sufficient permeability to the SiC membranes.
Mathilda Trevisan, Lucas Barthélémy, Remy Ghidossi, Philippe Moulin. Silicon carbide (SiC) membranes in œnology: a laboratory-scale study. OENO One, 2020, 54 (4), pp.719-732. ⟨10.20870/oeno-one.2020.54.4.3856⟩. ⟨hal-03021906⟩
Sébastien Clercq, Adil Mouahid, Gérard Pèpe, Elisabeth Badens. Prediction of Crystal–Solvent Interactions in a Supercritical Medium: A Possible Way to Control Crystal Habit at High Supersaturations with Molecular Modeling. Crystal Growth & Design, 2020, 20 (10), pp.6863-6876. ⟨10.1021/acs.cgd.0c00920⟩. ⟨hal-03334336⟩ Plus de détails...
The purpose of this work is to contribute to a better control of the crystallization process which occurs in a supercritical medium, especially during the Supercritical AntiSolvent (SAS) process. It also aims to improve the prediction of crystal habit, thanks to the use of the molecular modeling software GenMol. The first part of the work was devoted to the crystal modeling of the two main forms of sulfathiazole in vacuo, considering Hartman’s attachment energy formalism. The second part considers solvent–crystal interactions throughout adsorption simulations to investigate the effect of growth environments on crystal habits. Lastly, modeling predictions were compared with grown crystals of sulfathiazole, observed after recrystallization with the SAS process from acetonitrile, acetone, tetrahydrofuran and acetic acid solutions. These comparisons demonstrated good predictions of crystal habit taking into consideration the growth environment. Neither carbon dioxide (antisolvent of the SAS process) nor acetonitrile leads to a modification of the isometric, in vacuo predicted habit of both forms. Acetone and tetrahydrofuran adsorb preferentially on some identified faces and lead to flat, leaflike, or tabular crystals. Acetic acid adsorbs on every one of the faces and hinders the phase transition to a more stable form, thus leading to crystals of the least stable, kinetically favored form I. Experimental observations were also rationalized by considering the different possible crystallization pathways, in particular Crystallization by Particle Attachment and Droplet Drying mechanisms occurring in the SAS process. This work confirms that solvent nature is one of the key elements to consider in order to better control the characteristics of particles grown using the SAS process and provides a new method to help to control it.
Sébastien Clercq, Adil Mouahid, Gérard Pèpe, Elisabeth Badens. Prediction of Crystal–Solvent Interactions in a Supercritical Medium: A Possible Way to Control Crystal Habit at High Supersaturations with Molecular Modeling. Crystal Growth & Design, 2020, 20 (10), pp.6863-6876. ⟨10.1021/acs.cgd.0c00920⟩. ⟨hal-03334336⟩
Mariam Fadel, Yvan Wyart, Philippe Moulin. An Efficient Method to Determine Membrane Molecular Weight Cut-Off Using Fluorescent Silica Nanoparticles. Membranes, 2020, 10 (10), pp.271. ⟨10.3390/membranes10100271⟩. ⟨hal-02963963⟩ Plus de détails...
Membrane processes have revolutionized many industries because they are more energy and environmentally friendly than other separation techniques. This initial selection of the membrane for any application is based on its Molecular Weight Cut-Off (MWCO). However, there is a lack of a quantitative, liable, and rapid method to determine the MWCO of the membrane. In this study, a methodology to determine the MWCO, based on the retention of fluorescent silica nanoparticles (NPs), is presented. Optimized experimental conditions (Transmembrane pressure, filtration duration, suspension concentration, etc.) have been performed on different membranes MWCO. Filtrations with suspension of fluorescent NPs of different diameters 70, 100, 200 and 300 nm have been examined. The NPs sizes were selected to cover a wide range in order to study NPs diameters larger, close to, and smaller than the membrane pore size. A particle tracking analysis with a nanosight allows us to calculate the retention curves at all times. The retention rate curves were shifted over the filtration process at different times due to the fouling. The mechanism of fouling of the retained NPs explains the determined value of the MWCO. The reliability of this methodology, which presents a rapid quantitative way to determine the MWCO, is in good agreement with the value given by the manufacturer. In addition, this methodology gives access to the retention curve and makes it possible to determine the MWCO as a function of the desired retention rate.
Mariam Fadel, Yvan Wyart, Philippe Moulin. An Efficient Method to Determine Membrane Molecular Weight Cut-Off Using Fluorescent Silica Nanoparticles. Membranes, 2020, 10 (10), pp.271. ⟨10.3390/membranes10100271⟩. ⟨hal-02963963⟩
Christophe Castel, Eric Favre, Sabine Rode, Emilie Carretier, Carole Arnal-Herault, et al.. Pervaporation : des matériaux membranaires aux procédés et à leurs applications. Techniques de l'Ingénieur, J2820 V2, p1-38, 2020. ⟨hal-03222910⟩ Plus de détails...
Christophe Castel, Eric Favre, Sabine Rode, Emilie Carretier, Carole Arnal-Herault, et al.. Pervaporation : des matériaux membranaires aux procédés et à leurs applications. Techniques de l'Ingénieur, J2820 V2, p1-38, 2020. ⟨hal-03222910⟩
Clémence Cordier, Christophe Stavrakakis, Benjamin Morga, Lionel Degremont, Alexandra Voulgaris, et al.. Removal of pathogens by ultrafiltration from sea water. Environment International, Elsevier, 2020, 142, pp.105809. ⟨10.1016/j.envint.2020.105809⟩. ⟨hal-02891935⟩ Plus de détails...
Among water treatment processes, ultrafiltration is known to be efficient for the elimination of micro-organisms (bacteria and viruses). In this study, two pathogens were targeted, a bacterium, Vibrio aestuarianus and a virus, OsHV-1, with the objective to produce high quality water from seawater, in the case of shellfish productions. The retention of those microorganisms by ultrafiltration was evaluated at labscale. In the case of OsHV-1, the protection of oysters was validated by in vivo experiments using oysters spat and larvae, both stages being highly susceptible to the virus. The oysters raised using contaminated seawater which was then subsequently treated by ultrafiltration, had similar mortality to the negative controls. In the case of V. aestuarianus, ultrafiltration allowed a high retention of the bacteria in seawater with concentrations below the detection limits of the 3 analytical methods (flow cytometry, direct seeding and seeding after filtration to 0.22 µm). Thus, the quantity of V. aestuarianus was at least, 400 times inferior to the threshold known to induce mortalities in oysters. Industrial scale experiment on a several months period confirmed the conclusion obtained at lab scale on the Vibrio bacteria retention. Indeed, no bacteria from this genus, potentially harmful for oysters, was detected in permeate and this, whatever the quality of the seawater treated and the bacteria concentration upstream of the membrane. Moreover, the resistance of the process was confirmed with a stability of hydraulic performances over time for two water qualities and even facing an algal bloom. In terms of retention and resistance, ultrafiltration process was validated for the treatment of seawater towards the targeted pathogenic microorganisms, with the aim of biosecuring shellfish productions.
Clémence Cordier, Christophe Stavrakakis, Benjamin Morga, Lionel Degremont, Alexandra Voulgaris, et al.. Removal of pathogens by ultrafiltration from sea water. Environment International, Elsevier, 2020, 142, pp.105809. ⟨10.1016/j.envint.2020.105809⟩. ⟨hal-02891935⟩
Clémence Cordier, Christophe Stavrakakis, Benjamin Morga, Lionel Degremont, Alexandra Voulgaris, et al.. Removal of pathogens by ultrafiltration from sea water. Environment International, 2020, 142, pp.105809. ⟨10.1016/j.envint.2020.105809⟩. ⟨hal-02891935⟩ Plus de détails...
Among water treatment processes, ultrafiltration is known to be efficient for the elimination of micro-organisms (bacteria and viruses). In this study, two pathogens were targeted, a bacterium, Vibrio aestuarianus and a virus, OsHV-1, with the objective to produce high quality water from seawater, in the case of shellfish productions. The retention of those microorganisms by ultrafiltration was evaluated at labscale. In the case of OsHV-1, the protection of oysters was validated by in vivo experiments using oysters spat and larvae, both stages being highly susceptible to the virus. The oysters raised using contaminated seawater which was then subsequently treated by ultrafiltration, had similar mortality to the negative controls. In the case of V. aestuarianus, ultrafiltration allowed a high retention of the bacteria in seawater with concentrations below the detection limits of the 3 analytical methods (flow cytometry, direct seeding and seeding after filtration to 0.22 µm). Thus, the quantity of V. aestuarianus was at least, 400 times inferior to the threshold known to induce mortalities in oysters. Industrial scale experiment on a several months period confirmed the conclusion obtained at lab scale on the Vibrio bacteria retention. Indeed, no bacteria from this genus, potentially harmful for oysters, was detected in permeate and this, whatever the quality of the seawater treated and the bacteria concentration upstream of the membrane. Moreover, the resistance of the process was confirmed with a stability of hydraulic performances over time for two water qualities and even facing an algal bloom. In terms of retention and resistance, ultrafiltration process was validated for the treatment of seawater towards the targeted pathogenic microorganisms, with the aim of biosecuring shellfish productions.
Clémence Cordier, Christophe Stavrakakis, Benjamin Morga, Lionel Degremont, Alexandra Voulgaris, et al.. Removal of pathogens by ultrafiltration from sea water. Environment International, 2020, 142, pp.105809. ⟨10.1016/j.envint.2020.105809⟩. ⟨hal-02891935⟩
Jiaqi Yang, Mathias Monnot, T. Eljaddi, L. Ercolei, Philippe Moulin. Water Reuse from Municipal Secondary Effluent by Ultrafiltration Becomes a Reality More than Ever. Open Access Journal of Environmental & Soil Science, 2020, 5 (3), pp.655-659. ⟨hal-02958224⟩ Plus de détails...
Jiaqi Yang, Mathias Monnot, T. Eljaddi, L. Ercolei, Philippe Moulin. Water Reuse from Municipal Secondary Effluent by Ultrafiltration Becomes a Reality More than Ever. Open Access Journal of Environmental & Soil Science, 2020, 5 (3), pp.655-659. ⟨hal-02958224⟩
Journal: Open Access Journal of Environmental & Soil Science
Mathias Monnot, S. Laborie, G. Hébrard, N. Dietrich. New approaches to adapt escape game activities to large audience in chemical engineering: Numeric supports and students’ participation. Education for Chemical Engineers, 2020, 32 (6), pp.50-58. ⟨10.1016/j.ece.2020.05.007⟩. ⟨hal-02902064⟩ Plus de détails...
Gamification is a widespread phenomenon that relies on using game mechanics in other areas, such as the learning situation. One of the most exciting types of games in the late 2010s is escape games, where the principle is for the players to manage to escape from a room in which they are locked by finding hidden items and following a sequence of puzzles. The goal of using this type of game is to motivate/involve learners, to make them work and develop adaptability and responsiveness skills. Unfortunately, these escape games are only practiced in small groups, and the design is expensive and time-consuming. That is why cost-effective alternatives are proposed in this paper. They are either dematerialized, entirely based on a digital medium (smartphone/tablets/computer), or directly created by students, also with a digital medium, allowing integration into large classes, or at open house events.
Mathias Monnot, S. Laborie, G. Hébrard, N. Dietrich. New approaches to adapt escape game activities to large audience in chemical engineering: Numeric supports and students’ participation. Education for Chemical Engineers, 2020, 32 (6), pp.50-58. ⟨10.1016/j.ece.2020.05.007⟩. ⟨hal-02902064⟩
Cordier Clémence, C. Stavrakakis, L. Charpin, M Papin, K. Guyomard, et al.. Ultrafiltration to produce pathogen free water in shellfish farms. Water today, 2020, 4, pp.28-34. ⟨hal-02891915⟩ Plus de détails...
This study demonstrates that, whatever the quality of the seawater, the ultrafiltration process delivers disinfected water with a quality adapted to shellfish culture.
Cordier Clémence, C. Stavrakakis, L. Charpin, M Papin, K. Guyomard, et al.. Ultrafiltration to produce pathogen free water in shellfish farms. Water today, 2020, 4, pp.28-34. ⟨hal-02891915⟩
Kelly Ohanessian, Mathias Monnot, Philippe Moulin, Jean-Henry Ferrasse, Cristian Barca, et al.. Dead-end and crossflow ultrafiltration process modelling: Application on chemical mechanical polishing wastewaters. Chemical Engineering Research and Design, 2020, 158, pp.164-176. ⟨10.1016/j.cherd.2020.04.007⟩. ⟨hal-02892457⟩ Plus de détails...
Dynamic simulation of ultrafiltration process is applied to the treatment of chemical mechanical polishing wastewater from microelectronic industry. The ultrafiltration of nanoparticles (NPs) contained in chemical mechanical polishing wastewater is modelled by using different mathematical equations, which are derived from the literature and optimized to the effluent and filtration modes (dead-end or crossflow). A series of ultrafiltration experiments at laboratory scale are carried out by using chemical mechanical polishing wastewater to optimize and validate the models. Complete dead-end and crossflow ultrafiltration models are developed to simulate the treatment performances of chemical mechanical polishing wastewater under dynamic full-scale and different operating conditions, thus including filtration and washing steps. Simulations show that the dead-end mode is not suitable for chemical mechanical polishing wastewater concentration higher than 100 mgNPs L-1 due to the too fast fouling time and to the high frequency of washing step. The high concentration of chemical mechanical polishing P wastewater (2600 mgNPs L-1) forces industries to use crossflow ultrafiltration to have a profitable process by controlling parameters such as the filtration/backwashing number of cycles, the needed filtering surface and the filtration flux.
Kelly Ohanessian, Mathias Monnot, Philippe Moulin, Jean-Henry Ferrasse, Cristian Barca, et al.. Dead-end and crossflow ultrafiltration process modelling: Application on chemical mechanical polishing wastewaters. Chemical Engineering Research and Design, 2020, 158, pp.164-176. ⟨10.1016/j.cherd.2020.04.007⟩. ⟨hal-02892457⟩
Jiaqi Yang, Mathias Monnot, Lionel Ercolei, Philippe Moulin. Membrane-Based Processes Used in Municipal Wastewater Treatment for Water Reuse: State-Of-The-Art and Performance Analysis. Membranes, 2020, 10 (6), pp.131. ⟨10.3390/membranes10060131⟩. ⟨hal-02891720⟩ Plus de détails...
Wastewater reuse as a sustainable, reliable and energy recovery concept is a promising approach to alleviate worldwide water scarcity. However, the water reuse market needs to be developed with long-term efforts because only less than 4% of the total wastewater worldwide has been treated for water reuse at present. In addition, the reclaimed water should fulfill the criteria of health safety, appearance, environmental acceptance and economic feasibility based on their local water reuse guidelines. Moreover, municipal wastewater as an alternative water resource for non-potable or potable reuse, has been widely treated by various membrane-based treatment processes for reuse applications. By collecting lab-scale and pilot-scale reuse cases as much as possible, this review aims to provide a comprehensive summary of the membrane-based treatment processes, mainly focused on the hydraulic filtration performance, contaminants removal capacity, reuse purpose, fouling resistance potential, resource recovery and energy consumption. The advances and limitations of different membrane-based processes alone or coupled with other possible processes such as disinfection processes and advanced oxidation processes, are also highlighted. Challenges still facing membrane-based technologies for water reuse applications, including institutional barriers, financial allocation and public perception, are stated as areas in need of further research and development.
Jiaqi Yang, Mathias Monnot, Lionel Ercolei, Philippe Moulin. Membrane-Based Processes Used in Municipal Wastewater Treatment for Water Reuse: State-Of-The-Art and Performance Analysis. Membranes, 2020, 10 (6), pp.131. ⟨10.3390/membranes10060131⟩. ⟨hal-02891720⟩
Clémence Cordier, Tarik Eljaddi, Nadjim Ibouroihim, Christophe Stavrakakis, Patrick Sauvade, et al.. Optimization of Air Backwash Frequency during the Ultrafiltration of Seawater. Membranes, 2020, 10 (4), pp.78. ⟨10.3390/membranes10040078⟩. ⟨hal-02891926⟩ Plus de détails...
The main objective of this paper is to study the effect of new air backwash on dead-end ultrafiltration of seawater with a pilot at semi-industrial scale (20 m3/day). To control membrane fouling, two different backwashes were used to clean the membrane: classical backwash (CB) and new air backwash (AB) that consists of injecting air into the membrane module before a classical backwash. To evaluate the efficiency of AB and CB, a resistance in series model was used to calculate each resistance: membrane (Rm), reversible (Rrev) and irreversible (Rirr). The variation of the seawater quality was considered by integrating the turbidity variation versus time. The results indicate clearly that AB was more performant than CB and frequency of AB/CB cycles was important to control membrane fouling. In this study, frequencies of 1/5 and 1/3 appear more efficient than 1/7 and 1/9. In addition, the operation conditions (flux and time of filtration) had an important role in maintaining membrane performance—whatever the variation of the seawater quality.
Clémence Cordier, Tarik Eljaddi, Nadjim Ibouroihim, Christophe Stavrakakis, Patrick Sauvade, et al.. Optimization of Air Backwash Frequency during the Ultrafiltration of Seawater. Membranes, 2020, 10 (4), pp.78. ⟨10.3390/membranes10040078⟩. ⟨hal-02891926⟩
Clémence Cordier, Tarik Eljaddi, Nadjim Ibouroihim, Christophe Stavrakakis, Patrick Sauvade, et al.. Optimization of Air Backwash Frequency during the Ultrafiltration of Seawater. Membranes, 2020, 10 (4), pp.78. ⟨10.3390/membranes10040078⟩. ⟨hal-02891926⟩ Plus de détails...
The main objective of this paper is to study the effect of new air backwash on dead-end ultrafiltration of seawater with a pilot at semi-industrial scale (20 m3/day). To control membrane fouling, two different backwashes were used to clean the membrane: classical backwash (CB) and new air backwash (AB) that consists of injecting air into the membrane module before a classical backwash. To evaluate the efficiency of AB and CB, a resistance in series model was used to calculate each resistance: membrane (Rm), reversible (Rrev) and irreversible (Rirr). The variation of the seawater quality was considered by integrating the turbidity variation versus time. The results indicate clearly that AB was more performant than CB and frequency of AB/CB cycles was important to control membrane fouling. In this study, frequencies of 1/5 and 1/3 appear more efficient than 1/7 and 1/9. In addition, the operation conditions (flux and time of filtration) had an important role in maintaining membrane performance—whatever the variation of the seawater quality.
Clémence Cordier, Tarik Eljaddi, Nadjim Ibouroihim, Christophe Stavrakakis, Patrick Sauvade, et al.. Optimization of Air Backwash Frequency during the Ultrafiltration of Seawater. Membranes, 2020, 10 (4), pp.78. ⟨10.3390/membranes10040078⟩. ⟨hal-02891926⟩
Imen Khouni, Ghofrane Louhichi, Ahmed Ghrabi, Philippe Moulin. Efficiency of a coagulation/flocculation–membrane filtration hybrid process for the treatment of vegetable oil refinery wastewater for safe reuse and recovery. Process Safety and Environmental Protection, Elsevier, 2020, 135, pp.323-341. ⟨10.1016/j.psep.2020.01.004⟩. ⟨hal-02456585⟩ Plus de détails...
Imen Khouni, Ghofrane Louhichi, Ahmed Ghrabi, Philippe Moulin. Efficiency of a coagulation/flocculation–membrane filtration hybrid process for the treatment of vegetable oil refinery wastewater for safe reuse and recovery. Process Safety and Environmental Protection, Elsevier, 2020, 135, pp.323-341. ⟨10.1016/j.psep.2020.01.004⟩. ⟨hal-02456585⟩
Journal: Process Safety and Environmental Protection
Imen Khouni, Ghofrane Louhichi, Ahmed Ghrabi, Philippe Moulin. Efficiency of a coagulation/flocculation–membrane filtration hybrid process for the treatment of vegetable oil refinery wastewater for safe reuse and recovery. Process Safety and Environmental Protection, 2020, 135, pp.323-341. ⟨10.1016/j.psep.2020.01.004⟩. ⟨hal-02456585⟩ Plus de détails...
Imen Khouni, Ghofrane Louhichi, Ahmed Ghrabi, Philippe Moulin. Efficiency of a coagulation/flocculation–membrane filtration hybrid process for the treatment of vegetable oil refinery wastewater for safe reuse and recovery. Process Safety and Environmental Protection, 2020, 135, pp.323-341. ⟨10.1016/j.psep.2020.01.004⟩. ⟨hal-02456585⟩
Journal: Process Safety and Environmental Protection
C. Pinchai, Mathias Monnot, S. Lefèvre, Olivier Boutin, Philippe Moulin. Membrane filtration coupled with wet air oxidation for intensified treatment of biorefractory effluents. Water Science and Technology, 2020, pp.wst2020052. ⟨10.2166/wst.2020.052⟩. ⟨hal-02481682⟩ Plus de détails...
This work aims to analyse the performances of a new hybrid process: membrane filtration to concentrate biorefractory wastewater before being treated by a hydrothermal process such as wet air oxidation. The aim is to obtain a complete discharge of the effluent in the environment. The three different synthetic wastewaters under study were pharmaceutical wastewater, grey wastewater and bilge wastewater. The results of the membrane filtration showed high retention rates as it could reach between 75% and 100% of total organic carbon rentention, more than 99% of turbidity removal and more than 70% of hydrocarbon retention. Moreover, it was possible to achieve high concentration factors comprised between 17 and 40 times. Membrane fouling was chemically reversible regardless of the type of pollution. Then, the treatment of the membrane retentates by wet air oxidation process (300 °C, 15 MPa) could eliminate more than 83% of organic pollution for all the tested effluents. In summary, the hybrid intensified process could finally decrease the volume and the waste load of wastewater before possibly discharging it into the environment.
C. Pinchai, Mathias Monnot, S. Lefèvre, Olivier Boutin, Philippe Moulin. Membrane filtration coupled with wet air oxidation for intensified treatment of biorefractory effluents. Water Science and Technology, 2020, pp.wst2020052. ⟨10.2166/wst.2020.052⟩. ⟨hal-02481682⟩
Adil Mouahid, Kanitta Seengeon, Mathieu Martino, Christelle Crampon, Avery Kramer, et al.. Selective extraction of neutral lipids and pigments from Nannochloropsis salina and Nannochloropsis maritima using supercritical CO2 extraction: Effects of process parameters and pre-treatment. Journal of Supercritical Fluids, 2020, 165, pp.104934. ⟨10.1016/j.supflu.2020.104934⟩. ⟨hal-03232116⟩ Plus de détails...
Supercritical CO2 extraction experiments were conducted to investigate the effects of pretreatment and process parameters on neutral lipids, chlorophylls and carotenoids recovery on two species of Nannochloropsis. For Nannochloropsis maritima, a factorial experimental design was performed (P: [100-300] bar, T: [313-333] K). The highest extraction yields were obtained at the highest pressures and temperatures. Two drying modes, ring drying and air flow drying, were compared. Although total extraction yield and extraction kinetics were observed to be greater using air flow dried microalgae, extracts from this drying method resulted in partial degradation of glycerides in free fatty acids. Ring dried extracts maintained the same neutral lipid composition as the initial biomass. Based on these results, ring dried Nannochloropsis salina was extracted using supercritical CO2 at 333 K and both 300-400 bar. Extraction curves were modelled using the Sovova's mathematical model.
Adil Mouahid, Kanitta Seengeon, Mathieu Martino, Christelle Crampon, Avery Kramer, et al.. Selective extraction of neutral lipids and pigments from Nannochloropsis salina and Nannochloropsis maritima using supercritical CO2 extraction: Effects of process parameters and pre-treatment. Journal of Supercritical Fluids, 2020, 165, pp.104934. ⟨10.1016/j.supflu.2020.104934⟩. ⟨hal-03232116⟩
Jiaqi Yang, Mathias Monnot, Lionel Ercolei, Philippe Moulin. Membrane-Based Processes Used in Municipal Wastewater Treatment for Water Reuse: State-Of-The-Art and Performance Analysis. Membranes, 2020, 10 (6), pp.131. ⟨10.3390/membranes10060131⟩. ⟨hal-02891720⟩ Plus de détails...
Wastewater reuse as a sustainable, reliable and energy recovery concept is a promising approach to alleviate worldwide water scarcity. However, the water reuse market needs to be developed with long-term efforts because only less than 4% of the total wastewater worldwide has been treated for water reuse at present. In addition, the reclaimed water should fulfill the criteria of health safety, appearance, environmental acceptance and economic feasibility based on their local water reuse guidelines. Moreover, municipal wastewater as an alternative water resource for non-potable or potable reuse, has been widely treated by various membrane-based treatment processes for reuse applications. By collecting lab-scale and pilot-scale reuse cases as much as possible, this review aims to provide a comprehensive summary of the membrane-based treatment processes, mainly focused on the hydraulic filtration performance, contaminants removal capacity, reuse purpose, fouling resistance potential, resource recovery and energy consumption. The advances and limitations of different membrane-based processes alone or coupled with other possible processes such as disinfection processes and advanced oxidation processes, are also highlighted. Challenges still facing membrane-based technologies for water reuse applications, including institutional barriers, financial allocation and public perception, are stated as areas in need of further research and development.
Jiaqi Yang, Mathias Monnot, Lionel Ercolei, Philippe Moulin. Membrane-Based Processes Used in Municipal Wastewater Treatment for Water Reuse: State-Of-The-Art and Performance Analysis. Membranes, 2020, 10 (6), pp.131. ⟨10.3390/membranes10060131⟩. ⟨hal-02891720⟩
Jiaqi Yang, Mathias Monnot, T. Eljaddi, L. Ercolei, Philippe Moulin. Water Reuse from Municipal Secondary Effluent by Ultrafiltration Becomes a Reality More than Ever. Open Access Journal of Environmental & Soil Science, 2020, 5 (3), pp.655-659. ⟨10.32474/OAJESS.2020.05.000214⟩. ⟨hal-03232125⟩ Plus de détails...
Jiaqi Yang, Mathias Monnot, T. Eljaddi, L. Ercolei, Philippe Moulin. Water Reuse from Municipal Secondary Effluent by Ultrafiltration Becomes a Reality More than Ever. Open Access Journal of Environmental & Soil Science, 2020, 5 (3), pp.655-659. ⟨10.32474/OAJESS.2020.05.000214⟩. ⟨hal-03232125⟩
Journal: Open Access Journal of Environmental & Soil Science
Mariam Fadel, Yvan Wyart, Philippe Moulin. An Efficient Method to Determine Membrane Molecular Weight Cut-Off Using Fluorescent Silica Nanoparticles. Membranes, 2020, 10 (10), pp.271. ⟨10.3390/membranes10100271⟩. ⟨hal-02963963⟩ Plus de détails...
Membrane processes have revolutionized many industries because they are more energy and environmentally friendly than other separation techniques. This initial selection of the membrane for any application is based on its Molecular Weight Cut-Off (MWCO). However, there is a lack of a quantitative, liable, and rapid method to determine the MWCO of the membrane. In this study, a methodology to determine the MWCO, based on the retention of fluorescent silica nanoparticles (NPs), is presented. Optimized experimental conditions (Transmembrane pressure, filtration duration, suspension concentration, etc.) have been performed on different membranes MWCO. Filtrations with suspension of fluorescent NPs of different diameters 70, 100, 200 and 300 nm have been examined. The NPs sizes were selected to cover a wide range in order to study NPs diameters larger, close to, and smaller than the membrane pore size. A particle tracking analysis with a nanosight allows us to calculate the retention curves at all times. The retention rate curves were shifted over the filtration process at different times due to the fouling. The mechanism of fouling of the retained NPs explains the determined value of the MWCO. The reliability of this methodology, which presents a rapid quantitative way to determine the MWCO, is in good agreement with the value given by the manufacturer. In addition, this methodology gives access to the retention curve and makes it possible to determine the MWCO as a function of the desired retention rate.
Mariam Fadel, Yvan Wyart, Philippe Moulin. An Efficient Method to Determine Membrane Molecular Weight Cut-Off Using Fluorescent Silica Nanoparticles. Membranes, 2020, 10 (10), pp.271. ⟨10.3390/membranes10100271⟩. ⟨hal-02963963⟩
C. Savaro, J.P. Bonnet, M.V. Johansson, Pierre Perrier, Irina Martin Graur, et al.. Gas permeability in rarefied flow conditions for characterization of mineral membrane support. European Journal of Mechanics - B/Fluids, 2020, 79, pp.44-53. ⟨10.1016/j.euromechflu.2019.07.005⟩. ⟨hal-02904990⟩ Plus de détails...
Gas Permeability Measurement Technique (GPMT) has the advantage of being a non-destructive method, which is efficient in characterizing filtration membranes. Ceramic filtration membranes consist of successive layers of micro (support) to nano size (skin) pores. When gas flows through such a small scale structure, the molecular mean free path becomes comparable to the pore size. The Slip flow model, validated to describe the gas transport properties under rarefied flow conditions in a microchannel, is extended to porous media. The porous structure is modeled as a cluster of several identical cylindrical channels. By measuring the pressure drop ∆P at several different mean pressures, the pore radius and the porosity on square tortuosity ratio /τ 2 of the porous model structure that have the same flow property were estimated. Nomenclature G Geometric factor (m −1) H Effective length of hollow fiber (m) J Mass flux density (kg.s −1 .m −2) K Hydraulic conductivity (s) Kn Knudsen number L p Channel length / Gas path length through the porous media (m) N Channel number P Gas pressure (Pa) P 0 Pressure upstream the nozzle (bar) P 1 Pressure upstream the porous sample (bar) P 2 Pressure downstream the porous sample (bar) P c Nozzle critical pressure (bar) P m Mean pressure (Pa)
C. Savaro, J.P. Bonnet, M.V. Johansson, Pierre Perrier, Irina Martin Graur, et al.. Gas permeability in rarefied flow conditions for characterization of mineral membrane support. European Journal of Mechanics - B/Fluids, 2020, 79, pp.44-53. ⟨10.1016/j.euromechflu.2019.07.005⟩. ⟨hal-02904990⟩
Cordier Clémence, Killian Guyomard, Christophe Stavrakakis, Patrick Sauvade, Franz Coelho, et al.. Culture of Microalgae with Ultrafiltered Seawater : A Feasibility Study. SciMedicine Journal, 2020, 2 (2), pp.56-62. ⟨hal-02891956⟩ Plus de détails...
The culture of microalgae is important for the production and maintenance of bivalves. One of the major challenges is to maintain the reliability of microalgae forages over the long term. The aim of this work is to use Ultrafiltered (UF) seawater to cultivate them. Thus, cultures in a volume of 300 L of 2 species of microalgae Tetraselmis and T-isochrysis, were monitored in UF water (membrane pore size: 20 nm) and in sea water usually used on the Ifremer mollusk experimental platform of Bouin (France) (Prefiltration, 3 filtrations and 2 UV). The major result is the securing of microlagae cultures with the absence of parasites in all cultures supplied with ultrafiltered water, unlike analyses of the various control cultures. In the case of T-isochrysis, 3 cultures out of 4 resulted in higher microalgae concentrations, up to 30%, in ultrafiltered water thus bringing a benefit on the algal density. These conclusions and the ease of recovering water (linked to the reduction in treatment stages) allowed a transfer of technology. In fact the 300 L cultures hitherto carried out on the experimental platform are now produced in ultrafiltered water since early 2019.
Cordier Clémence, Killian Guyomard, Christophe Stavrakakis, Patrick Sauvade, Franz Coelho, et al.. Culture of Microalgae with Ultrafiltered Seawater : A Feasibility Study. SciMedicine Journal, 2020, 2 (2), pp.56-62. ⟨hal-02891956⟩
Y. Jaouad, M. Villain-Gambier, L. Mandi, B. Marrot, N. Ouazzani. Comparison of aerobic processes for olive mill wastewater treatment. Water Science and Technology, 2020, 81 (9), pp.1914-1926. ⟨10.2166/wst.2020.247⟩. ⟨hal-03232154⟩ Plus de détails...
Membrane bioreactor (MBR) has been proven to be an efficient technology capable of treating various industrial effluents. However, the evaluation of its performances in the case of olive mill wastewater (OMW) over a conventional activated sludge (CAS) have not been determined yet. The present study aims to compare OMW treatment in two laboratory scale pilots: an external ceramic MBR and CAS starting with an acclimation step in both reactors by raising OMW concentration progressively. After the acclimation step, the reactors received OMW at 2 g COD /L with respect to an organic loading rate of 0.2 and 0.3 kg COD /kg MLVSS /d for MBR and CAS, respectively. Biomass acclimation occurred successfully in both systems; however, the MBR tolerated more OMW toxicity than CAS as the MBR always maintained an effluent with a better quality. At a stable state, a higher reduction of 95% chemical oxygen demand (COD) was obtained with MBR compared to CAS (86%), but both succeeded in polyphenols removal (80%). Moreover, a higher MLSS elimination from the MBR treated water (97%) was measured against 88% for CAS. Therefore, CAS was suitable for OMW treatment and MBR could be proposed as an alternative to CAS when a better quality of treated water is required.
Y. Jaouad, M. Villain-Gambier, L. Mandi, B. Marrot, N. Ouazzani. Comparison of aerobic processes for olive mill wastewater treatment. Water Science and Technology, 2020, 81 (9), pp.1914-1926. ⟨10.2166/wst.2020.247⟩. ⟨hal-03232154⟩
Adil Mouahid, Kanitta Seengeon, Mathieu Martino, Christelle Crampon, Avery Kramer, et al.. Selective extraction of neutral lipids and pigments from Nannochloropsis salina and Nannochloropsis maritima using supercritical CO2 extraction: Effects of process parameters and pre-treatment. Journal of Supercritical Fluids, 2020, 165, pp.104934. ⟨10.1016/j.supflu.2020.104934⟩. ⟨hal-02960133⟩ Plus de détails...
Supercritical CO2 extraction experiments were conducted to investigate the effects of pretreatment and process parameters on neutral lipids, chlorophylls and carotenoids recovery on two species of Nannochloropsis. For Nannochloropsis maritima, a factorial experimental design was performed (P: [100-300] bar, T: [313-333] K). The highest extraction yields were obtained at the highest pressures and temperatures. Two drying modes, ring drying and air flow drying, were compared. Although total extraction yield and extraction kinetics were observed to be greater using air flow dried microalgae, extracts from this drying method resulted in partial degradation of glycerides in free fatty acids. Ring dried extracts maintained the same neutral lipid composition as the initial biomass. Based on these results, ring dried Nannochloropsis salina was extracted using supercritical CO2 at 333 K and both 300-400 bar. Extraction curves were modelled using the Sovova's mathematical model.
Adil Mouahid, Kanitta Seengeon, Mathieu Martino, Christelle Crampon, Avery Kramer, et al.. Selective extraction of neutral lipids and pigments from Nannochloropsis salina and Nannochloropsis maritima using supercritical CO2 extraction: Effects of process parameters and pre-treatment. Journal of Supercritical Fluids, 2020, 165, pp.104934. ⟨10.1016/j.supflu.2020.104934⟩. ⟨hal-02960133⟩
Clémence Cordier, Killian Guyomard, Christophe Stavrakakis, Patrick Sauvade, Franz Coelho, et al.. Culture of Microalgae with Ultrafiltered Seawater : A Feasibility Study. SciMedicine Journal, 2020, 2 (2), pp.56-62. ⟨hal-03251568⟩ Plus de détails...
The culture of microalgae is important for the production and maintenance of bivalves. One of the major challenges is to maintain the reliability of microalgae forages over the long term. The aim of this work is to use Ultrafiltered (UF) seawater to cultivate them. Thus, cultures in a volume of 300 L of 2 species of microalgae Tetraselmis and T-isochrysis, were monitored in UF water (membrane pore size: 20 nm) and in sea water usually used on the Ifremer mollusk experimental platform of Bouin (France) (Prefiltration, 3 filtrations and 2 UV). The major result is the securing of microlagae cultures with the absence of parasites in all cultures supplied with ultrafiltered water, unlike analyses of the various control cultures. In the case of T-isochrysis, 3 cultures out of 4 resulted in higher microalgae concentrations, up to 30%, in ultrafiltered water thus bringing a benefit on the algal density. These conclusions and the ease of recovering water (linked to the reduction in treatment stages) allowed a transfer of technology. In fact the 300 L cultures hitherto carried out on the experimental platform are now produced in ultrafiltered water since early 2019.
Clémence Cordier, Killian Guyomard, Christophe Stavrakakis, Patrick Sauvade, Franz Coelho, et al.. Culture of Microalgae with Ultrafiltered Seawater : A Feasibility Study. SciMedicine Journal, 2020, 2 (2), pp.56-62. ⟨hal-03251568⟩
Y. Jaouad, M. Villain-Gambier, L. Mandi, B. Marrot, N. Ouazzani. Comparison of aerobic processes for olive mill wastewater treatment. Water Science and Technology, 2020, 81 (9), pp.1914-1926. ⟨10.2166/wst.2020.247⟩. ⟨hal-02936667⟩ Plus de détails...
Y. Jaouad, M. Villain-Gambier, L. Mandi, B. Marrot, N. Ouazzani. Comparison of aerobic processes for olive mill wastewater treatment. Water Science and Technology, 2020, 81 (9), pp.1914-1926. ⟨10.2166/wst.2020.247⟩. ⟨hal-02936667⟩
Chamaiporn Pinchai, Mathias Monnot, Sébastien Lefevre, Olivier Boutin, Philippe Moulin. Coupling membrane filtration and wet air oxidation for advanced wastewater treatment: Performance at the pilot scale and process intensification potential. Canadian Journal of Chemical Engineering, 2019, pp.1-10. ⟨10.1002/cjce.23688⟩. ⟨hal-02416179⟩ Plus de détails...
Bio‐refractory wastewater treatment is compulsory for a safe discharge into the environment. This paper aims to study the use of membrane processes to concentrate wastewater to be then treated by a hydrothermal process such as wet air oxidation for advanced and intensified wastewater treatment. The work focused on three different synthetic wastewaters of public or industrial interest: pharmaceutical wastewater, grey wastewater, and bilge wastewater. Membrane processes operated at the pilot scale enabled retentions as high as 100% of total organic carbon, more than 99% of turbidity, and 70% of hydrocarbon, respectively. High concentration factors were obtained. Membrane foulings were chemically reversible whatever the type of wastewater or the membrane process. Thanks to membrane filtrations, the volumes to be treated by wet air oxidation were drastically reduced, leading to high energy savings. Membrane retentates were then treated by wet air oxidation (300°C, 15 MPa) and resulted in more than an 83% mineralization rate, regardless of the effluent. The hybrid intensified process presented in this work strongly increased the possibility of discharging into the environment by mixing the process outputs or greatly reducing the discharge volume and ultimately the waste load.
Chamaiporn Pinchai, Mathias Monnot, Sébastien Lefevre, Olivier Boutin, Philippe Moulin. Coupling membrane filtration and wet air oxidation for advanced wastewater treatment: Performance at the pilot scale and process intensification potential. Canadian Journal of Chemical Engineering, 2019, pp.1-10. ⟨10.1002/cjce.23688⟩. ⟨hal-02416179⟩
Martin Victor V Johansson, Fabrice Testa, Pierre Perrier, Jérôme Vicente, Jean Philippe Bonnet, et al.. Determination of an effective pore dimension for microporous media. International Journal of Heat and Mass Transfer, 2019, 142, pp.118412. ⟨10.1016/j.ijheatmasstransfer.2019.07.062⟩. ⟨hal-02196396⟩ Plus de détails...
The transient method of the mass flow rate and permeability measurements through a microporous media, developed previously, is used here to extract different characteristics of the media. By implementing the model of porous media as a bundle of capillaries the effective pore dimension is extracted from the measurements, and its physical interpretation is given. This methodology shows promising results to be used as a non-destructive method of micro-and-nanoporous media analysis. The permeability is also extracted directly from the measurements of the pressure variation in time. By using additional information about the sample porosity, the number of capillaries, the tortuosity and the internal surface of the sample are calculated. The extracted values are very close to that obtained by the mercury porosimetry and by microtomography.
Martin Victor V Johansson, Fabrice Testa, Pierre Perrier, Jérôme Vicente, Jean Philippe Bonnet, et al.. Determination of an effective pore dimension for microporous media. International Journal of Heat and Mass Transfer, 2019, 142, pp.118412. ⟨10.1016/j.ijheatmasstransfer.2019.07.062⟩. ⟨hal-02196396⟩
Journal: International Journal of Heat and Mass Transfer
Xueru Yan, Stéphane Anguille, Marc Bendahan, Philippe Moulin. Ionic liquids combined with membrane separation processes: A review. Separation and Purification Technology, Elsevier, 2019, 222, pp.230-253. ⟨10.1016/j.seppur.2019.03.103⟩. ⟨hal-02119807⟩ Plus de détails...
Xueru Yan, Stéphane Anguille, Marc Bendahan, Philippe Moulin. Ionic liquids combined with membrane separation processes: A review. Separation and Purification Technology, 2019, 222, pp.230-253. ⟨10.1016/j.seppur.2019.03.103⟩. ⟨hal-02119807⟩ Plus de détails...
Thomas La Rocca, Emilie Carretier, Didier Dhaler, Eric Louradour, Thien Truong, et al.. Purification of Pharmaceutical Solvents by Pervaporation through Hybrid Silica Membranes. Membranes, 2019, 9 (7), pp.76. ⟨10.3390/membranes9070076⟩. ⟨hal-02335018⟩ Plus de détails...
Solvents purification mainly used in pharmaceutical field such as acetone and methyl ethyl ketone (MEK) were performed through hybrid silica membranes and from binary and multi-components mixtures. Two hybrid silica membranes—zirconia doped bis(triethoxysilyl)methane and bis(triethoxysilyl)ethane (BTESE)—were studied. Flux, permeance, and separation factor were evaluated depending on temperature, composition, and number of organic compounds in the feed. Dehydration tests of acetone were operated at 30 and 45 °C following by acetone and MEK purification at 50 °C from multi-components hydro-organic mixtures where hydrophilic compounds (water, methanol) but also hydrophobic (dichloromethane (DCM) and/or toluene) were present. Results showed that the presence of Zr nanoparticles affected flux and improved selectivity in the case of dehydration. Experiments related to acetone and MEK purification, revealed a mass transfer alteration and a decrease of performance, from 99 to 97 wt% and from 98 to 95 wt% respectively, when the number of compounds in the initial feed grown up and more precisely, in the presence of DCM and toluene thus highlighting a possible coupling effect.
Thomas La Rocca, Emilie Carretier, Didier Dhaler, Eric Louradour, Thien Truong, et al.. Purification of Pharmaceutical Solvents by Pervaporation through Hybrid Silica Membranes. Membranes, 2019, 9 (7), pp.76. ⟨10.3390/membranes9070076⟩. ⟨hal-02335018⟩
Xueru Yan, Alexandre Favard, Stéphane Anguille, Marc Bendahan, Philippe Moulin. Effects of Operating Parameters on Ionic Liquid Membrane to Remove Humidity in a Green Continuous Process. Membranes, 2019, 9 (5), pp.65. ⟨10.3390/membranes9050065⟩. ⟨hal-02335020⟩ Plus de détails...
Membrane processes are promising methods to separate gases from feed streams without phase changing. A hybrid process, the combination of ionic liquids with a ceramic membrane (ILM), has been developed for humidity removal in a green continuous process. This new concept provides a more efficient and available ionic liquid (IL)-based membrane regeneration process, which just switches the moist feed stream to dry air. Furthermore, the ILM presents high stability and mechanical resistance during long-time operation. In addition, the influences of several operating parameters, including flow rate, temperature, absolute pressure, and feed concentration on process efficiency were investigated. The lower inlet flow rate was found to be favorable for drying humid air. Moreover, when the pressure increased, the mass of absorbed water was increased, while the feed concentration had no significant effects on the membrane separation performance. However, the operating temperature had a great effect on humidity removal. It is necessary to note that the processes at room temperature can limit the energy consumption. The absorbing process of ILM remained efficient after several absorption desorption cycles. Therefore, the new ILM hybrid process that has been developed has great potential for consecutive humidity removal processes.
Xueru Yan, Alexandre Favard, Stéphane Anguille, Marc Bendahan, Philippe Moulin. Effects of Operating Parameters on Ionic Liquid Membrane to Remove Humidity in a Green Continuous Process. Membranes, 2019, 9 (5), pp.65. ⟨10.3390/membranes9050065⟩. ⟨hal-02335020⟩
Cristian Barca, Mathieu Martino, Pierre Hennebert, Nicolas Roche. Kinetics and capacity of phosphorus extraction from solid residues obtained from wet air oxidation of sewage sludge. Waste Management, Elsevier, 2019, 89, pp.275-283. ⟨10.1016/j.wasman.2019.04.024⟩. ⟨hal-02118222⟩ Plus de détails...
Solid residues from thermal treatments of sewage sludge (SS) represent a valuable source of phosphorus (P) for the fertilizer production. This study aims at evaluating the P recovery potential from solid residues obtained from wet air oxidation of SS under subcritical water conditions (WAO residues). A series of P extraction experiments was performed by acidic and alkaline leaching at different liquid to solid ratios. Hot chemical extractions and P fractionations were also carried out to characterize the chemical composition of the WAO residues. The main objectives of this work were to determine the best operating conditions for P extraction, and to describe and understand the kinetics and the main mechanisms leading to P release. The results obtained in this study indicate that 1 M citric acid and 1 M HCl at the liquid to solid ratio of 10 L/kg can extract 61% and 65% of the total P content after 2 h of contact time at room temperature, thus giving P extraction capacities of 81 and 86 g P/kg WAO residues, respectively. The analysis of kinetic data indicates that P extraction with 1 M HCl is faster, but 1 M citric acid can give higher P extraction efficiencies at the equilibrium. The molar ratios of Ca to P of the leachates suggest that P extraction from WAO residues was primarily due to the dissolution of a mixture of various Ca-P complexes. (C) 2019 Elsevier Ltd. All rights reserved.
Cristian Barca, Mathieu Martino, Pierre Hennebert, Nicolas Roche. Kinetics and capacity of phosphorus extraction from solid residues obtained from wet air oxidation of sewage sludge. Waste Management, Elsevier, 2019, 89, pp.275-283. ⟨10.1016/j.wasman.2019.04.024⟩. ⟨hal-02118222⟩
Clémence Cordier, Lisa Charpin, Christophe Stavrakakis, Mathias Papin, Killian Guyomard, et al.. Ultrafiltration: A solution to recycle the breeding waters in shellfish production. Aquaculture, 2019, 504, pp.30-38. ⟨10.1016/j.aquaculture.2019.01.045⟩. ⟨hal-02177016⟩ Plus de détails...
Shellfish profession is jeopardized by water quality problem that concerns inlet, with the need to protect the animals from pathogens contaminations, and effluents potentially harmful for the environment with the presence of pathogens, nutrients or organic matter. In this study, ultrafiltration was tested to answer these issues. The objective of the work was two-fold: (i) treat a real effluent from an oyster breeding, the pilot had to continuously face a water containing organic matter and pathogens and (ii) use ultrafiltered water to feed an oyster spat. The process was proved to be efficient in terms of total suspended solids (TSS) and bacterial retention, and especially for Vibrio bacteria, some of whom are potentially harmful for shells. The sustainability of the process facing this pollution was demonstrated and thus for different filtration conditions. Indeed, backwashes and air-backwashes performed were efficient enough to control the fouling generated, so a chemical cleaning was necessary about every 12 h. Water quality parameters, physico-chemical and bacterial, of ultrafiltered effluents were similar to the one obtained with a classical seawater used to feed oyster spats. Ultrafiltration was efficient to treat an effluent from oyster farm and produce water allowing the grown of juveniles. This process could be a solution to reuse effluents in shellfish farms.
Clémence Cordier, Lisa Charpin, Christophe Stavrakakis, Mathias Papin, Killian Guyomard, et al.. Ultrafiltration: A solution to recycle the breeding waters in shellfish production. Aquaculture, 2019, 504, pp.30-38. ⟨10.1016/j.aquaculture.2019.01.045⟩. ⟨hal-02177016⟩
Clémence Cordier, Lisa Charpin, Christophe Stavrakakis, Mathias Papin, Killian Guyomard, et al.. Ultrafiltration: A solution to recycle the breeding waters in shellfish production. Aquaculture, Elsevier, 2019, 504, pp.30-38. ⟨10.1016/j.aquaculture.2019.01.045⟩. ⟨hal-02177016⟩ Plus de détails...
Shellfish profession is jeopardized by water quality problem that concerns inlet, with the need to protect the animals from pathogens contaminations, and effluents potentially harmful for the environment with the presence of pathogens, nutrients or organic matter. In this study, ultrafiltration was tested to answer these issues. The objective of the work was two-fold: (i) treat a real effluent from an oyster breeding, the pilot had to continuously face a water containing organic matter and pathogens and (ii) use ultrafiltered water to feed an oyster spat. The process was proved to be efficient in terms of total suspended solids (TSS) and bacterial retention, and especially for Vibrio bacteria, some of whom are potentially harmful for shells. The sustainability of the process facing this pollution was demonstrated and thus for different filtration conditions. Indeed, backwashes and air-backwashes performed were efficient enough to control the fouling generated, so a chemical cleaning was necessary about every 12 h. Water quality parameters, physico-chemical and bacterial, of ultrafiltered effluents were similar to the one obtained with a classical seawater used to feed oyster spats. Ultrafiltration was efficient to treat an effluent from oyster farm and produce water allowing the grown of juveniles. This process could be a solution to reuse effluents in shellfish farms.
Clémence Cordier, Lisa Charpin, Christophe Stavrakakis, Mathias Papin, Killian Guyomard, et al.. Ultrafiltration: A solution to recycle the breeding waters in shellfish production. Aquaculture, Elsevier, 2019, 504, pp.30-38. ⟨10.1016/j.aquaculture.2019.01.045⟩. ⟨hal-02177016⟩
Cristian Barca, Mathieu Martino, Pierre Hennebert, Nicolas Roche. Kinetics and capacity of phosphorus extraction from solid residues obtained from wet air oxidation of sewage sludge. Waste Management, 2019, 89, pp.275-283. ⟨10.1016/j.wasman.2019.04.024⟩. ⟨hal-02118222⟩ Plus de détails...
Solid residues from thermal treatments of sewage sludge (SS) represent a valuable source of phosphorus (P) for the fertilizer production. This study aims at evaluating the P recovery potential from solid residues obtained from wet air oxidation of SS under subcritical water conditions (WAO residues). A series of P extraction experiments was performed by acidic and alkaline leaching at different liquid to solid ratios. Hot chemical extractions and P fractionations were also carried out to characterize the chemical composition of the WAO residues. The main objectives of this work were to determine the best operating conditions for P extraction, and to describe and understand the kinetics and the main mechanisms leading to P release. The results obtained in this study indicate that 1 M citric acid and 1 M HCl at the liquid to solid ratio of 10 L/kg can extract 61% and 65% of the total P content after 2 h of contact time at room temperature, thus giving P extraction capacities of 81 and 86 g P/kg WAO residues, respectively. The analysis of kinetic data indicates that P extraction with 1 M HCl is faster, but 1 M citric acid can give higher P extraction efficiencies at the equilibrium. The molar ratios of Ca to P of the leachates suggest that P extraction from WAO residues was primarily due to the dissolution of a mixture of various Ca-P complexes. (C) 2019 Elsevier Ltd. All rights reserved.
Cristian Barca, Mathieu Martino, Pierre Hennebert, Nicolas Roche. Kinetics and capacity of phosphorus extraction from solid residues obtained from wet air oxidation of sewage sludge. Waste Management, 2019, 89, pp.275-283. ⟨10.1016/j.wasman.2019.04.024⟩. ⟨hal-02118222⟩
Maud Villain-Gambier, Isabelle Bourven, Gilles Guibaud, Benoît Marrot. Influence of proteins and humic-like substances from soluble microbial products on membrane bioreactor fouling under normal and stress conditions. Process Biochemistry, Elsevier, 2019, 78, pp.140-147. ⟨10.1016/j.procbio.2019.01.012⟩. ⟨hal-02176976⟩ Plus de détails...
Soluble microbial products are one of the major fouling agents in membrane bioreactor (MBR). It is accepted that high molecular weights polysaccharides are the main contributors to membrane fouling but the presence in bulk solution of proteins and humic-like substances make fouling layer more complex. To better understand the role of both components in fouling establishment, they were quantified and characterized in bioreactor and permeate under various operating conditions (sludge retention time (SRT), synthetic or real wastewater (SWW or RWW), rapid variation of food to microorganisms (F/M) ratio). With SWW at hydraulic retention time (HRT) of 24 h, a larger part of proteins possessing small molecular weights (< 1 kDa) were obtained with increasing SRT from 20 to 50 d. At 50 d, these proteins present better retention (93%) and could participate in lowering gel layer porosity. MBR operating at SRT of 20 d was then preferable. At respective SRT and HRT of 50 d and 24 h with SWW, F/M ratio decrease (from 0.2 to 0.1 kg (COD).kg(MLVSS)(-1).d(-1) during 24 h) provoked implementation of a compact fouling layer which provoked a high TMP increase (0.83 kPa.h(-1)). Biodegradation of proteins involved in bio clusters structures were implied in this phenomenon.
Maud Villain-Gambier, Isabelle Bourven, Gilles Guibaud, Benoît Marrot. Influence of proteins and humic-like substances from soluble microbial products on membrane bioreactor fouling under normal and stress conditions. Process Biochemistry, Elsevier, 2019, 78, pp.140-147. ⟨10.1016/j.procbio.2019.01.012⟩. ⟨hal-02176976⟩
Maud Villain-Gambier, Isabelle Bourven, Gilles Guibaud, Benoît Marrot. Influence of proteins and humic-like substances from soluble microbial products on membrane bioreactor fouling under normal and stress conditions. Process Biochemistry, 2019, 78, pp.140-147. ⟨10.1016/j.procbio.2019.01.012⟩. ⟨hal-02176976⟩ Plus de détails...
Soluble microbial products are one of the major fouling agents in membrane bioreactor (MBR). It is accepted that high molecular weights polysaccharides are the main contributors to membrane fouling but the presence in bulk solution of proteins and humic-like substances make fouling layer more complex. To better understand the role of both components in fouling establishment, they were quantified and characterized in bioreactor and permeate under various operating conditions (sludge retention time (SRT), synthetic or real wastewater (SWW or RWW), rapid variation of food to microorganisms (F/M) ratio). With SWW at hydraulic retention time (HRT) of 24 h, a larger part of proteins possessing small molecular weights (< 1 kDa) were obtained with increasing SRT from 20 to 50 d. At 50 d, these proteins present better retention (93%) and could participate in lowering gel layer porosity. MBR operating at SRT of 20 d was then preferable. At respective SRT and HRT of 50 d and 24 h with SWW, F/M ratio decrease (from 0.2 to 0.1 kg (COD).kg(MLVSS)(-1).d(-1) during 24 h) provoked implementation of a compact fouling layer which provoked a high TMP increase (0.83 kPa.h(-1)). Biodegradation of proteins involved in bio clusters structures were implied in this phenomenon.
Maud Villain-Gambier, Isabelle Bourven, Gilles Guibaud, Benoît Marrot. Influence of proteins and humic-like substances from soluble microbial products on membrane bioreactor fouling under normal and stress conditions. Process Biochemistry, 2019, 78, pp.140-147. ⟨10.1016/j.procbio.2019.01.012⟩. ⟨hal-02176976⟩
Clémence Cordier, Christophe Stavrakakis, Béatrice Dupuy, Mathias Papin, Patrick Sauvade, et al.. Ultrafiltration for environment safety in shellfish production: removal of oyster gametes in hatchery effluents. Aquacultural Engineering, 2019, 84, pp.80-90. ⟨10.1016/j.aquaeng.2018.12.008⟩. ⟨hal-01964883⟩ Plus de détails...
Triploid oysters are favoured by the aquaculture industry because of their sterility, which results in two advantages: a faster growth than natural oysters and a constant quality throughout all the year, which is attractive for consumers. In France, these oysters are mainly produced by mating natural and tetraploid oysters whose production poses a risk for marine environmental biodiversity if biological material is released into the environment. Therefore, effluents from farms which could produce those kinds of oysters must be treated. The objective of this work was to treat shellfish hatchery effluents by ultrafiltration. The retention of gametes by the membrane, was validated for different scenario, 5 log removals were obtained, and their viability was evaluated after treatment highlighting a destruction of these species after air-backwash. The sustainability of the process facing this organic pollution on the duration of each test but also on the period of the study was demonstrated. A protection of the marine environment biodiversity is obtained with ultrafiltration processes.
Clémence Cordier, Christophe Stavrakakis, Béatrice Dupuy, Mathias Papin, Patrick Sauvade, et al.. Ultrafiltration for environment safety in shellfish production: removal of oyster gametes in hatchery effluents. Aquacultural Engineering, 2019, 84, pp.80-90. ⟨10.1016/j.aquaeng.2018.12.008⟩. ⟨hal-01964883⟩
Clémence Cordier, Lisa Charpin, Christophe Stavrakakis, Mathias Papin, Killian Guyomard, et al.. Ultrafiltration: A solution to recycle the breeding waters in shellfish production. Aquaculture, 2019. ⟨hal-01993324⟩ Plus de détails...
Clémence Cordier, Lisa Charpin, Christophe Stavrakakis, Mathias Papin, Killian Guyomard, et al.. Ultrafiltration: A solution to recycle the breeding waters in shellfish production. Aquaculture, 2019. ⟨hal-01993324⟩
Thomas La Rocca, Emilie Carretier, Didier Dhaler, Eric Louradour, Thien Truong, et al.. Purification of Pharmaceutical Solvents by Pervaporation through Hybrid Silica Membranes. Membranes, 2019, 9 (7), pp.76. ⟨10.3390/membranes9070076⟩. ⟨hal-02335018⟩ Plus de détails...
Solvents purification mainly used in pharmaceutical field such as acetone and methyl ethyl ketone (MEK) were performed through hybrid silica membranes and from binary and multi-components mixtures. Two hybrid silica membranes—zirconia doped bis(triethoxysilyl)methane and bis(triethoxysilyl)ethane (BTESE)—were studied. Flux, permeance, and separation factor were evaluated depending on temperature, composition, and number of organic compounds in the feed. Dehydration tests of acetone were operated at 30 and 45 °C following by acetone and MEK purification at 50 °C from multi-components hydro-organic mixtures where hydrophilic compounds (water, methanol) but also hydrophobic (dichloromethane (DCM) and/or toluene) were present. Results showed that the presence of Zr nanoparticles affected flux and improved selectivity in the case of dehydration. Experiments related to acetone and MEK purification, revealed a mass transfer alteration and a decrease of performance, from 99 to 97 wt% and from 98 to 95 wt% respectively, when the number of compounds in the initial feed grown up and more precisely, in the presence of DCM and toluene thus highlighting a possible coupling effect.
Thomas La Rocca, Emilie Carretier, Didier Dhaler, Eric Louradour, Thien Truong, et al.. Purification of Pharmaceutical Solvents by Pervaporation through Hybrid Silica Membranes. Membranes, 2019, 9 (7), pp.76. ⟨10.3390/membranes9070076⟩. ⟨hal-02335018⟩
Xueru Yan, Alexandre Favard, Stéphane Anguille, Marc Bendahan, Philippe Moulin. Effects of Operating Parameters on Ionic Liquid Membrane to Remove Humidity in a Green Continuous Process. Membranes, 2019, 9 (5), pp.65. ⟨10.3390/membranes9050065⟩. ⟨hal-02335020⟩ Plus de détails...
Membrane processes are promising methods to separate gases from feed streams without phase changing. A hybrid process, the combination of ionic liquids with a ceramic membrane (ILM), has been developed for humidity removal in a green continuous process. This new concept provides a more efficient and available ionic liquid (IL)-based membrane regeneration process, which just switches the moist feed stream to dry air. Furthermore, the ILM presents high stability and mechanical resistance during long-time operation. In addition, the influences of several operating parameters, including flow rate, temperature, absolute pressure, and feed concentration on process efficiency were investigated. The lower inlet flow rate was found to be favorable for drying humid air. Moreover, when the pressure increased, the mass of absorbed water was increased, while the feed concentration had no significant effects on the membrane separation performance. However, the operating temperature had a great effect on humidity removal. It is necessary to note that the processes at room temperature can limit the energy consumption. The absorbing process of ILM remained efficient after several absorption desorption cycles. Therefore, the new ILM hybrid process that has been developed has great potential for consecutive humidity removal processes.
Xueru Yan, Alexandre Favard, Stéphane Anguille, Marc Bendahan, Philippe Moulin. Effects of Operating Parameters on Ionic Liquid Membrane to Remove Humidity in a Green Continuous Process. Membranes, 2019, 9 (5), pp.65. ⟨10.3390/membranes9050065⟩. ⟨hal-02335020⟩
Julie Guilbaud, Yvan Wyart, Philippe Moulin. Economic viability of treating ballast water of ships by ultrafiltration as a function of the process position. Journal of Marine Science and Technology, 2018. ⟨hal-01956600⟩ Plus de détails...
Julie Guilbaud, Yvan Wyart, Philippe Moulin. Economic viability of treating ballast water of ships by ultrafiltration as a function of the process position. Journal of Marine Science and Technology, 2018. ⟨hal-01956600⟩
Sébastien Clercq, Adil Mouahid, Pèpe Gérard, Elisabeth Badens. Investigation of crystallization mechanisms for polymorphic and habit control from the Supercritical AntiSolvent process. Journal of Supercritical Fluids, 2018, 141, pp.29-38. ⟨10.1016/j.supflu.2017.11.025⟩. ⟨hal-02113962⟩ Plus de détails...
In this work, the Supercritical AntiSolvent (SAS) process has been used to generate micronized crystals of Sulfathiazole (STZ) from different organic solutions, namely acetone, acetonitrile, tetrahydrofuran and acetic acid. The flow rates of CO2 (2–21 g min−1) and of the organic solution (0.19–6 mL min−1), as well as STZ concentration in the organic solution (20–70% under the saturation), have been varied to identify the conditions leading to powders exhibiting only one polymorphic form. Pressure (10 MPa) and temperature (313 K) have been kept constant. In this paper, thermodynamic and hydrodynamic aspects are discussed so as to rationalize the obtained crystal characteristics and provide a new way to control the SAS process applied to drug pre-formulation. The influence of the organic solvent nature on both the polymorphic form and the habit of generated crystals, has been particularly discussed.
Sébastien Clercq, Adil Mouahid, Pèpe Gérard, Elisabeth Badens. Investigation of crystallization mechanisms for polymorphic and habit control from the Supercritical AntiSolvent process. Journal of Supercritical Fluids, 2018, 141, pp.29-38. ⟨10.1016/j.supflu.2017.11.025⟩. ⟨hal-02113962⟩
Clémence Cordier, Christophe Stavrakakis, Patrick Sauvade, Franz Coelho, Philippe Moulin. Air Backwash Efficiency on Organic Fouling of UF Membranes Applied to Shellfish Hatchery Effluents. Membranes, 2018, 8 (3), ⟨10.3390/membranes8030048⟩. ⟨hal-01887993⟩ Plus de détails...
Among all the techniques studied to overcome fouling generated in dead-end filtration, the injection of air during backwashes proved to be the most effective. Indeed, shear stress engendered by the two-phase flow enhanced particle removal on membrane surface. This work aims to study the injection of air to drain the membranes before backwash. Firstly, the efficiency of this backwash procedure was evaluated during the ultrafiltration of seawater on a semi industrial pilot plant using different operating conditions. Then, the treatment of seawater, doped with oyster gametes to simulate the filtration of shellfish hatchery effluents, was performed to confirm the hydraulic performance of the air backwash. Indeed, the release of gametes, expulsed by exotic bivalves in the natural environment, could be a risk for the biodiversity preservation. The impact of air backwash on the integrity of oocytes and spermatozoa was identified using flow cytometry and microscopic analyses. When oyster gametes were added, their retention by ultrafiltration was validated. The impact of air backwash on these species viability was a significant information point for the implementation of this process on shellfish production farms.
Clémence Cordier, Christophe Stavrakakis, Patrick Sauvade, Franz Coelho, Philippe Moulin. Air Backwash Efficiency on Organic Fouling of UF Membranes Applied to Shellfish Hatchery Effluents. Membranes, 2018, 8 (3), ⟨10.3390/membranes8030048⟩. ⟨hal-01887993⟩
Clémence Cordier, Christophe Stavrakakis, Patrick Sauvade, Franz Coelho, Philippe Moulin. Air Backwash Efficiency on Organic Fouling of UF Membranes Applied to Shellfish Hatchery Effluents. Membranes, 2018, 8 (3), ⟨10.3390/membranes8030048⟩. ⟨hal-01887993⟩ Plus de détails...
Clémence Cordier, Christophe Stavrakakis, Patrick Sauvade, Franz Coelho, Philippe Moulin. Air Backwash Efficiency on Organic Fouling of UF Membranes Applied to Shellfish Hatchery Effluents. Membranes, 2018, 8 (3), ⟨10.3390/membranes8030048⟩. ⟨hal-01887993⟩
Thomas La Rocca, Emilie Carretier, Thomas Clair, Martial Etienne, Philippe Moulin. On-Line NIR to Regulate Pervaporation Process: Application for Dehydration. Membranes, 2018, 8 (3), pp.74. ⟨hal-01947010⟩ Plus de détails...
The regeneration of volatile organic solvents via dehydration tests, from 90 wt %, was evaluated by pervaporation using an on-line near-infrared (NIR) spectrometer. Experiments were performed using a bis(triethoxysilyl)methane (BTESM)-based ceramic HybSi((R)) membrane at temperatures of 20, 30 and 40 degrees C. The presence of an on-line NIR allows continuous monitoring of the process without sampling, and quickly estimates mass fractions of species in the retentate. Dehydration tests were performed at 30 degrees C in order to confirm the on-line NIR reproducibility, and closely matched results obtained with an off-line densimeter. These results validated the usefulness of the on-line NIR and provided the same precision whatever the mass fraction in the retentate. A good on-line reproducibility was found, with an agreement between the on-line NIR and off-line densimeter, obtaining an average deviation of +/- 0.058 wt %, +/- 0.17 wt % and +/- 0.049 wt %, respectively, at 20, 30 and 40 degrees C.
Thomas La Rocca, Emilie Carretier, Thomas Clair, Martial Etienne, Philippe Moulin. On-Line NIR to Regulate Pervaporation Process: Application for Dehydration. Membranes, 2018, 8 (3), pp.74. ⟨hal-01947010⟩
Yannick Manon, Yvan Wyart, Angélique Fabre, Anne Brehant, Reynald Bonnard, et al.. Development of a new method for measuring the abrasive potential of water: risk of membrane failure in water treatment plants. Water Science and Technology, 2018, 77 (12), pp.2781-2793. ⟨10.2166/wst.2018.266⟩. ⟨hal-02114559⟩ Plus de détails...
The objectives of this study were to develop an analytical method to distinguish feed water used to produce drinking water, with varying concentrations of suspended solids, in terms of abrasiveness and to define an index that can assess the abrasive potential of the feed water coming in contact with a polymeric membrane. For such process configurations, membrane abrasion has been identified as one of the most recurring and major concerns in operation because the polymeric materials used in treatment plants are relatively sensitive to abrasion. Five different types of apparatus were benchmarked and were evaluated on their ability to be adapted to particles commonly found in most drinking water treatment plants at low concentrations. After comparing 10 criteria, the MCR302 with a tribological cell of Anton Paar was identified as the most relevant device. For the selected tool (MCR302), a statistical approach was used to provide a safe and robust ranking of the abrasive potential of the different types of water. An analysis of variance allowed the origin of the result variability to be explained. The newly developed methodology enables quantification of the abrasive potential of natural waters used for membrane filtration with a relevance of ranking higher than 90%.
Yannick Manon, Yvan Wyart, Angélique Fabre, Anne Brehant, Reynald Bonnard, et al.. Development of a new method for measuring the abrasive potential of water: risk of membrane failure in water treatment plants. Water Science and Technology, 2018, 77 (12), pp.2781-2793. ⟨10.2166/wst.2018.266⟩. ⟨hal-02114559⟩
Y. Jaouad, M. Villain-Gambier, L. Mandi, B. Marrot, N. Ouazzani. Key process parameters involved in the treatment of olive mill wastewater by membrane bioreactor. Environmental Technology, 2018, 40 (24), pp.3162-3175. ⟨10.1080/09593330.2018.1464064⟩. ⟨hal-02467998⟩ Plus de détails...
The Olive Mill Wastewater (OMWW) biodegradation in an external ceramic membrane bioreactor (MBR) was investigated with a starting acclimation step with a Ultrafiltration (UF) membrane (150 kDa) and no sludge discharge in order to develop a specific biomass adapted to OMWW biodegradation. After acclimation step, UF was replaced by an Microfiltration (MF) membrane (0.1 mu m). Sludge Retention Time (SRT) was set around 25 days and Food to Microorganisms ratio (F/M) was fixed at 0.2 kg(COD) kg(MLVSS)(-1) d(-1). At stable state, removal of the main phenolic compounds (hydroxytyrosol and tyrosol) and Chemical Oxygen Demand (COD) were successfully reached (95% both). Considered as a predominant fouling factor, but never quantified in MBR treated OMWW, Soluble Microbial Products (SMP) proteins, polysaccharides and humic substances concentrations were determined (80, 110 and 360 mg L-1 respectively). At the same time, fouling was easily managed due to favourable hydraulic conditions of external ceramic MBR. Therefore, OMWW could be efficiently and durably treated by an MF MBR process under adapted operating parameters.
Y. Jaouad, M. Villain-Gambier, L. Mandi, B. Marrot, N. Ouazzani. Key process parameters involved in the treatment of olive mill wastewater by membrane bioreactor. Environmental Technology, 2018, 40 (24), pp.3162-3175. ⟨10.1080/09593330.2018.1464064⟩. ⟨hal-02467998⟩
Pierre Hamon, Philippe Moulin, Lionel Ercolei, Benoit Marrot. Oncological ward wastewater treatment by membrane bioreactor: Acclimation feasibility and pharmaceuticals removal performances. Journal of Water Process Engineering, 2018, 21, pp.9-26. ⟨10.1016/j.jwpe.2017.11.012⟩. ⟨hal-02114276⟩ Plus de détails...
Discharges of care, analyses and research activities from hospital wards are the source of the specificity of hospital effluents because they contain, among others, drug residues, detergents and disinfectants. Even if hospitals represent a small fraction of the total drug load discharged into the environment, below 10% for drugs, the characterization of this specific effluent shows that global pollution is 2-3 times more concentrated than urban wastewater. Moreover this ratio increases to 150 times for some micropollutants. Activated sludge ac-climation in 2 membrane bioreactor (MBR) configurations (external and external submerged) to effluents from an oncological ward will be studied monitoring the performances on conventional pollution parameters (che-mical oxygen demand, ammonium, total suspended solids etc.). The performances of drug degradation are compared with the data of the literature and with degradation tests in batch reactor with no acclimated biomass from a municipal wastewater treatment plant. The results are achieved for effluents with a high concentration of drug molecules, up to 6.82 mg L −1 for ifosfamide. The treatment allows the development of enhanced purification efficiencies on drug molecules and confirms the choice of a MBR process to treat this effluent, although the simultaneous presence of the various compounds leads to a complex biological response. Indeed, 5-FU was eliminated almost systematically over 90%. Sulfamethoxazole and codeine can be significantly eliminated biologically, respectively to 79 and 95%. IF and CP removal in the reactor appeared more moderate since it does not exceed 40% but membrane fouling led to higher removals of both molecules.
Pierre Hamon, Philippe Moulin, Lionel Ercolei, Benoit Marrot. Oncological ward wastewater treatment by membrane bioreactor: Acclimation feasibility and pharmaceuticals removal performances. Journal of Water Process Engineering, 2018, 21, pp.9-26. ⟨10.1016/j.jwpe.2017.11.012⟩. ⟨hal-02114276⟩
Pierre Hamon, Philippe Moulin, Lionel Ercolei, Benoit Marrot. Performance of a biomass adapted to oncological ward wastewater vs. biomass from municipal WWTP on the removal of pharmaceutical molecules. Water Research, 2018, 128, pp.193 - 205. ⟨10.1016/j.watres.2017.10.037⟩. ⟨hal-02114290⟩ Plus de détails...
The performance of a biomass adapted to Oncological Ward Wastewater (OWW) in a membrane bioreactor (MBR) was compared with that of a municipal WWTP, on the removal of pharmaceutical molecules and more specifically on their overall resistance and purifying ability in the presence of pharmaceutical cocktails. Sorption and biotransformation mechanisms on two antineoplastics, one antibiotic and a painkiller were evaluated. Sludge acclimated to OWW allowed for a 34% increase in the removal rate and in the minimum inhibition concentration. The percentage of the amounts of specific pharmaceutical compounds removed by biotransformation or by sorption were measured. These results are positive, as they show that the observed removal of pharmaceutical molecules by biomass acclimated to OWW can mostly be attributed to developed biotransformation, unlike the biomass from the municipal WWTP for which sorption is sometimes the only removal mechanism. The biotransformation kinetic and the solid-water distribution coefficients in this study show good agreement with literature data, even for much higher pharmaceutical concentrations in OWW.
Pierre Hamon, Philippe Moulin, Lionel Ercolei, Benoit Marrot. Performance of a biomass adapted to oncological ward wastewater vs. biomass from municipal WWTP on the removal of pharmaceutical molecules. Water Research, 2018, 128, pp.193 - 205. ⟨10.1016/j.watres.2017.10.037⟩. ⟨hal-02114290⟩
Philippe Moulin, Alexandre Favard, Marc Bendahan, Yan Xueru, Stéphane Anguille, et al.. Ionic liquids filter for humidity effect reduction on metal oxide gas sensor response. Sensors & Transducers., 2018. ⟨hal-01888014⟩ Plus de détails...
Philippe Moulin, Alexandre Favard, Marc Bendahan, Yan Xueru, Stéphane Anguille, et al.. Ionic liquids filter for humidity effect reduction on metal oxide gas sensor response. Sensors & Transducers., 2018. ⟨hal-01888014⟩
Julie Guilbaud, Yvan Wyart, Klaas Kaag, Philippe Moulin. Comparison of seawater and freshwater ultrafiltration on semi-industrial scale: ballast water treatment application. Journal of Membrane Science and Research, In press. ⟨hal-01789024⟩ Plus de détails...
Non-native aquatic species can be introduced in new areas through emptying of the ballast tanks, with a high impact on health, economy and environment. This is considered by the International Maritime Organization (IMO): (i) in 2004, the IMO adopted the International Convention for the Control and Management of Ships' Ballast Water and Sediments (BMW Convention) in order to diminish the risk of introducing harmful and/or potentially invasive species through ballast water. (ii) the BWM Convention entered into force on 8 September 2017 and could opens a new market for ballast water treatment. The aim for industry is to operate with an acceptable fouling rate between cleaning steps. Indeed, if fouling rates are low, clean in place will be infrequent. The aim of this work is to develop a sustainable ultrafiltration system designed for ballast water treatment and the first step is to have a better understanding of membrane fouling in relation to intake water variations. The major contribution and novelty of this study is successful ballast water treatment using an ultrafiltration process at industrial scale a high technological readiness level in order to show the applicability of the ultrafiltration processes for the ballast water treatment. In this study operating conditions were determined for seawater and freshwater conditions.
Julie Guilbaud, Yvan Wyart, Klaas Kaag, Philippe Moulin. Comparison of seawater and freshwater ultrafiltration on semi-industrial scale: ballast water treatment application. Journal of Membrane Science and Research, In press. ⟨hal-01789024⟩
Morgane Le Hir, Yvan Wyart, Gaëlle Georges, Laure Siozade Lamoine, Patrick Sauvade, et al.. Effect of salinity and nanoparticle polydispersity on UF membrane retention fouling. Journal of Membrane Science, 2018, 563, pp.405-418. ⟨10.1016/j.memsci.2018.05.077⟩. ⟨hal-02114445⟩ Plus de détails...
In this study, the retention potential and the fouling of ultrafiltration (UF) multichannel hollow fiber membrane regarding nanoparticles (NPs) have been assessed. Filtration experiments of fluorescent 10 nm and 1.5 nm NPs (respectively NP-10 and NP-1.5) suspensions filtered individually were carried out under different transmembrane pressures. A complexification of the feed suspension through the mix of NPs sizes and/or the salinity adding have been investigated. The retention rate (RR), the fouling location and the membrane productivity have been analyzed and compared in each case to determine the influence of salinity and polydispersity of the feed suspensions on NP retention. Results show that RR of NP-10 stays constant when NPs are filtered in ideal suspension (NP-10/ultrapure water), or when they are filtered with NP-1.5 and/or with 50 mmol L-1 of NaCl and reaches at least 99%. However, RR of NP-1.5 is modified by the presence of NP-10 and/or 50 mmol L-1 of NaCl. This retention rate is considerably decreased by the complexification of suspensions tested. Estimation of NPs quantity blocked at the membrane at the end of the filtration by mass balance showed no significative variation for NP-1.5 (relative to the RR obtained) while a larger quantity of NP-10 remained blocked at the membrane with the adding of NP-1.5 and/or salts in feed suspension. Location of NPs by Confocal Laser Scanning Microscopy (CLSM) at the end of the filtration showed that filtered individually, NP-10 are blocked in membrane skin and on membrane surface while NP-1.5 are blocked in the entire membrane material. Filtered simultaneously, the location of these two sizes of NPs is not modified but NP-1.5 seems to form clusters in the membrane material and the participation of NP-10 and NP-1.5 to the deposit formed on the membrane surface is increased. The adding of salinity leads to the same observations than the filtration of both sizes mixed.
Morgane Le Hir, Yvan Wyart, Gaëlle Georges, Laure Siozade Lamoine, Patrick Sauvade, et al.. Effect of salinity and nanoparticle polydispersity on UF membrane retention fouling. Journal of Membrane Science, 2018, 563, pp.405-418. ⟨10.1016/j.memsci.2018.05.077⟩. ⟨hal-02114445⟩
Martin Victor Johansson, Fabrice Testa, Imen Zaier, Pierre Perrier, Jean Philippe Bonnet, et al.. Mass flow rate and permeability measurements in microporous media. Vacuum, 2018, 158, pp.75-85. ⟨10.1016/j.vacuum.2018.09.030⟩. ⟨hal-01888007⟩ Plus de détails...
10 The transient method of the mass flow rate measurements through a microp-orous media is developed and analyzed. This method is based on the constant volume technique and the exponential fit of the pressure evolution in each tank which allows calculating the permeability directly. The pressure relaxation time, a single fitting parameter, is introduced and its behaviors are analyzed in a large pressure range. By measuring the pressure relaxation time for one gas, the per-meability of a microporous sample can be derived for the other gases. With the actual experimental setup, we measured the mass flow rate through the micro-porous media in the range 5 · 10 −7 − 5 · 10 −12 [kg s −1 ] and the permeability in the range 10 −14 − 10 −11 [m 2 ].
Martin Victor Johansson, Fabrice Testa, Imen Zaier, Pierre Perrier, Jean Philippe Bonnet, et al.. Mass flow rate and permeability measurements in microporous media. Vacuum, 2018, 158, pp.75-85. ⟨10.1016/j.vacuum.2018.09.030⟩. ⟨hal-01888007⟩
Morgane Le Hir, Yvan Wyart, Gaelle Georges, Laure Siozade, Philippe Moulin. Nanoparticles Retention Potential of Multichannel Hollow Fiber Drinking Water Production Membrane. Journal of Membrane Science and Research, 2018, 4 (2), pp.74-84. ⟨10.22079/JMSR.2017.69079.1150⟩. ⟨hal-01789032⟩ Plus de détails...
This study aims to investigate the potential of nanoparticle retention of ultrafi ltration (UF) multichannel hollow fiber membrane. Filtration experiments of fl uorescent silica nanoparticles (NPs) (10 and 100 nm) and CdTe quantum dots (1.5 nm) suspensions were carried out under diff erent operating conditions to analyze the retention rate (RT), the fouling zone and the membrane productivity. Fouling mechanism occurring during the experiment has been correlated with the distribution profi les of NPs obtained during the membrane autopsy after fi ltration by Confocal Laser Scanning Microscopy (CLSM). Results show that large NPs are totally retained on the membrane surface. Medium NPs pass through the membrane at the beginning of the fi ltration and are gradually stopped in the membrane skin before forming a deposit on the membrane surface. The retention rate of small NPs also increases over time and an in-depth fouling of the membrane (skin + support) has been identifi ed. Mass balance and determination of NPs surface deposit thickness, in the case of a filtration cake, determined by CLSM and scanning electron microscopy (SEM) allowed the estimation of NPs amount trapped in the membrane structure (skin or support) and have been compared to the fouling resistance observed during the filtration run. The CLSM analysis of the membrane on its section presents, in that study, a signifi cant interest because of the high accuracy of the measures: 538.16 nm compared to the 5000 nm reported in a previous study.
Morgane Le Hir, Yvan Wyart, Gaelle Georges, Laure Siozade, Philippe Moulin. Nanoparticles Retention Potential of Multichannel Hollow Fiber Drinking Water Production Membrane. Journal of Membrane Science and Research, 2018, 4 (2), pp.74-84. ⟨10.22079/JMSR.2017.69079.1150⟩. ⟨hal-01789032⟩
Philippe Moulin, Alexandre Favard, Marc Bendahan, Yan Xueru, Stéphane Anguille, et al.. Ionic liquids filter for humidity effect reduction on metal oxide gas sensor response. Sensors & Transducers., 2018. ⟨hal-01888014⟩ Plus de détails...
Philippe Moulin, Alexandre Favard, Marc Bendahan, Yan Xueru, Stéphane Anguille, et al.. Ionic liquids filter for humidity effect reduction on metal oxide gas sensor response. Sensors & Transducers., 2018. ⟨hal-01888014⟩
S.A. Toudji, Jean-Philippe Bonnet, J-L. Gardarein, Emilie Carretier. New experimental setup for continuous mass flux measurement in pervaporation. Chemical Engineering Research and Design, 2017, 124 (1), pp.252 - 259. ⟨10.1016/j.cherd.2017.06.029⟩. ⟨hal-01590253⟩ Plus de détails...
Pervaporation is a separation process of liquid mixtures through a thin non-porous membrane. In vacuum pervaporation, the global mass flux is classically estimated by weighing the mass of permeate collected in cold traps. In this work, we propose a new experimental setup that allows a continuous measurement of the mass flux. The new mass flux method measurement was validated for single component permeation (ethanol and water) by comparing mass of permeate collected in cold traps with the level decrease of feed liquid measured with a pressure sensor. This new setup can be useful for laboratory studies dealing with the evolution of mass flux according to different parameters of the process as, for example, the permeate side pressure level or temperature of liquid feed.
S.A. Toudji, Jean-Philippe Bonnet, J-L. Gardarein, Emilie Carretier. New experimental setup for continuous mass flux measurement in pervaporation. Chemical Engineering Research and Design, 2017, 124 (1), pp.252 - 259. ⟨10.1016/j.cherd.2017.06.029⟩. ⟨hal-01590253⟩
The current work aims to study the biomass behaviour in a continuous mode activated sludge system (ASS) treating olive mill wastewater (OMWW) through an increasing OMWW food to microorganism ration (F/M). To this end, the biomass growth, the specific oxygen uptake rate (SOUR), microbial characterization, sludge volume index (SVI) as well as COD and phenolic compounds removal efficiencies were examined over time. Results showed a successful growth of the biomass that reached 6.79 g(TSS) l(-1) and 5.42 g(VSS) l(-1). Its viability, its adaptability, and its good physiological activity were confirmed by the obtained result of SOUR with an average of 9.95 mg(O2)gV(SS)(-1)h(-1), as well as aerobic microbial population characterization in terms of aerobic revivable bacteria at 22 degrees C and 37 degrees C, Pseudomonas sp., mould and yeast and total fungi. The concentration of these strains characterized by their ability to degrade effectively COD and phenolic compounds increased significantly (p < .05) over time. This demonstrated a great promptness in response to the increasing OMWW mass ratio. For all treatment steps, removal efficiencies were high and reached 95% of COD and 93% of phenolic compounds, also the flocs settleability shown by SVI measurement was optimal.
Tawfik El Moussaoui, Yasamine Jaouad, Laila Mandi, Benoît Marrot, Naaila Ouazzani. Biomass behaviour in a conventional activated sludge system treating olive mill wastewater. Environmental Technology, 2017, 39 (2), pp.190 - 202. ⟨10.1080/09593330.2017.1296899⟩. ⟨hal-01816020⟩
Fabrice Testa, Clémence Coetsier, Emilie Carretier, M. Ennahali, Benoit Laborie, et al.. Reused of Slurry By Membrane Processes for Microelectronic Industry. Water today, 2017, 123, pp.311-320. ⟨hal-01656407⟩ Plus de détails...
Fabrice Testa, Clémence Coetsier, Emilie Carretier, M. Ennahali, Benoit Laborie, et al.. Reused of Slurry By Membrane Processes for Microelectronic Industry. Water today, 2017, 123, pp.311-320. ⟨hal-01656407⟩
Philippe Moulin. Drinking Water Production By Ultrafiltration: Mobile Technology Helps Fire Services. Water today, 2017, 11, pp.42-48. ⟨hal-01656401⟩ Plus de détails...
Philippe Moulin, Nicolas Combernoux, Luc Schrive, V. Labed, Y. Wyart, et al.. Treatment of Radioactive Liquid Effluents By Reverse Osmosis Membranes: From Lab-Scale to Pilot-Scale. Water Research, 2017, 123, pp.311-320. ⟨hal-01889583⟩ Plus de détails...
The recent use of the reverse osmosis (RO) process at the damaged Fukushima-Daiichi nuclear power plant generated a growing interest in the application of this process for decontamination purposes. This study focused on the development of a robust RO process for decontamination of two kinds of liquid effluents: a contaminated groundwater after a nuclear disaster and a contaminated seawater during a nuclear accident. The SW30 HR membrane was selected among other in this study due to higher retentions (96% for Cs and 98% for Sr) in a true groundwater. Significant fouling and scaling phenomenon, attributed to calcium and strontium precipitation, were evidenced in this work: this underscored the importance of the lab scale experiment in the process. Validation of the separation performances on trace radionuclides concentration was performed with similar retention around 96% between surrogates Cs (inactive) and 137Cs (radioactive). The scale up to a 2.6 m2 spiral wound membrane led to equivalent retentions (around 96% for Cs and 99% for Sr) but lower flux values: this underlined that the hydrodynamic parameters (flowrate/cross-flow velocity) should be optimized. This methodology was also applied on the reconstituted seawater effluent: retentions were slightly lower than for the groundwater and the same hydrodynamic effects were observed on the pilot scale. Then, ageing of the membrane through irradiation experiments were performed. Results showed that the membrane active layer composition influenced the membrane resistance towards γ irradiation: the SW30 HR membrane performances (retention and permeability) were better than the Osmonics SE at 1 MGy. Finally, to supplement the scale up approach, the irradiation of a spiral wound membrane revealed a limited effect on the permeability and retention. This indicated that irradiation conditions need to be controlled for a further development of the process.
Philippe Moulin, Nicolas Combernoux, Luc Schrive, V. Labed, Y. Wyart, et al.. Treatment of Radioactive Liquid Effluents By Reverse Osmosis Membranes: From Lab-Scale to Pilot-Scale. Water Research, 2017, 123, pp.311-320. ⟨hal-01889583⟩
Sophie Arénillas, Maryse Drouin, Emmanuel Monnin, Philippe Moulin. Glycerin Removal from Ultrafiltration Flat Sheet Membranes by Filtration and Soaking. Journal of Membrane Science and Research, 2017, 3 (2), pp.102 - 108. ⟨10.22079/jmsr.2016.23080⟩. ⟨hal-01647166⟩ Plus de détails...
In the case of pharmaceutical processes, the presence of preservatives can be problematic and the quantity is subject to stringent standards. So, the aim of this study is to quantify the removal of glycerin contained in ultrafiltration flat sheet membranes by filtration and soaking. This is carried out over a wide range of membranes with different characteristics. The selected flat sheet membranes (with a surface of 14.5 cm²) have a Molecular Weight Cut-Off (MWCO) ranging from 5 to 60 kDa. They are made of different organic materials (polyethersulfone, regenerated cellulose and etc.) and are manufactured by different suppliers (Millipore, Sartorius, GE Osmonics, Novasep, Pall). The density and therefore the glycerin concentration measurements are carried out in filtered distilled water (dead-end filtration) and distilled water of soaking (diffusion phenomenon). This study gives experi-mental information about the glycerin quantity as a function of membrane characteristics and the position of glycerin on the membrane (skin layer and support). The various studied parameters are the removal kinetic, the filtered volume, the filtration pressure and the contact time.
Sophie Arénillas, Maryse Drouin, Emmanuel Monnin, Philippe Moulin. Glycerin Removal from Ultrafiltration Flat Sheet Membranes by Filtration and Soaking. Journal of Membrane Science and Research, 2017, 3 (2), pp.102 - 108. ⟨10.22079/jmsr.2016.23080⟩. ⟨hal-01647166⟩
Nicolas Combernoux, L. Schrive, V. Labed, Yvan Wyart, Emilie Carretier, et al.. Treatment of radioactive liquid effluents by reverse osmosis membranes: From lab-scale to pilot-scale. Water today, 2017, 123, pp.311-320. ⟨10.1016/j.watres.2017.06.062⟩. ⟨hal-01656412⟩ Plus de détails...
The recent use of the reverse osmosis (RO) process at the damaged Fukushima-Daiichi nuclear power plant generated a growing interest in the application of this process for decontamination purposes. This study focused on the development of a robust RO process for decontamination of two kinds of liquid effluents: a contaminated groundwater after a nuclear disaster and a contaminated seawater during a nuclear accident. The SW30 HR membrane was selected among other in this study due to higher retentions (96% for Cs and 98% for Sr) in a true groundwater. Significant fouling and scaling phenomenon, attributed to calcium and strontium precipitation, were evidenced in this work: this underscored the importance of the lab scale experiment in the process. Validation of the separation performances on trace radionuclides concentration was performed with similar retention around 96% between surrogates Cs (inactive) and 137Cs (radioactive). The scale up to a 2.6 m2 spiral wound membrane led to equivalent retentions (around 96% for Cs and 99% for Sr) but lower flux values: this underlined that the hydrodynamic parameters (flowrate/cross-flow velocity) should be optimized. This methodology was also applied on the reconstituted seawater effluent: retentions were slightly lower than for the groundwater and the same hydrodynamic effects were observed on the pilot scale. Then, ageing of the membrane through irradiation experiments were performed. Results showed that the membrane active layer composition influenced the membrane resistance towards γ irradiation: the SW30 HR membrane performances (retention and permeability) were better than the Osmonics SE at 1 MGy. Finally, to supplement the scale up approach, the irradiation of a spiral wound membrane revealed a limited effect on the permeability and retention. This indicated that irradiation conditions need to be controlled for a further development of the process.
Nicolas Combernoux, L. Schrive, V. Labed, Yvan Wyart, Emilie Carretier, et al.. Treatment of radioactive liquid effluents by reverse osmosis membranes: From lab-scale to pilot-scale. Water today, 2017, 123, pp.311-320. ⟨10.1016/j.watres.2017.06.062⟩. ⟨hal-01656412⟩
Nicolas Combernoux, Luc Schrive, Véronique Labed, Yvan Wyart, Emilie Carretier, et al.. Irradiation effects on RO membranes: Comparison of aerobic and anaerobic conditions. Polymer Degradation and Stability, 2016, 134, pp.126-135. ⟨10.1016/j.polymdegradstab.2016.09.034⟩. ⟨hal-01461790⟩ Plus de détails...
In this study, the investigation of the degradation of polyamide composite reverse osmosis membrane under gamma irradiation was carried out in aerobic and anaerobic conditions. A gamma Co-60 source was used to reach irradiation doses ranging from 0.1 to 1 MGy, with a constant dose rate of 0.5 kGy h(-1). The RO membranes degradation was assessed using XPS and ATR-FTIR for the chemical modification of the membrane active layer. Ion chromatography, pH measurement and gas chromatography were also used to identify and quantify the species release in aqueous and gaseous phases. Results showed a difference in the degradation of the membrane active layer and support layer between aerobic and anaerobic conditions. The different analysis performed suggested that the breakage of amide bonds was significantly higher in aerobic conditions rather than in anaerobic. This observation was confirmed by the measurement of an increasing amount of release species in aqueous and gaseous phase in aerobic conditions. Ester bonds scissions were highlighted as soon as the dose reached the value of 0.1 MGy in both conditions indicating an important sensitivity of the PVA-type coating of the RO membrane towards irradiation. Nevertheless, investigation of the top 10 nm surface of the active layer composition by XPS showed that the scissions of amide and ester bonds were similar in both conditions. Finally, all these results underlined a difference in the degradation mechanisms of the RO membranes: in anaerobic conditions, the degradation was limited to the top surface of the membrane and reductive species were involved in the degradation reactions. (C) 2016 Elsevier Ltd. All rights reserved.
Nicolas Combernoux, Luc Schrive, Véronique Labed, Yvan Wyart, Emilie Carretier, et al.. Irradiation effects on RO membranes: Comparison of aerobic and anaerobic conditions. Polymer Degradation and Stability, 2016, 134, pp.126-135. ⟨10.1016/j.polymdegradstab.2016.09.034⟩. ⟨hal-01461790⟩
Nicolas Combernoux, Véronique Labed, Luc Schrive, Yvan Wyart, Emilie Carretier, et al.. Effect of gamma irradiation at intermediate doses on the performance of reverse osmosis membranes. International Journal for Radiation Physics and Chemistry, 2015, ⟨10.1016/j.radphyschem.2015.11.017⟩. ⟨hal-01294902⟩ Plus de détails...
The goal of this study is to explain the degradation of Polyamide (PA) composite reverse osmosis membrane (RO) in function of the irradiation dose. Irradiations were performed with a gamma 60Co source in wet conditions and under oxygen atmosphere. For different doses of 0.2 and 0.5 MGy with a constant dose rate of 0.5 kGy h−1, RO membranes performances (NaCl retention, permeability) were studied before and after irradiation. ATR-FTIR, ion chromatography and gas chromatography were used to characterize structural modification. Results showed that the permeability of RO membranes irradiated at 0.2 MGy exhibited a small decrease, related to scissions of the PVA coating. However, retention did not change at this dose. At 0.5 MGy, permeability showed a large increase of a factor around 2 and retention began to decrease from 99% to 95%. Chromatography measurements revealed a strong link between permselectivity properties variation, ion leakage and oxygen consumption. Add to ATR-FTIR observations, these results emphasized that the cleavages of amide and ester bonds were observed at 0.5 MGy, more precisely the loss of hydrogen bonds between polyamide chains. By different analysis, modifications of the polysulfone layer occur until a dose of 0.2 MGy.
Nicolas Combernoux, Véronique Labed, Luc Schrive, Yvan Wyart, Emilie Carretier, et al.. Effect of gamma irradiation at intermediate doses on the performance of reverse osmosis membranes. International Journal for Radiation Physics and Chemistry, 2015, ⟨10.1016/j.radphyschem.2015.11.017⟩. ⟨hal-01294902⟩
Journal: International Journal for Radiation Physics and Chemistry
Nicolas Combernoux, Luc Schrive, Véronique Labed, Yvan Wyart, Emilie Carretier, et al.. Study of polyamide composite reverse osmosis membrane degradation in water under gamma rays. Journal of Membrane Science, 2015, 480 (2), pp.64-73. ⟨10.1016/j.memsci.2015.01.019⟩. ⟨hal-01295140⟩ Plus de détails...
This study aims to investigate the impact of irradiation on the behavior of Polyamide (PA) composite reverse osmosis (RO) membranes. Irradiations were performed for two doses (0.1 and 1 MGy) in wet conditions under an oxygen atmosphere, with a gamma 60Co source. Irradiation effect on RO membranes performances (NaCl rejection, permeability) was studied before and after irradiation. ATR-FTIR, XPS, AFM, FESEM microscopy, ion chromatography were also used to characterize structural modifications. Results show that NaCl rejection of RO membranes irradiated at 1 MGy decreased until 64% and permeability increased by a factor of three. Nevertheless, membranes irradiated at 0.1 MGy did not exhibit any change in theirs permselectivity properties. Advanced analysis techniques confirmed that the firsts effects of gamma rays on RO membranes occurred between 0.1 and 1 MGy. Results emphasize that gamma rays effects on the RO membranes led to the breaking of amide and ester bonds at 1 MGy. These breakings resulted in loss of hydrogen bonds between polyamide chains, and consequently to a relaxation of the polyamide network. Finally, modifications of the polysulfone layer underneath were highlighted. Both relaxation of the polyamide network and modifications of the polysulfone layer could be involved in the drop of the permselectivity properties.
Nicolas Combernoux, Luc Schrive, Véronique Labed, Yvan Wyart, Emilie Carretier, et al.. Study of polyamide composite reverse osmosis membrane degradation in water under gamma rays. Journal of Membrane Science, 2015, 480 (2), pp.64-73. ⟨10.1016/j.memsci.2015.01.019⟩. ⟨hal-01295140⟩
Camille Delcroix, Jean-Philippe Bonnet, Martial Etienne, Philippe Moulin. Influence of ionic strength on membrane selectivity during the ultrafiltration of sulfated pentasaccharides. Carbohydrate Polymers, 2015, 116, pp.243-248. ⟨10.1016/j.carbpol.2014.07.013⟩. ⟨hal-01462145⟩ Plus de détails...
Due to their numerous biological properties, natural sulfated polysaccharides have attracted the interest of the food and pharmaceutical industries. Membrane processes were thought to be especially suitable for their production at industrial scale. The aim of this study was to evaluate the effect of sodium chloride, often used as a preservative and a precipitation adjuvant, on the ultrafiltration of sulfated pentasaccharides. In pure water, results showed a complete retention of the polymers on membranes with molecular weight cut-off up to eight times the molecular weight of the studied pentasaccharides. When NaCl was added to a concentration of 0.5 mol L-1, retention rates decreased significantly (approximate to-50%). As no relevant modification of the molecules size was observed through hydrodynamic radius measurements, these variations of selectivity were fully attributed to the screening of membrane surface charges by the electrolyte. Therefore, optimising the ultrafiltration of charged molecules need absolutely exammining electrostatic interactions. (C) 2014 Elsevier Ltd. All rights reserved.
Camille Delcroix, Jean-Philippe Bonnet, Martial Etienne, Philippe Moulin. Influence of ionic strength on membrane selectivity during the ultrafiltration of sulfated pentasaccharides. Carbohydrate Polymers, 2015, 116, pp.243-248. ⟨10.1016/j.carbpol.2014.07.013⟩. ⟨hal-01462145⟩
Gregory Cano, Adil Mouahid, Emilie Carretier, Pascal Guasp, Didier Moulin, et al.. Computational fluid dynamics simulations of membrane filtration process adapted for water treatment of aerated sewage lagoons. Water Science and Technology, 2015, 71 (2), pp.197 - 202. ⟨10.2166/wst.2014.476⟩. ⟨hal-01916461⟩ Plus de détails...
Gregory Cano, Adil Mouahid, Emilie Carretier, Pascal Guasp, Didier Moulin, et al.. Computational fluid dynamics simulations of membrane filtration process adapted for water treatment of aerated sewage lagoons. Water Science and Technology, 2015, 71 (2), pp.197 - 202. ⟨10.2166/wst.2014.476⟩. ⟨hal-01916461⟩
Jean-Claude Bertrand, Pierre Doumenq, Remy Guyoneaud, Benoît Marrot, Fabrice Martin-Laurent, et al.. Applied microbial ecology and bioremediation. Environmental Microbiology : Fundamentals and Applications, Springer, Netherlands, 2015, Print ISBN : 978-94-017-9117-5 Online ISBN : 978-94-017-9118-2. ⟨10.1007/978-94-017-9118-2_16⟩. ⟨hal-02793466⟩ Plus de détails...
The large diversity of metabolic capacities and the high genetic plasticity of microorganisms allow them to degrade virtually all organic compounds of natural or anthropogenic (xenobiotics) origin including those that are sources of environmental pollution. Thus microorganisms are major actors to eliminate or alleviate pollutions in the environment. The natural attenuation processes due to microbial activities (biodegradation and/or biotransformation) as well as the possibilities of using microorganisms in preventive treatments and bioremediation – biostimulation, bioaugmentation, rhizostimulation, bioleaching, and bioimmobilization – are presented. The main methods for microbial treatment of pollution, the chemical structure and the origin of the major pollutants, as well as the mechanisms of degradation by microorganisms – on the basis of physiological, biochemical, and genetic approaches – are described. Examples of treatments are presented for urban wastewater (activated sludge, lagoons, and planted beds), solid wastes (aerobic treatment or composting, anaerobic treatment and methanization, discharges), gaseous effluents, pesticides, polychlorobiphenyls, and finally hydrocarbons and petroleum products in the marine environment.
Jean-Claude Bertrand, Pierre Doumenq, Remy Guyoneaud, Benoît Marrot, Fabrice Martin-Laurent, et al.. Applied microbial ecology and bioremediation. Environmental Microbiology : Fundamentals and Applications, Springer, Netherlands, 2015, Print ISBN : 978-94-017-9117-5 Online ISBN : 978-94-017-9118-2. ⟨10.1007/978-94-017-9118-2_16⟩. ⟨hal-02793466⟩
Jean-Claude Bertrand, Pierre Doumenq, Remy Guyoneaud, Benoît Marrot, Fabrice Martin-Laurent, et al.. Applied microbial ecology and bioremediation. Environmental Microbiology : Fundamentals and Applications, Springer, Netherlands, 2015, Print ISBN : 978-94-017-9117-5 Online ISBN : 978-94-017-9118-2. ⟨10.1007/978-94-017-9118-2_16⟩. ⟨hal-02793466⟩ Plus de détails...
The large diversity of metabolic capacities and the high genetic plasticity of microorganisms allow them to degrade virtually all organic compounds of natural or anthropogenic (xenobiotics) origin including those that are sources of environmental pollution. Thus microorganisms are major actors to eliminate or alleviate pollutions in the environment. The natural attenuation processes due to microbial activities (biodegradation and/or biotransformation) as well as the possibilities of using microorganisms in preventive treatments and bioremediation – biostimulation, bioaugmentation, rhizostimulation, bioleaching, and bioimmobilization – are presented. The main methods for microbial treatment of pollution, the chemical structure and the origin of the major pollutants, as well as the mechanisms of degradation by microorganisms – on the basis of physiological, biochemical, and genetic approaches – are described. Examples of treatments are presented for urban wastewater (activated sludge, lagoons, and planted beds), solid wastes (aerobic treatment or composting, anaerobic treatment and methanization, discharges), gaseous effluents, pesticides, polychlorobiphenyls, and finally hydrocarbons and petroleum products in the marine environment.
Jean-Claude Bertrand, Pierre Doumenq, Remy Guyoneaud, Benoît Marrot, Fabrice Martin-Laurent, et al.. Applied microbial ecology and bioremediation. Environmental Microbiology : Fundamentals and Applications, Springer, Netherlands, 2015, Print ISBN : 978-94-017-9117-5 Online ISBN : 978-94-017-9118-2. ⟨10.1007/978-94-017-9118-2_16⟩. ⟨hal-02793466⟩
N. Wu, Yvan Wyart, Jérôme Rose, B Angeletti, Philippe Moulin. Application of membrane processes in fractionation of elements in river water. Water Science and Technology, 2015, 72 (12), pp.2277-90. ⟨10.2166/wst.2015.444⟩. ⟨hal-01294900⟩ Plus de détails...
The influence of wastewater treatment plant (WWTP) effluents from one microelectronic industrial zone on element concentrations and partitioning in river water was investigated. The stepwise membrane filtration is used to distinguish different size fractions including large particulate (>18 μm), particulate (0.2-18 μm), colloidal/nanoparticle (10 kDa-0.2 μm) and truly dissolved fractions (<10 kDa) in river water samples and WWTP effluents. Results demonstrated that anthropogenic inputs (WWTP effluents and industrial area) had an important influence on concentrations and partitioning of some elements in river water. Mass balance results showed that membrane filtration processes could realize a good fractionation for many elements (good recoveries) in water samples. Flux decline during 0.2 μm and 10 kDa filtrations were analyzed, and corresponding fouling mechanisms are discussed.
N. Wu, Yvan Wyart, Jérôme Rose, B Angeletti, Philippe Moulin. Application of membrane processes in fractionation of elements in river water. Water Science and Technology, 2015, 72 (12), pp.2277-90. ⟨10.2166/wst.2015.444⟩. ⟨hal-01294900⟩
N. Wu, Yvan Wyart, Jérôme Rose, B Angeletti, Philippe Moulin. Application of membrane processes in fractionation of elements in river water. Water Science and Technology, 2015, 72 (12), pp.2277-90. ⟨10.2166/wst.2015.444⟩. ⟨hal-01294900⟩ Plus de détails...
The influence of wastewater treatment plant (WWTP) effluents from one microelectronic industrial zone on element concentrations and partitioning in river water was investigated. The stepwise membrane filtration is used to distinguish different size fractions including large particulate (>18 μm), particulate (0.2-18 μm), colloidal/nanoparticle (10 kDa-0.2 μm) and truly dissolved fractions (<10 kDa) in river water samples and WWTP effluents. Results demonstrated that anthropogenic inputs (WWTP effluents and industrial area) had an important influence on concentrations and partitioning of some elements in river water. Mass balance results showed that membrane filtration processes could realize a good fractionation for many elements (good recoveries) in water samples. Flux decline during 0.2 μm and 10 kDa filtrations were analyzed, and corresponding fouling mechanisms are discussed.
N. Wu, Yvan Wyart, Jérôme Rose, B Angeletti, Philippe Moulin. Application of membrane processes in fractionation of elements in river water. Water Science and Technology, 2015, 72 (12), pp.2277-90. ⟨10.2166/wst.2015.444⟩. ⟨hal-01294900⟩
Yasamine Jaouad, Maud Villain, Naaila Ouazzani, Laila Mandi, Benoît Marrot. Biodegradation of olive mill wastewater in a membrane bioreactor: acclimation of the biomass and constraints. Desalination and Water Treatment, 2015, 57 (18), pp.8109-8118. ⟨10.1080/19443994.2015.1025435⟩. ⟨hal-01297598⟩ Plus de détails...
In order to overcome the toxic effect of olive mill wastewater (OMWW) on biomass during biological treatment, this work will test OMWW biodegradation in a membrane bioreactor (MBR) using an acclimation procedure and will study its constraints. Special focus will be put on soluble microbial products (SMP) analysis in MBR and their impact on membrane fouling. The study was realized in an external ceramic ultrafiltration MBR which offers more flexibility than the other biological treatments (i.e. independence between both hydraulic and sludge retention time) and a smaller footprint. Fed with a mass ratio of 40% OMWW/60% glucose, MBR biomass showed efficient chemical oxygen demand and polyphenols removal rates of, respectively, 90 and 65% despite a low activity of 3.2 mgO2 gMLVSS−1 h−1 due to the harsh and toxic environment. Moreover, HPLC analysis has showed a removal from the permeate of the major phenolic compounds including hydroxytyrosol, tyrosol, and caffeic acid. The monitoring of SMP concentrations has contributed to identify the presence of an environmental stress during OMWW input. Polysaccharide and protein are the main SMP fractions released with, respectively, 10 ± 0.1–20 ± 0.5 mg gMLVSS−1 and 4 ± 0.01–8 ± 0.01 mg gMLVSS−1. These SMP and higher molecular weight compounds brought by OMWW were found to be partially responsible for the intensive membrane fouling obtained. The feasibility of biomass acclimation directly to OMWW composed of multi-phenolic compounds was proved in MBR and its constraints were discussed. Microfiltration membrane would be suggested to overcome the constraints observed when ultrafiltration membrane was used (150 kDa).
Yasamine Jaouad, Maud Villain, Naaila Ouazzani, Laila Mandi, Benoît Marrot. Biodegradation of olive mill wastewater in a membrane bioreactor: acclimation of the biomass and constraints. Desalination and Water Treatment, 2015, 57 (18), pp.8109-8118. ⟨10.1080/19443994.2015.1025435⟩. ⟨hal-01297598⟩
N. Wu, Yvan Wyart, Jérôme Rose, B Angeletti, Philippe Moulin. Size fractionation of elements and nanoparticles in natural water by both dead-end and tangential flow filtration. Desalination and Water Treatment, 2015, 57 (18), pp.8194-8203. ⟨10.1080/19443994.2015.1019371⟩. ⟨hal-01294903⟩ Plus de détails...
The influence of membrane filtration modes on the estimation of size distribution for natural elements in water was investigated. The stepwise membrane filtration is used to distinguish different size fractions including large particulate (>18 μm), particulate (0.2–18 μm), colloidal/nanoparticle (10 kDa–0.2 μm), and truly dissolved fractions (<10 kDa) in river water samples and wastewater treatment plants effluents. Dead-end and tangential flow filtrations were compared during fractionation process. For most elements, concentrations in different size fractions obtained by two filtration modes were generally similar. The obvious difference was only found in acid fractions for some elements, which might be related to the cake grown at membrane surfaces between two filtration modes. In case of elemental partitioning, the influence of filtration modes was normally negligible, when the membranes used and operational factors were exactly the same.
N. Wu, Yvan Wyart, Jérôme Rose, B Angeletti, Philippe Moulin. Size fractionation of elements and nanoparticles in natural water by both dead-end and tangential flow filtration. Desalination and Water Treatment, 2015, 57 (18), pp.8194-8203. ⟨10.1080/19443994.2015.1019371⟩. ⟨hal-01294903⟩
Yvan Wyart, R. Tamime, L. Siozade, I. Baudin, K. Glucina, et al.. Morphological analysis of flat and hollow fiber membranes by optical and microscopic methods as a function of the fouling. Journal of Membrane Science, 2014, 472, pp.241-250. ⟨10.1016/j.memsci.2014.08.012⟩. ⟨hal-01270789⟩ Plus de détails...
In order to provide a better understanding of the impact of flocculant used on membrane properties in drinking water production, a complete structural characterization of membranes was carried out from microscopic to macroscopic scale. New flat-sheet PES membranes with 10, 30 and 100 kDa MWCO were characterized by SEM, ellipsometry of angle resolved scattering (EARS), white light interferometry (WLI) and atomic force microscopy (AFM). It was shown that AFM is able to differentiate between membranes according to their MWCO and their manufacturing processes. The impact of flocculant filtration (PAX-XL 7A and Aqualenc F1) on flat-sheet PES 100 kDa membrane was studied. SEM and AFM characterizations revealed a modification of membrane surface state after flocculant filtration and cleaning step. AFM was finally used to characterize hollow fiber membranes after 1 and 2 years of water production. The results showed that AFM is a very interesting tool to investigate membrane ageing.
Yvan Wyart, R. Tamime, L. Siozade, I. Baudin, K. Glucina, et al.. Morphological analysis of flat and hollow fiber membranes by optical and microscopic methods as a function of the fouling. Journal of Membrane Science, 2014, 472, pp.241-250. ⟨10.1016/j.memsci.2014.08.012⟩. ⟨hal-01270789⟩
Nan Wu, Yvan Wyart, Laure Siozade, Gaelle Georges, Gaëlle Georges, et al.. Characterization of ultrafiltration membranes fouled by quantum dots by confocal laser scanning microscopy. Journal of Membrane Science, 2014, 470, pp.40-51. ⟨10.1016/j.memsci.2014.07.001⟩. ⟨hal-01270818⟩ Plus de détails...
The extensive applications of engineered nanomaterials (ENMs) can result in their release into waters. Membrane processes have great potential in reducing ENMs release. In that case, the issues of particular concern are membrane fouling caused by ENMs during separation processes. The objective of the present study is to improve the understanding of how ENMs are retained by membranes. An innovative methodology using confocal laser scanning microscopy (CSLM) is developed to locate fluorescent CdTe quantum dots (QDs) in different depths of fouled ultrafiltration membranes. With the help of image analysis software, both qualitative and quantitative information about the distribution of QDs in membranes are obtained. For low molecular weight cut off (MWCO) membranes (1, 5 and 10 kDa), QDs (sizes from 1 to 5 nm) distributed mainly around surfaces or on top of membranes, accompanied with near 100% retention regardless of transmembrane pressure. As membrane MWCO increased (30 and 100 kDa), more QDs could pass through membranes accompanied with decreasing retention efficiencies and the occurrence of QDs was usually in deeper positions of membranes. Distribution results were in agreement with fouling analysis which demonstrated that standard blocking (internal fouling) and/or cake models (external fouling) frequently occurred during filtrations of QDs.
Nan Wu, Yvan Wyart, Laure Siozade, Gaelle Georges, Gaëlle Georges, et al.. Characterization of ultrafiltration membranes fouled by quantum dots by confocal laser scanning microscopy. Journal of Membrane Science, 2014, 470, pp.40-51. ⟨10.1016/j.memsci.2014.07.001⟩. ⟨hal-01270818⟩
Songlin Wang, Xiuqing Lu, Ning Zhou, Wen Xiong, Xiaohui Wu, et al.. Analysis of performance criteria for ultrafiltration membrane integrity test using magnetic nanoparticles. Desalination, 2014, 353, pp.21-29. ⟨10.1016/j.desal.2014.09.004⟩. ⟨hal-01295147⟩ Plus de détails...
An alternative ultrafiltration membrane integrity test utilizing magnetic nanoparticle as a surrogate has been investigated in previous studies, but the absence of a feasible estimation model for the degree of membrane damage causes that this simple membrane integrity test would be not applied easily. This study proposed a calculating model to predict membrane defect size, and investigated the theoretic resolution of the integrity test method. The results obtained with the evolved prediction model D, which is based on Darcy’s law and Bernoulli equation, were satisfactory in predicting the membrane defect size. In this study, this integrity test method had about 39.33% probability to have a theoretic resolution of 3 μm or less under common experimental conditions.
Songlin Wang, Xiuqing Lu, Ning Zhou, Wen Xiong, Xiaohui Wu, et al.. Analysis of performance criteria for ultrafiltration membrane integrity test using magnetic nanoparticles. Desalination, 2014, 353, pp.21-29. ⟨10.1016/j.desal.2014.09.004⟩. ⟨hal-01295147⟩
Patrice Bacchin, Quentin Derekx, Damien Veyret, Karl Glucina, Philippe Moulin. Clogging of microporous channels networks: role of connectivity and tortuosity. Microfluidics and Nanofluidics, 2014, 17 (1), pp.85-96. ⟨10.1007/s10404-013-1288-4⟩. ⟨hal-01295161⟩ Plus de détails...
The aim of this work is to study the pore blocking by the use of microfluidic devices (microseparators) and numerical simulation approaches. The microseparators are made in PDMS and are constituted of an array of microchannels 20 μm wide with three types of structure: straight microchannels, connected microchannels (or aligned square pillars) and staggered square pillars in order to mimic merely the complexity of the flow encountered in filters or membranes (tortuosity, connectivity between pores). Direct observation with video microscopy of filtrations of 5 μm latex particles has been performed to examine the capture of particles. The results show a piling up of particles within the porous media leading to a clogging. The capture efficiency remains low (<0.1 %). In the case of filtration in the forest of pillars, the capture is faster and arises mainly between the pillars. The increase in tortuosity in the microseparator leads then to a rise of the clogging. It must be caused by the increase in critical trajectories leading to the capture of particles on the PDMS walls. At the same time, numerical simulations of filtration in parallel with microchannels have been performed in the same flow conditions with GeoDict software. The different kind of experimental deposit structure can be simulated, but there is still inaccuracy in the description of the accumulation kinetics. These discrepancies are probably due to the lack of accuracy to depict particle/particle colloidal interactions in simulations and the fact that re-suspension of particles after capture is not well described.
Patrice Bacchin, Quentin Derekx, Damien Veyret, Karl Glucina, Philippe Moulin. Clogging of microporous channels networks: role of connectivity and tortuosity. Microfluidics and Nanofluidics, 2014, 17 (1), pp.85-96. ⟨10.1007/s10404-013-1288-4⟩. ⟨hal-01295161⟩
Jean Louis Perrin, N. Raïs, Nanée Chahinian, P. Moulin, M. Ijjaali. Water quality assessment of highly polluted rivers in a semi-arid Mediterranean zone Oued Fez and Sebou River (Morocco). Journal of Hydrology, 2014, 510, pp.26 - 34. ⟨10.1016/j.jhydrol.2013.12.002⟩. ⟨hal-01928819⟩ Plus de détails...
Oued Fez (one of the Sebou River tributaries – Morocco) allowed us to study and quantify the effect of the lack of wastewater treatment on surface water quality in semi-arid hydrological context. The analysis is based on field data collected from June 2009 to December 2011. Concentration and load patterns of nitrogen, phosphorus and chromium (used in the processing of leather) are compared in stable hydrological conditions during low flow and high flow periods in an eight-location sampling network. The Oued Fez and the Sebou River are characterised by severe pollution downstream from the city of Fez, particularly TN (mainly NH4 and Norg), TP (mainly Ppart) and TCr. The most polluted sites are those directly under the influence of domestic and industrial waste water inputs, particularly tannery effluents. Obviously, the concentrations measured at these locations are above all environmental quality standards. Pollutant loads are very heavy in the Sebou River and can contaminate the river course for kilometres. Moreover, as the water of the Sebou River is used for the irrigation of vegetables, serious problems of public health could arise. A better understanding of contaminant dynamics and self-purifying processes in these rivers will help implement actions and steps aimed at improving water quality in the Sebou River, which is the primary water supply source in Morocco and is used for agricultural and industrials purposes as well as for drinking water.
Jean Louis Perrin, N. Raïs, Nanée Chahinian, P. Moulin, M. Ijjaali. Water quality assessment of highly polluted rivers in a semi-arid Mediterranean zone Oued Fez and Sebou River (Morocco). Journal of Hydrology, 2014, 510, pp.26 - 34. ⟨10.1016/j.jhydrol.2013.12.002⟩. ⟨hal-01928819⟩
Maud Villain, Isabelle Bourven, Gilles Guibaud, Benoît Marrot. Impact of synthetic or real urban wastewater on membrane bioreactor (MBR) performances and membrane fouling under stable conditions. Bioresource Technology, 2014, 155, pp.235-244. ⟨10.1016/j.biortech.2013.12.063⟩. ⟨hal-01053345⟩ Plus de détails...
Influence of substrate type (synthetic (SWW) or real wastewater (RWW)) on lab scale MBR performances (e.g. COD and N-NH4+ removal rates and bioactivities) was assessed. Membrane fouling was related to MBR biological medium characteristics. With RWW, autotrophic biomass was better acclimated with complete ammonium removal. MBR biological medium was characterized by main soluble microbial products (SMP) (proteins, polysaccharides and humic-like substances) quantification and molecular weights (MW) distribution determination. The biological medium of SWW acclimation contained 60 mg L (1) more of SMP, mainly composed of proteins and polysaccharides. A protein fraction having high MW (>600 kDa) could be responsible for higher removable fouling fraction in that case. SMP of RWW experiment were mainly composed of small proteic and humic-like fractions, poorly retained by the membrane and resulting in a weak augmentation of irremovable and irreversible fouling fractions compared to SWW acclimation. Therefore RWW utilization is preferable to approach real operating MBR.
Maud Villain, Isabelle Bourven, Gilles Guibaud, Benoît Marrot. Impact of synthetic or real urban wastewater on membrane bioreactor (MBR) performances and membrane fouling under stable conditions. Bioresource Technology, 2014, 155, pp.235-244. ⟨10.1016/j.biortech.2013.12.063⟩. ⟨hal-01053345⟩
Pierre Hamon, Maud Villain, Benoît Marrot. Determination of sorption properties of micropollutants: What is the most suitable activated sludge inhibition technique to preserve the biomass structure?. Chemical Engineering Journal, 2014, 242, pp.260-268. ⟨10.1016/j.cej.2013.07.117⟩. ⟨hal-01050196⟩ Plus de détails...
Apart from providing a total activated sludge (AS) inhibition, an efficient AS inhibition technique must preserve the biomass structure in order to maintain the real sorption phenomenon. Many inhibition techniques with different modes of action were used in previous studies for AS inhibition. But, the effectiveness of AS deactivation and the adverse effects on the biomass structure were rarely related. In this paper, five common AS inhibition techniques were evaluated: thermal, three chemical and gas purging techniques. The lowest chemical effective concentrations were determined in order to limit the negative impact on the AS structure. 100 mgHg2SO4 gTSS−1 and 30 mgHgCl2 gTSS−1 within 2 h of reaction were enough to provide a complete AS inhibition. However, after 20 h of reaction a full AS inhibition has never been achieved with sodium azide at 200 mgNaN3 gTSS−1, even by increasing NaN3 concentration. The analysis of the AS apparent viscosity, the median size D50 of the flocs and the supernatant turbidity showed that the thermal technique destructured the AS completely. A significant AS deflocculation is induced by the three chemical reagents depending on the mode of action and the concentration used. Thermal and chemical inactivations are therefore not suitable to determine sorption properties. The only technique which kept the initial AS structure unchanged has several drawbacks since (i) a reaction might occur between the gas and the analyte of interest, and (ii) anaerobic activated sludge are not inhibited by this technique. Therefore, the establishment of anaerobic conditions without gas injection is recommended for implementing sorption experiments on aerobic AS.
Pierre Hamon, Maud Villain, Benoît Marrot. Determination of sorption properties of micropollutants: What is the most suitable activated sludge inhibition technique to preserve the biomass structure?. Chemical Engineering Journal, 2014, 242, pp.260-268. ⟨10.1016/j.cej.2013.07.117⟩. ⟨hal-01050196⟩
Fabrice Testa, Clémence Coetsier, Emilie Carretier, M. Ennahali, B. Laborie, et al.. Recycling a slurry for reuse in chemical mechanical planarization of tungsten wafer: effect of chemical adjustments and comparison between static and dynamic experiments. Microelectronic Engineering, 2014, 113, pp.114-122. ⟨10.1016/j.mee.2013.07.022⟩. ⟨hal-01053254⟩ Plus de détails...
Recycling abrasive slurry that has been used in chemical mechanical polishing (CMP) is one of the options for reducing the cost of manufacturing microchip processors. We use ultrafiltration which is a method of choice to recycle silica (SiO2)-based slurry. Taking into account that the chemical composition of abrasive slurry plays an important role in tungsten CMP (W-CMP), chemical adjustments have to be made so that the concentrated after used slurry can be reused. In this study, we investigate the effects of chemical additives (iron catalyst, oxalic acid as complexing agent and surfactants as stabilizers) in slurry that has been retreated by ultrafiltration. Experiments are conducted both under static and dynamic conditions and results are compared to better understand the effect of chemical adjustments on the main performances of W-CMP. An optimal chemical adjustment is proposed through a design of experiments evaluation to obtain a concentrated after used and chemically adjust slurry comparable to the operational point of use slurry.
Fabrice Testa, Clémence Coetsier, Emilie Carretier, M. Ennahali, B. Laborie, et al.. Recycling a slurry for reuse in chemical mechanical planarization of tungsten wafer: effect of chemical adjustments and comparison between static and dynamic experiments. Microelectronic Engineering, 2014, 113, pp.114-122. ⟨10.1016/j.mee.2013.07.022⟩. ⟨hal-01053254⟩
C. Regula, Emilie Carretier, Yvan Wyart, Geneviève Gésan-Guiziou, A. Vincent, et al.. Chemical cleaning/disinfection and ageing of organic UF membranes: a review. Water Research, 2014, 56, pp.325-365. ⟨10.1016/j.watres.2014.02.050⟩. ⟨hal-01053262⟩ Plus de détails...
Membrane separation processes have become a basic unit operation for process design and product development. These processes are used in a variety of separation and concentration steps, but in all cases, the membranes must be cleaned regularly to remove both organic and inorganic material deposited on the surface and/or into the membrane bulk. Cleaning/disinfection is a vital step in maintaining the permeability and selectivity of the membrane in order to get the plant to its original capacity, to minimize risks of bacteriological contamination, and to make acceptable products. For this purpose, a large number of chemical cleaning/disinfection agents are commercially available. In general, these cleaning/disinfection agents have to improve the membrane flux to a certain extent. However, they can also cause irreversible damages in membrane properties and performances over the long term. Until now, there is considerably less literature dedicated to membrane ageing than to cleaning/disinfection. The knowledge in cleaning/disinfection efficiency has recently been improved. But in order to develop optimized cleaning/disinfection protocols there still remains a challenge to better understand membrane ageing. In order to compensate for the lack of correlated cleaning/disinfection and ageing data from the literature, this paper investigates cleaning/disinfection efficiencies and ageing damages of organic ultrafiltration membranes. The final aim is to provide less detrimental cleaning/disinfection procedures and to propose some guidelines which should have been taken into consideration in term of membrane ageing studies. To carry out this study, this article will detail the background of cleaning/disinfection and aging membrane topics in a first introductive part. In a second part, key factors and endpoints of cleaning/disinfection and aging membranes will be discussed deeply: the membrane role and the cleaning parameters roles, such as water quality, storing conditions, cleaning/disinfection/aging agents/conditions/protocols. The third and last part will be developed the parameters, methods and ways of characterization at our disposal and commonly used to develop and implement membrane cleaning and/or ageing studies.
C. Regula, Emilie Carretier, Yvan Wyart, Geneviève Gésan-Guiziou, A. Vincent, et al.. Chemical cleaning/disinfection and ageing of organic UF membranes: a review. Water Research, 2014, 56, pp.325-365. ⟨10.1016/j.watres.2014.02.050⟩. ⟨hal-01053262⟩
Camille Regula, Emilie Carretier, Yvan Wyart, M. Sergent, Geneviève Gésan-Guiziou, et al.. Drinking water ultrafiltration: state of the art and experimental designs approach. Desalination and Water Treatment, 2013, 51 (25-27), pp.4892-4900. ⟨10.1080/19443994.2013.795213⟩. ⟨hal-00995678⟩ Plus de détails...
During cleaning steps, ultrafiltration membranes are mechanically and chemically stressed. This can result in membrane degradations, failures, and be shut down for membrane replacement and therefore affect the production rate of the process and its sustainability. These phenomena raise the problem of necessary optimization of the cleaning procedures that have to tackle simultaneously, the best cleaning efficiency and the less detrimental procedures for the membranes. Despite the fact that aging is becoming a major issue between end-users, membrane manufacturers, and chemical product suppliers, there is considerably less literature dedicated to membrane aging than to cleaning. First, this study briefly reviews articles dedicated to aging damages involved by NaOCl and commercial detergents (especially on polysulfone ultrafiltration membrane). Then, the present study details the innovative way setup: "Designs of experiments" is used to provide additional data that help with a thorough understanding of membrane aging. Thus, contrary to the accelerated aging approach that is commonly used in membrane-aging researches (concentration per time of contact: "c × t parameter"), designs of experiments were used to organize at best the aging experiments in order to achieve a relevant establishment of an aging pattern. Results show that this scientific approach provides a satisfying and reliable pattern to simulate membrane aging in function of the chosen chemical parameters.
Camille Regula, Emilie Carretier, Yvan Wyart, M. Sergent, Geneviève Gésan-Guiziou, et al.. Drinking water ultrafiltration: state of the art and experimental designs approach. Desalination and Water Treatment, 2013, 51 (25-27), pp.4892-4900. ⟨10.1080/19443994.2013.795213⟩. ⟨hal-00995678⟩
Nan Wu, Yvan Wyart, Yanping Liu, Jérôme Rose, Philippe Moulin. An overview of solid/liquid separation methods and size fractionation techniques for engineered nanomaterials in aquatic environment. Environmental Technology Reviews, 2013, 2 (1), pp.55-70. ⟨10.1080/09593330.2013.788073⟩. ⟨hal-00996048⟩ Plus de détails...
The increasing use of engineered nanomaterials (ENMs) will inevitably result in their release into natural environment and thereby lead to the exposure of living organisms. Hence, a new concern has arisen for the risk assessment of these emerging contaminants in the natural environment, especially in aquatic systems as an important sink and exposure source. Reducing the release of nanomaterials into water could contribute significantly to reducing exposure. Thus it is vital to consider how to manage wastewater containing such ultrafine nano-objects. This review provides an overview of technologies (classical and innovative) for nanomaterials separation/removal, which are discussed in terms of their advantages and disadvantages, as well as parameters affecting removal efficiency. To investigate the occurrence and fate of ENMs in the aquatic environment, the development of appropriate approaches for their separation prior to analysis is needed urgently. Finally, a brief summary of techniques for sample preparation and fractionation of ENMs in the natural aquatic environment is presented.
Nan Wu, Yvan Wyart, Yanping Liu, Jérôme Rose, Philippe Moulin. An overview of solid/liquid separation methods and size fractionation techniques for engineered nanomaterials in aquatic environment. Environmental Technology Reviews, 2013, 2 (1), pp.55-70. ⟨10.1080/09593330.2013.788073⟩. ⟨hal-00996048⟩
Philippe Moulin, Jérôme Vicente, Yvan Wyart. CHARACTERIZATION (TWO-DIMENSIONAL–THREE- DIMENSIONAL) OF CERAMIC MICROFILTRATION MEMBRANE BY SYNCHROTRON RADIATION: NEW AND ABRADED MEMBRANES. Journal of Porous Media, 2013. ⟨hal-01888074⟩ Plus de détails...
Philippe Moulin, Jérôme Vicente, Yvan Wyart. CHARACTERIZATION (TWO-DIMENSIONAL–THREE- DIMENSIONAL) OF CERAMIC MICROFILTRATION MEMBRANE BY SYNCHROTRON RADIATION: NEW AND ABRADED MEMBRANES. Journal of Porous Media, 2013. ⟨hal-01888074⟩
G. Cano, P. Steinle, Jean-Vincent Daurelle, Yvan Wyart, K. Glucina, et al.. Pressure fields in an industrial UF module: effect of backwash. Desalination and Water Treatment, 2013, 51 (25-27), pp.4907-4913. ⟨10.1080/19443994.2013.795255⟩. ⟨hal-00995664⟩ Plus de détails...
In the last decade, membrane manufacturers have improved their ultrafiltration module to raise the production of drinking water in order to meet an increasing demand. The usual process used is an inside-out filtration in dead-end mode. In this configuration, the energy consumption is limited by outside-in backwashes. Raising the permeability of the membranes lead to an increase in module compactness and strongly modify the driving force in the module. This study presents a computational fluid dynamics (CFD) model to predict the pressure and velocity field in the hollow fiber network (HFN) taking into account several parameters as the geometry of the module, the inlet pressure, gravity, and temperature. For the industrial tested module configuration, results shown that hollow fibers work in a homogeneous way in filtration mode but a great heterogeneity appear during the backwash. All the results have been validated compared with experimental values.
G. Cano, P. Steinle, Jean-Vincent Daurelle, Yvan Wyart, K. Glucina, et al.. Pressure fields in an industrial UF module: effect of backwash. Desalination and Water Treatment, 2013, 51 (25-27), pp.4907-4913. ⟨10.1080/19443994.2013.795255⟩. ⟨hal-00995664⟩
C. Regula, Emilie Carretier, Yvan Wyart, M. Sergent, Geneviève Gésan-Guiziou, et al.. Ageing of ultrafiltration membranes in contact with sodium hypochlorite and commercial oxidant: experimental designs as a new ageing protocol. Separation and Purification Technology, 2013, 103, pp.119-138. ⟨10.1016/j.seppur.2012.10.010⟩. ⟨hal-00996093⟩ Plus de détails...
In drinking water production plants using membrane processes, contact with cleaning chemicals is believed to play an important role in membrane ageing. In this article, polysulfone membranes were used to simulate the industrial cleaning in static conditions. Ageing of the membrane was mimicked by immersing samples in solutions containing sodium hypochlorite and commercial oxidants with various concentrations, temperatures and soaking times defined by experimental designs. For the first time in the chemical membranes ageing research, an approach based on methodological tools has been realized. The main interest is to achieve a relevant ageing pattern without using an accelerated ageing protocol (high concentrations and short contact times). The macroscopic changes were monitored by permeability measurement and mechanical strength tests coupled with a microscopic characterization by ATR-FTIR (to identify the chemical functional groups affected by ageing) and SEM (to visualize qualitatively the surface changes and deteriorations). The present work details the comparison between NaOCl and another oxidant: P3-Oxysan ZS (composed of peracetic and peroctanoic acid). The comparison of the macroscopic and microscopic properties of hypochlorite-aged membranes and P3-Oxysan ZS-aged membrane indicate NaOCl is far more detrimental for membrane integrity than P3-Oxysan ZS. The latter might give an alternative solution to the use of chlorine on industrial plant. The obtained results let to consider less harmful cleaning products on membranes. Then, the present study based on experimental designs let to underline that the most commonly used parameter "concentration × time of exposure" (c × t) was not a representative tool to predict membrane ageing.
C. Regula, Emilie Carretier, Yvan Wyart, M. Sergent, Geneviève Gésan-Guiziou, et al.. Ageing of ultrafiltration membranes in contact with sodium hypochlorite and commercial oxidant: experimental designs as a new ageing protocol. Separation and Purification Technology, 2013, 103, pp.119-138. ⟨10.1016/j.seppur.2012.10.010⟩. ⟨hal-00996093⟩
Philippe Moulin, Camille Regula, Emilie Carretier, Geneviève Gésan-Guiziou, Michelle Sergent, et al.. Influence of commercial detergents on UF membrane ageing: Case of drinking water. Membrane Water Treatment, 2013. ⟨hal-01916481⟩ Plus de détails...
Philippe Moulin, Camille Regula, Emilie Carretier, Geneviève Gésan-Guiziou, Michelle Sergent, et al.. Influence of commercial detergents on UF membrane ageing: Case of drinking water. Membrane Water Treatment, 2013. ⟨hal-01916481⟩
Nan Wu, Yvan Wyart, Yanping Liu, Jérôme Rose, Philippe Moulin. An overview of solid/liquid separation methods and size fractionation techniques for engineered nanomaterials in aquatic environment. Environmental Technology Reviews, 2013, 2 (1), pp.55-70. ⟨10.1080/09593330.2013.788073⟩. ⟨hal-00996048⟩ Plus de détails...
The increasing use of engineered nanomaterials (ENMs) will inevitably result in their release into natural environment and thereby lead to the exposure of living organisms. Hence, a new concern has arisen for the risk assessment of these emerging contaminants in the natural environment, especially in aquatic systems as an important sink and exposure source. Reducing the release of nanomaterials into water could contribute significantly to reducing exposure. Thus it is vital to consider how to manage wastewater containing such ultrafine nano-objects. This review provides an overview of technologies (classical and innovative) for nanomaterials separation/removal, which are discussed in terms of their advantages and disadvantages, as well as parameters affecting removal efficiency. To investigate the occurrence and fate of ENMs in the aquatic environment, the development of appropriate approaches for their separation prior to analysis is needed urgently. Finally, a brief summary of techniques for sample preparation and fractionation of ENMs in the natural aquatic environment is presented.
Nan Wu, Yvan Wyart, Yanping Liu, Jérôme Rose, Philippe Moulin. An overview of solid/liquid separation methods and size fractionation techniques for engineered nanomaterials in aquatic environment. Environmental Technology Reviews, 2013, 2 (1), pp.55-70. ⟨10.1080/09593330.2013.788073⟩. ⟨hal-00996048⟩
Jérôme Vicente, Yvan Wyart, Philippe Moulin. Characterization (2D-3D) of ceramic microfiltration membrane by synchrotron radiation: new and abraded membranes. Journal of Porous Media, 2013, 16 (6), pp.537-545. ⟨10.1615/JPorMedia.v16.i6.50⟩. ⟨hal-00994249⟩ Plus de détails...
Membranes are used in many industrial fields and, when performances of these processes decrease, the issue of modifying the porous structure is often raised. Many optical or microscopic techniques allow us to perfectly characterize the membrane's surface but very few allow the characterization of its depth. Through the comparison between a new and an abraded membrane, this paper presents the post-processing of images obtained by radiation synchrotron and associated dimensions that can be obtained by three-dimensional (3D) reconstruction. Thus, the whole thickness of the membrane is obtained from the skin to the permeate exit and a morphological analysis of the solid and pore phase is proposed at the heart of the membrane. The two-dimensional characterization allows one to perfectly define the mapping of the pores and to quantify by different comparisons the modification of the skin of a membrane after usage. The 3D characterization by X-ray tomography at the scale of the thickness of the membrane allows us to obtain the granulometric distribution of the different phases of the porous matrix. This ability to characterize both the solid and the pores is relevant to the study of membranes, showing not only the modification of the solid matrix but also highlighting pore fouling.
Jérôme Vicente, Yvan Wyart, Philippe Moulin. Characterization (2D-3D) of ceramic microfiltration membrane by synchrotron radiation: new and abraded membranes. Journal of Porous Media, 2013, 16 (6), pp.537-545. ⟨10.1615/JPorMedia.v16.i6.50⟩. ⟨hal-00994249⟩
C Regula, Emilie Carretier, Yvan Wyart, M. Sergent, Geneviève Gésan-Guiziou, et al.. Influence of commercial detergents on UF membrane ageing: case of drinking water. Medical Engineering and Physics, Elsevier, 2013, 4 (1), pp.27-51. ⟨hal-01209422⟩ Plus de détails...
During cleaning steps, ultrafiltration membranes are mechanically and chemically stressed. This may result in membrane degradations and failures. In this paper, polysulfone membranes were used to evaluate membrane deteriorations by commercial detergents in static conditions. Ageing of the membrane was simulated by immersing samples in solutions containing commercial detergents with various concentrations, temperatures and times defined by experimental designs. Indeed, an innovative approach in the chemical membranes ageing researches, based on methodological tools, was used in order to achieve significant ageing experiments without using an accelerated ageing protocol. The macroscopic changes were monitored by permeability measurements and mechanical strength tests coupled with a microscopic characterization by ATR-FTIR and HRSEM. The present work details results obtained for three commercial detergents: an alkaline, an acidic and an enzymatic detergent. It was found that the detergents used in the industrial advised conditions (concentration, temperature and time of contact) were not detrimental for membrane properties (permeability and elongation at break) and so for the quality of the produced water. Over the industrial cumulated time of contact, different ageing effects can be observed and compared with the ones induced by NaOCl.
C Regula, Emilie Carretier, Yvan Wyart, M. Sergent, Geneviève Gésan-Guiziou, et al.. Influence of commercial detergents on UF membrane ageing: case of drinking water. Medical Engineering and Physics, Elsevier, 2013, 4 (1), pp.27-51. ⟨hal-01209422⟩
Philippe Moulin, Josiane Nikiema, Alberto Figoli, Norbert Weissenbacher, Günter Langergraber, et al.. Wastewater treatment prac ces in Africa - Experiences from seven countries. Sustainable Sanitation Practice, 2013. ⟨hal-01916469⟩ Plus de détails...
Philippe Moulin, Josiane Nikiema, Alberto Figoli, Norbert Weissenbacher, Günter Langergraber, et al.. Wastewater treatment prac ces in Africa - Experiences from seven countries. Sustainable Sanitation Practice, 2013. ⟨hal-01916469⟩
Maud Villain, Ludiwine Clouzot, Gilles Guibaud, Benoît Marrot. Impact of oxygen cut off and starvation conditions on biological activity and physico-chemical properties of activated sludge. Environmental Technology, 2013, 34 (7), pp.901-910. ⟨10.1080/09593330.2012.722689⟩. ⟨hal-00995710⟩ Plus de détails...
Physico-chemical and biological parameters were monitored both throughout different oxygen cut off and starvation (OCS) times (6 h-72 h) and after the restoration of normal operational conditions. Sludge apparent viscosity and soluble extracellular polymeric substances (EPS) characteristics were measured to determine the activated sludge (AS) properties. Oxygen transfer, biological activity with specific oxygen uptake rate (SOUR) measurements during endogenous/exogenous conditions (without any external substrate/with external substrate consumption) and chemical oxygen demand (COD) removal were measured to assess the AS performances. During the different stress times, AS deflocculated as a decrease of apparent viscosity was observed and microorganisms biodegraded the released EPS to survive. After aeration return, and under endogenous conditions, size exclusion chromatographic fingerprints of soluble EPS were modified and macromolecules probably of type humic-like substances appeared in significant quantities. These new macromolecules presumably acted as biosurfactants. Consequently, the liquid surface tension, as well as the oxygen transfer rate (OTR), decreased. Under exogenous conditions, high biological activity (SOUR = 11.8 +/- 2.1 mg(O2 x g(MLVSS)(-1) x h(-1)) compensated the decrease of oxygen transfer. Finally, AS biomass maintained a constant COD degradation rate (15.7 +/- 1.9 mg(O2) x g(MLVSS)(-1) x h(-1)) before and after the disturbances for all times tested. This work demonstrates that AS microorganisms can counteract concomitant oxygen and nutrients shortage when the duration of such a condition does not exceed 72 h. Dissociation of endogenous/exogenous conditions appears to offer an ideal laboratory model to study EPS and biomass activity effects on oxygen transfer.
Maud Villain, Ludiwine Clouzot, Gilles Guibaud, Benoît Marrot. Impact of oxygen cut off and starvation conditions on biological activity and physico-chemical properties of activated sludge. Environmental Technology, 2013, 34 (7), pp.901-910. ⟨10.1080/09593330.2012.722689⟩. ⟨hal-00995710⟩
Songlin Wang, Yvan Wyart, J. Pérot, F. Nauleau, Philippe Moulin. Study of the ageing of hollow fibers in an industrial module for drinking water production. Membrane Water Treatment, 2013, 4 (1), pp.53-67. ⟨10.12989/mwt.2013.4.1.053⟩. ⟨hal-00996029⟩ Plus de détails...
In this study, ageing characteristics of an industrial hollow-fiber membrane module were investigated after 50 months of drinking water production. For this purpose, the industrial module was opened to make 18 smaller modules with hollow-fibers taken from different parts of the industrial module. These modules were probed by the use of a magnetic nanoparticle (NP) challenge test based on magnetic susceptibility (K) measurement of permeate. No magnetic susceptibility was detected in permeate when the challenge test was performed on an intact membrane module, indicating the complete retention of nanoparticles by the membrane. The compromised membrane module can be successfully detected by means of magnetic susceptibility measurement in permeate. So, this study clearly demonstrates that ageing of ultrafiltration membranes can be monitored by measuring the magnetic susceptibility of permeate from an ultrafiltration membrane module. These results showed that the hollow fibers in the center zones of the bundle would age faster than those in the outer zones around the bundle. This result is in agreement with numerical simulation (Daurelle et al. 2011).
Songlin Wang, Yvan Wyart, J. Pérot, F. Nauleau, Philippe Moulin. Study of the ageing of hollow fibers in an industrial module for drinking water production. Membrane Water Treatment, 2013, 4 (1), pp.53-67. ⟨10.12989/mwt.2013.4.1.053⟩. ⟨hal-00996029⟩
Camille Regula, Emilie Carretier, Yvan Wyart, Michel Sergent, Geneviève Gésan-Guiziou, et al.. Influence of commercial detergents on UF membrane ageing: Case of ă drinking water. Membrane Water Treatment, 2013, 4 (1), pp.27-51. ⟨hal-01464726⟩ Plus de détails...
During cleaning steps, ultrafiltration membranes are mechanically and ă chemically stressed. This may result in membrane degradations and ă failures. In this paper, polysulfone membranes were used to evaluate ă membrane deteriorations by commercial detergents in static conditions. ă Ageing of the membrane was simulated by immersing samples in solutions ă containing commercial detergents with various concentrations, ă temperatures and times defined by experimental designs. Indeed, an ă innovative approach in the chemical membranes ageing researches, based ă on methodological tools, was used in order to achieve significant ageing ă experiments without using an accelerated ageing protocol. The ă macroscopic changes were monitored by permeability measurements and ă mechanical strength tests coupled with a microscopic characterization by ă ATR-FTIR and HRSEM. The present work details results obtained for three ă commercial detergents: an alkaline, an acidic and an enzymatic ă detergent. It was found that the detergents used in the industrial ă advised conditions (concentration, temperature and time of contact) were ă not detrimental for membrane properties (permeability and elongation at ă break) and so for the quality of the produced water. Over the industrial ă cumulated time of contact, different ageing effects can be observed and ă compared with the ones induced by NaOCl.
Camille Regula, Emilie Carretier, Yvan Wyart, Michel Sergent, Geneviève Gésan-Guiziou, et al.. Influence of commercial detergents on UF membrane ageing: Case of ă drinking water. Membrane Water Treatment, 2013, 4 (1), pp.27-51. ⟨hal-01464726⟩
J. Vicente, Y. Wyart, P. Moulin. CHARACTERIZATION (TWO-DIMENSIONAL-THREE-DIMENSIONAL) OF CERAMIC MICROFILTRATION MEMBRANE BY SYNCHROTRON RADIATION: NEW AND ABRADED MEMBRANES. Journal of Porous Media, 2013, 16 (6), pp.537-545. ⟨hal-01459483⟩ Plus de détails...
Membranes are used in many industrial fields and, when performances of these processes decrease, the issue of modifying the porous structure is often raised. Many optical or microscopic techniques allow us to perfectly characterize the membrane's surface but very few allow the characterization of its depth. Through the comparison between a new and an abraded membrane, this paper presents the post-processing of images obtained by radiation synchrotron and associated dimensions that can be obtained by three-dimensional (3D) reconstruction. Thus, the whole thickness of the membrane is obtained from the skin to the permeate exit and a morphological analysis of the solid and pore phase is proposed at the heart of the membrane. The two-dimensional characterization allows one to perfectly define the mapping of the pores and to quantify by different comparisons the modification of the skin of a membrane after usage. The 3D characterization by X-ray tomography at the scale of the thickness of the membrane allows us to obtain the granulometric distribution of the different phases of the porous matrix. This ability to characterize both the solid and the pores is relevant to the study of membranes, showing not only the modification of the solid matrix but also highlighting pore fouling.
J. Vicente, Y. Wyart, P. Moulin. CHARACTERIZATION (TWO-DIMENSIONAL-THREE-DIMENSIONAL) OF CERAMIC MICROFILTRATION MEMBRANE BY SYNCHROTRON RADIATION: NEW AND ABRADED MEMBRANES. Journal of Porous Media, 2013, 16 (6), pp.537-545. ⟨hal-01459483⟩
Soglin Wang, Yvan Wyart, Jean Pérot, Fabrice Nauleau, Philippe Moulin. Study of the ageing of hollow fibers in an industrial module for ă drinking water production. Membrane Water Treatment, 2013, 4 (1), pp.53-67. ⟨hal-01464727⟩ Plus de détails...
In this study, ageing characteristics of an industrial hollow-fiber membrane module were investigated after 50 months of drinking water production. For this purpose, the industrial module was opened to make 18 smaller modules with hollow-fibers taken from different parts of the industrial module. These modules were probed by the use of a magnetic nanoparticle (NP) challenge test based on magnetic susceptibility (K) measurement of permeate. No magnetic susceptibility was detected in permeate when the challenge test was performed on an intact membrane ă module, indicating the complete retention of nanoparticles by the membrane. The compromised membrane module can be successfully detected by means of magnetic susceptibility measurement in permeate. So, this study clearly demonstrates that ageing of ultrafiltration membranes can be monitored by measuring the magnetic susceptibility of permeate from an ultrafiltration membrane module. These results showed that the hollow fibers in the center zones of the bundle would age faster than those in the outer zones around the bundle. This result is in agreement with numerical simulation (Daurelle et al. 2011).
Soglin Wang, Yvan Wyart, Jean Pérot, Fabrice Nauleau, Philippe Moulin. Study of the ageing of hollow fibers in an industrial module for ă drinking water production. Membrane Water Treatment, 2013, 4 (1), pp.53-67. ⟨hal-01464727⟩
Maud Villain, Ludiwine Clouzot, Gilles Guibaud, Benoît Marrot. Impact of oxygen cut off and starvation conditions on biological activity and physico-chemical properties of activated sludge. Environmental Technology, 2013, 34 (7), pp.901-910. ⟨10.1080/09593330.2012.722689⟩. ⟨hal-00995710⟩ Plus de détails...
Physico-chemical and biological parameters were monitored both throughout different oxygen cut off and starvation (OCS) times (6 h-72 h) and after the restoration of normal operational conditions. Sludge apparent viscosity and soluble extracellular polymeric substances (EPS) characteristics were measured to determine the activated sludge (AS) properties. Oxygen transfer, biological activity with specific oxygen uptake rate (SOUR) measurements during endogenous/exogenous conditions (without any external substrate/with external substrate consumption) and chemical oxygen demand (COD) removal were measured to assess the AS performances. During the different stress times, AS deflocculated as a decrease of apparent viscosity was observed and microorganisms biodegraded the released EPS to survive. After aeration return, and under endogenous conditions, size exclusion chromatographic fingerprints of soluble EPS were modified and macromolecules probably of type humic-like substances appeared in significant quantities. These new macromolecules presumably acted as biosurfactants. Consequently, the liquid surface tension, as well as the oxygen transfer rate (OTR), decreased. Under exogenous conditions, high biological activity (SOUR = 11.8 +/- 2.1 mg(O2 x g(MLVSS)(-1) x h(-1)) compensated the decrease of oxygen transfer. Finally, AS biomass maintained a constant COD degradation rate (15.7 +/- 1.9 mg(O2) x g(MLVSS)(-1) x h(-1)) before and after the disturbances for all times tested. This work demonstrates that AS microorganisms can counteract concomitant oxygen and nutrients shortage when the duration of such a condition does not exceed 72 h. Dissociation of endogenous/exogenous conditions appears to offer an ideal laboratory model to study EPS and biomass activity effects on oxygen transfer.
Maud Villain, Ludiwine Clouzot, Gilles Guibaud, Benoît Marrot. Impact of oxygen cut off and starvation conditions on biological activity and physico-chemical properties of activated sludge. Environmental Technology, 2013, 34 (7), pp.901-910. ⟨10.1080/09593330.2012.722689⟩. ⟨hal-00995710⟩
Josiane Nikiema, Alberto Figoli, Norbert Weissenbaker, Günter Langergraber, Benoît Marrot, et al.. Wastewater treatment practices in Africa : experiences from seven countries. Sustainable Sanitation Practice, 2013, 14, pp.26-34. ⟨hal-00995647⟩ Plus de détails...
In this paper, existing wastewater treatment practices in 7 African countries, i.e. Algeria, Burkina Faso, Egypt, Ghana, Morocco, Senegal and Tunisia, are reported. Data were collected by questioning wastewater treatment plants managers as well as treated wastewater users in 2012. This study showed that 0.2 to 63 L/d/person of wastewater are treated in these countries, with the higher levels obtained for North Africa. Technically, treatment plants (mostly activated sludge and waste stabilization ponds) deal with high organic loads, uncontrolled input, power cuts and increasing wastewater flow rates. Poor operation and maintenance (O&M), in part caused by the lack of funds, high energy costs and lack of re-investments, is also a serious reported issue. Consequently, treatment plants often deliver insufficient effluent quality, which negatively affects the environment and acceptability of stakeholders towards the treated water. Other challenges, such as water availability, long-term impacts, financial and social constraints, affecting the reuse, are also discussed. [authors abstract]
Josiane Nikiema, Alberto Figoli, Norbert Weissenbaker, Günter Langergraber, Benoît Marrot, et al.. Wastewater treatment practices in Africa : experiences from seven countries. Sustainable Sanitation Practice, 2013, 14, pp.26-34. ⟨hal-00995647⟩
C. Regula, Emilie Carretier, Yvan Wyart, M. Sergent, Geneviève Gésan-Guiziou, et al.. Drinking water ultrafiltration: state of the art and experimental designs approach. Desalination and Water Treatment, 2013, 51 (25-27), pp.4892-4900. ⟨10.1080/19443994.2013.795213⟩. ⟨hal-00995678⟩ Plus de détails...
During cleaning steps, ultrafiltration membranes are mechanically and chemically stressed. This can result in membrane degradations, failures, and be shut down for membrane replacement and therefore affect the production rate of the process and its sustainability. These phenomena raise the problem of necessary optimization of the cleaning procedures that have to tackle simultaneously, the best cleaning efficiency and the less detrimental procedures for the membranes. Despite the fact that aging is becoming a major issue between end-users, membrane manufacturers, and chemical product suppliers, there is considerably less literature dedicated to membrane aging than to cleaning. First, this study briefly reviews articles dedicated to aging damages involved by NaOCl and commercial detergents (especially on polysulfone ultrafiltration membrane). Then, the present study details the innovative way setup: "Designs of experiments" is used to provide additional data that help with a thorough understanding of membrane aging. Thus, contrary to the accelerated aging approach that is commonly used in membrane-aging researches (concentration per time of contact: "c × t parameter"), designs of experiments were used to organize at best the aging experiments in order to achieve a relevant establishment of an aging pattern. Results show that this scientific approach provides a satisfying and reliable pattern to simulate membrane aging in function of the chosen chemical parameters.
C. Regula, Emilie Carretier, Yvan Wyart, M. Sergent, Geneviève Gésan-Guiziou, et al.. Drinking water ultrafiltration: state of the art and experimental designs approach. Desalination and Water Treatment, 2013, 51 (25-27), pp.4892-4900. ⟨10.1080/19443994.2013.795213⟩. ⟨hal-00995678⟩
Philippe Moulin, Camille Regula, Emilie Carretier, Yvan Wyart, M. Sergent, et al.. Influence of commercial detergents on UF membrane ageing: case of drinking water. Medical Engineering & Physics, 2013, 4 (1), pp.27-51. ⟨10.12989/mwt.2013.4.1.027⟩. ⟨hal-00995692⟩ Plus de détails...
During cleaning steps, ultrafiltration membranes are mechanically and chemically stressed. This may result in membrane degradations and failures. In this paper, polysulfone membranes were used to evaluate membrane deteriorations by commercial detergents in static conditions. Ageing of the membrane was simulated by immersing samples in solutions containing commercial detergents with various concentrations, temperatures and times defined by experimental designs. Indeed, an innovative approach in the chemical membranes ageing researches, based on methodological tools, was used in order to achieve significant ageing experiments without using an accelerated ageing protocol. The macroscopic changes were monitored by permeability measurements and mechanical strength tests coupled with a microscopic characterization by ATR-FTIR and HRSEM. The present work details results obtained for three commercial detergents: an alkaline, an acidic and an enzymatic detergent. It was found that the detergents used in the industrial advised conditions (concentration, temperature and time of contact) were not detrimental for membrane properties (permeability and elongation at break) and so for the quality of the produced water. Over the industrial cumulated time of contact, different ageing effects can be observed and compared with the ones induced by NaOCl.
Philippe Moulin, Camille Regula, Emilie Carretier, Yvan Wyart, M. Sergent, et al.. Influence of commercial detergents on UF membrane ageing: case of drinking water. Medical Engineering & Physics, 2013, 4 (1), pp.27-51. ⟨10.12989/mwt.2013.4.1.027⟩. ⟨hal-00995692⟩
Maud Villain, Benoît Marrot. Influence of sludge retention time at constant food to microorganisms ratio on membrane bioreactor performances under stable and unstable state conditions. Bioresource Technology, 2013, 128, pp.134-144. ⟨10.1016/j.biortech.2012.10.108⟩. ⟨hal-00995702⟩ Plus de détails...
Food to microorganisms ratio (F/M) and sludge retention time (SRT) are known to affect in different ways biomass growth, bioactivities and foulants characteristics. Thus the aim of this study was to dissociate the effects of SRT from those of F/M ratio on lab-scale membrane bioreactors performances during stable and unstable state. Two acclimations were stabilized at a SRT of either 20 or 50 d with a constant F/M ratio of 0.2 kgCOD kgMLVSS−1 d−1. During stable state, a higher N-NH4+ removal rate (78%) was obtained at SRT of 50 d as an easier autotroph development was observed. Soluble microbial products (SMPs) release was double at 50 d with a majority of polysaccharides (49% of total SMP). The unstable conditions consisted in F/M ratio changes and operation without air and nutrient. Autotrophs were highly affected by the tested disturbances and SMP retention on membrane surface exhibited consistent changes during the performed stresses.
Maud Villain, Benoît Marrot. Influence of sludge retention time at constant food to microorganisms ratio on membrane bioreactor performances under stable and unstable state conditions. Bioresource Technology, 2013, 128, pp.134-144. ⟨10.1016/j.biortech.2012.10.108⟩. ⟨hal-00995702⟩
José Vicente, Yvan Wyart, Philippe Moulin. CHARACTERIZATION (TWO-DIMENSIONAL-THREE-DIMENSIONAL) OF CERAMIC ă MICROFILTRATION MEMBRANE BY SYNCHROTRON RADIATION: NEW AND ABRADED ă MEMBRANES. Journal of Porous Media, 2013, 16 (6), pp.537-545. ⟨hal-01464725⟩ Plus de détails...
Membranes are used in many industrial fields and, when performances of ă these processes decrease, the issue of modifying the porous structure is ă often raised. Many optical or microscopic techniques allow us to ă perfectly characterize the membrane's surface but very few allow the ă characterization of its depth. Through the comparison between a new and ă an abraded membrane, this paper presents the post-processing of images ă obtained by radiation synchrotron and associated dimensions that can be ă obtained by three-dimensional (3D) reconstruction. Thus, the whole ă thickness of the membrane is obtained from the skin to the permeate exit ă and a morphological analysis of the solid and pore phase is proposed at ă the heart of the membrane. The two-dimensional characterization allows ă one to perfectly define the mapping of the pores and to quantify by ă different comparisons the modification of the skin of a membrane after ă usage. The 3D characterization by X-ray tomography at the scale of the ă thickness of the membrane allows us to obtain the granulometric ă distribution of the different phases of the porous matrix. This ability ă to characterize both the solid and the pores is relevant to the study of ă membranes, showing not only the modification of the solid matrix but ă also highlighting pore fouling.
José Vicente, Yvan Wyart, Philippe Moulin. CHARACTERIZATION (TWO-DIMENSIONAL-THREE-DIMENSIONAL) OF CERAMIC ă MICROFILTRATION MEMBRANE BY SYNCHROTRON RADIATION: NEW AND ABRADED ă MEMBRANES. Journal of Porous Media, 2013, 16 (6), pp.537-545. ⟨hal-01464725⟩
Gregory Cano, P. Steinle, Jean-Vincent Daurelle, Yvan Wyart, K. Glucina, et al.. Determination of pressure and velocity fields in ultrafiltration membrane modules used in drinking water production. Journal of Membrane Science, 2013, 431, pp.221-232. ⟨10.1016/j.memsci.2012.11.082⟩. ⟨hal-00996064⟩ Plus de détails...
During the process of drinking water production using a hollow fiber ultrafiltration module, the configuration generally used is an inside-out filtration in dead-end mode. In this configuration the energy consumption is limited by outside-in backwashes. Enlarging the membrane packing density and permeability raises the permeate flow and results in an increase of the module compactness. However, this strongly modifies the hydrodynamics into the module. This study allows us to determine the pressure and velocity fields in the hollow fiber network of the modules. The geometry of the module and the membranes, the membrane permeability and compactness as well as the operating entry values such as filtration or backwash pressures and gravity were taken into account. Therefore, whatever these parameters may be, it is possible to determine the pressure and velocity fields in an ultrafiltration module. It was shown that during an inside-out filtration and for the three industrial tested module configurations the hollow fibers work in a homogeneous way ±0.4%. However, in the case of the backwash, a greater heterogeneity may appear. Finally, the reliability of the model proposed in this paper is confirmed by comparing its numerical results with experimental data.
Gregory Cano, P. Steinle, Jean-Vincent Daurelle, Yvan Wyart, K. Glucina, et al.. Determination of pressure and velocity fields in ultrafiltration membrane modules used in drinking water production. Journal of Membrane Science, 2013, 431, pp.221-232. ⟨10.1016/j.memsci.2012.11.082⟩. ⟨hal-00996064⟩
Guillaume Zahnd, Didier Vray, André Sérusclat, Djhianne Alibay, Mark Bartold, et al.. Longitudinal Displacement of the Carotid Wall and Cardiovascular Risk Factors: Associations with Aging, Adiposity, Blood Pressure and Periodontal Disease Independent of Cross-Sectional Distensibility and Intima-Media Thickness. Ultrasound in Medicine & Biology, 2012, 38 (10), pp.1705-1715. ⟨10.1016/j.ultrasmedbio.2012.05.004⟩. ⟨hal-01991279⟩ Plus de détails...
Guillaume Zahnd, Didier Vray, André Sérusclat, Djhianne Alibay, Mark Bartold, et al.. Longitudinal Displacement of the Carotid Wall and Cardiovascular Risk Factors: Associations with Aging, Adiposity, Blood Pressure and Periodontal Disease Independent of Cross-Sectional Distensibility and Intima-Media Thickness. Ultrasound in Medicine & Biology, 2012, 38 (10), pp.1705-1715. ⟨10.1016/j.ultrasmedbio.2012.05.004⟩. ⟨hal-01991279⟩
Nan Wu, Yvan Wyart, Jérôme Rose, B Angeletti, Philippe Moulin. Influence of wastewater treatment from microelectronics industry on concentrations and partitioning of elements in a river. Advances in Biomedical Engineering, 2012, 7, pp.121-129. ⟨hal-00997222⟩ Plus de détails...
The influence of wastewater treatment plant (WWTP) effluents from a microelectronic industrial zone (IZ) on natural waters (Arc river) was investigated. Surface water samples from upstream, downstream, and WWTP effluents were analyzed by distinguishing 'background' geogenic sources from anthropological sources. Amongst the five elements (Si, V, Se, Sr, U) analyzed, Si increased in concentration (in raw water) in the downstream compared to upstream, which indicated a discharge of Si from anthropological sources (IZ site) into receiving waters, even if no contaminated levels were reached. Meanwhile, the anthropogenic inputs have an important influence on the distribution of elemental partitioning among large particulates (>18 μm), particulates (0.22-18 μm), colloidal/nanoparticle (10 kDa-0.22 μm) and truly dissolved fractions (<10 kDa), which were distinguished by filter cartridges and membranes with decreasing cut-offs.
Nan Wu, Yvan Wyart, Jérôme Rose, B Angeletti, Philippe Moulin. Influence of wastewater treatment from microelectronics industry on concentrations and partitioning of elements in a river. Advances in Biomedical Engineering, 2012, 7, pp.121-129. ⟨hal-00997222⟩
Emilie Carretier, H. Marteau, Philippe Moulin. Development of a nuclearized pilot for the purification of radioactive water: dead end filtration with ceramic membrane. Procedia Engineering, 2012, 44, pp.1718-1720. ⟨10.1016/j.proeng.2012.08.921⟩. ⟨hal-00997167⟩ Plus de détails...
Emilie Carretier, H. Marteau, Philippe Moulin. Development of a nuclearized pilot for the purification of radioactive water: dead end filtration with ceramic membrane. Procedia Engineering, 2012, 44, pp.1718-1720. ⟨10.1016/j.proeng.2012.08.921⟩. ⟨hal-00997167⟩
Imen Khouni, Benoît Marrot, Raja Ben Amar. Treatment of reconstituted textile wastewater containing a reactive dye in an aerobic sequencing batch reactor using a novel bacterial consortium. Separation and Purification Technology, 2012, 87, pp.110-119. ⟨10.1016/j.seppur.2011.11.030⟩. ⟨hal-00997237⟩ Plus de détails...
Dyes released by the textile industries pose a threat to the environmental safety. Recently, dye decolourisation through biological means has gained momentum as these methods are cheap and can be applied to a wide range of dyes. The objective of this study was to investigate the biological decolourisation of a widely used textile reactive dye in Tunisia, the Blue Bezaktiv S-GLD 150 dye, using a sequencing batch reactor (SBR). SBR was inoculated with an acclimated novel microbial consortia 'Bx'. Decolourisation efficiency was studied for different volumetric dye loading rates (3-20 g dye/m3*d) at room temperature, under aerobic conditions and at pH 7. The experimental results indicated that Bx displayed highest purification capabilities under aerobic conditions giving maximum decolourisation rates in the range of 88-97% and COD removal percentages of about 95-98% when volumetric dye loading rates were under 15 g dye/m3*d. Whereas, when volumetric dye loading rates were increased to 20 g dye/m3*d, the means rates of decolourisation and COD removal were decreased to 70% and 90% respectively. Obtained results indicate that the volumetric dye loading rate can influence the efficiency of dye removal through a sequencing batch reactor.
Imen Khouni, Benoît Marrot, Raja Ben Amar. Treatment of reconstituted textile wastewater containing a reactive dye in an aerobic sequencing batch reactor using a novel bacterial consortium. Separation and Purification Technology, 2012, 87, pp.110-119. ⟨10.1016/j.seppur.2011.11.030⟩. ⟨hal-00997237⟩
A. Soric, R. Cesaro, P. Perez, E. Guiol, P. Moulin. Eausmose Project–desalination by Reverse Osmosis and Batteryless Solar Energy: Design for a 1m3 Per Day Delivery. Procedia Engineering, 2012, 44, pp.1465 - 1467. ⟨10.1016/j.proeng.2012.08.830⟩. ⟨hal-01889584⟩ Plus de détails...
A. Soric, R. Cesaro, P. Perez, E. Guiol, P. Moulin. Eausmose Project–desalination by Reverse Osmosis and Batteryless Solar Energy: Design for a 1m3 Per Day Delivery. Procedia Engineering, 2012, 44, pp.1465 - 1467. ⟨10.1016/j.proeng.2012.08.830⟩. ⟨hal-01889584⟩
Jérôme Vicente, Yvan Wyart, Philippe Moulin. From 2D to 3D characterization of ceramic membranes. Procedia Engineering, 2012, 44, pp.517-520. ⟨10.1016/j.proeng.2012.08.472⟩. ⟨hal-00996610⟩ Plus de détails...
Jérôme Vicente, Yvan Wyart, Philippe Moulin. From 2D to 3D characterization of ceramic membranes. Procedia Engineering, 2012, 44, pp.517-520. ⟨10.1016/j.proeng.2012.08.472⟩. ⟨hal-00996610⟩
Compost liquor was treated using a combination of physico-chemical processes: (i) lime precipitation, (ii) filtration on a rotary drum vacuum precoat filter, (iii) ultrafiltration, and (iv) reverse osmosis. Laboratory Jar tests showed the interest of using lime to precipitate compost liquor. Yields of ammonium removal up to 90% were obtained for an optimum lime concentration of 6 g/ L. A test was run at semi-industrial scale on 400 L of highly loaded compost liquor (COD: 15,800 mg/L, ammoniacal pollution: 18,433 mg NH4+-N/L, conductivity: 74,000 μS/cm) to demonstrate the potential of the treatment process proposed. Outstanding purification yields were obtained, especially 95% of COD removal and 93% of ammoniacal pollution removal.
Jérémy Gagnaire, Laurent Chapon, Philippe Moulin, Benoît Marrot. Physico-chemical treatment applied to compost liquor: feasibility study. Journal of Industrial and Engineering Chemistry, 2012, 18 (4), pp.1522-1528. ⟨10.1016/j.jiec.2012.02.016⟩. ⟨hal-00997209⟩
Journal: Journal of Industrial and Engineering Chemistry
Q. Derekx, Patrice Bacchin, D. Veyret, K. Glucina, Philippe Moulin. Numerical and Experimental Study of Fouling in Microfluidic Channels and Microfiltration Membranes. Procedia Engineering, 2012, 44, pp.54 - 56. ⟨10.1016/j.proeng.2012.08.304⟩. ⟨hal-01889585⟩ Plus de détails...
Q. Derekx, Patrice Bacchin, D. Veyret, K. Glucina, Philippe Moulin. Numerical and Experimental Study of Fouling in Microfluidic Channels and Microfiltration Membranes. Procedia Engineering, 2012, 44, pp.54 - 56. ⟨10.1016/j.proeng.2012.08.304⟩. ⟨hal-01889585⟩
Jean-Philippe Bonnet, C. Pinatel, Philippe Moulin, J. Artaud. Estimation expérimentale du temps de décantation lors du stockage de trois huiles d'olive françaises : première approche. Le nouvel olivier, 2012, 87, pp.5-11. ⟨hal-00996246⟩ Plus de détails...
Jean-Philippe Bonnet, C. Pinatel, Philippe Moulin, J. Artaud. Estimation expérimentale du temps de décantation lors du stockage de trois huiles d'olive françaises : première approche. Le nouvel olivier, 2012, 87, pp.5-11. ⟨hal-00996246⟩
Gregory Cano, Yvan Wyart, Jean-Vincent Daurelle, K. Glucina, D. Bourdiol, et al.. Determination of pressure and velocity in a dead-end inside-out membrane module used in drinking water production. Procedia Engineering, 2012, 44, pp.229-232. ⟨10.1016/j.proeng.2012.08.369⟩. ⟨hal-00997172⟩ Plus de détails...
Gregory Cano, Yvan Wyart, Jean-Vincent Daurelle, K. Glucina, D. Bourdiol, et al.. Determination of pressure and velocity in a dead-end inside-out membrane module used in drinking water production. Procedia Engineering, 2012, 44, pp.229-232. ⟨10.1016/j.proeng.2012.08.369⟩. ⟨hal-00997172⟩
C. Regula, Emilie Carretier, Yvan Wyart, M. Sergent, Geneviève Gésan-Guiziou, et al.. Ageing of polysulfone ultrafiltation membranes for drinking water production in contact with sodium hypochlorite or formulated detergents. Procedia Engineering, 2012, 44, pp.1038-1040. ⟨10.1016/j.proeng.2012.08.668⟩. ⟨hal-01026337⟩ Plus de détails...
C. Regula, Emilie Carretier, Yvan Wyart, M. Sergent, Geneviève Gésan-Guiziou, et al.. Ageing of polysulfone ultrafiltation membranes for drinking water production in contact with sodium hypochlorite or formulated detergents. Procedia Engineering, 2012, 44, pp.1038-1040. ⟨10.1016/j.proeng.2012.08.668⟩. ⟨hal-01026337⟩
P. Hamon, Philippe Moulin, L. Ercolei, Bruno Lacarelle, Benoît Marrot. Preliminary study of oncologic ward wastewatertreatment by membrane bioreactor. Procedia Engineering, 2012, 44, pp.855-856. ⟨10.1016/j.proeng.2012.08.598⟩. ⟨hal-00997160⟩ Plus de détails...
P. Hamon, Philippe Moulin, L. Ercolei, Bruno Lacarelle, Benoît Marrot. Preliminary study of oncologic ward wastewatertreatment by membrane bioreactor. Procedia Engineering, 2012, 44, pp.855-856. ⟨10.1016/j.proeng.2012.08.598⟩. ⟨hal-00997160⟩
Georgette Rebollar-Perez, Emilie Carretier, Nicolas Lesage, Philippe Moulin. Vapour permeation of VOC emitted from petroleum activities: application for low concentrations. Journal of Industrial and Engineering Chemistry, 2012, 18 (4), pp.1339-1352. ⟨10.1016/j.jiec.2012.01.039⟩. ⟨hal-00997230⟩ Plus de détails...
This study deals with the application of vapour permeation on the abatement of air polluted with VOC, from low to medium concentrations. Toluene, butadiene and propylene were chosen as model compounds. On a first part of the study, the permeation of single VOC, binary and ternary VOC/air mixtures was performed at different flow rates and VOC concentrations. The permeate flux, permeance, enrichment factor, separation efficiency and the recovery were determined. The experimental results were compared to those obtained with a mathematical model, allowing the calculation of the membrane area required to eliminate 95% of the feed VOC content.
Georgette Rebollar-Perez, Emilie Carretier, Nicolas Lesage, Philippe Moulin. Vapour permeation of VOC emitted from petroleum activities: application for low concentrations. Journal of Industrial and Engineering Chemistry, 2012, 18 (4), pp.1339-1352. ⟨10.1016/j.jiec.2012.01.039⟩. ⟨hal-00997230⟩
Journal: Journal of Industrial and Engineering Chemistry
Maud Villain, Benoît Marrot. Correlation between fouling propensity of soluble extracellular polymeric substances, removal efficiencies and sludge metabolic activity altered by different stress conditions. Influence of sludge retention time. Procedia Engineering, 2012, 44, pp.1127-1131. ⟨10.1016/j.proeng.2012.08.701⟩. ⟨hal-00997198⟩ Plus de détails...
Songlin Wang, Yvan Wyart, J. Perot, F. Nauleau, Philippe Moulin. Impact of hollow ffiber position in an industrial UF module on the membrane ageing. Procedia Engineering, 2012, 44, pp.1632-1635. ⟨10.1016/j.proeng.2012.08.892⟩. ⟨hal-00996316⟩ Plus de détails...
Songlin Wang, Yvan Wyart, J. Perot, F. Nauleau, Philippe Moulin. Impact of hollow ffiber position in an industrial UF module on the membrane ageing. Procedia Engineering, 2012, 44, pp.1632-1635. ⟨10.1016/j.proeng.2012.08.892⟩. ⟨hal-00996316⟩
Camille Delcroix, Jean-Philippe Bonnet, M. Etienne, Philippe Moulin. Filtration of pharmaceutical polysaccharides: from the mass transfer to the industrial development. Procedia Engineering, 2012, 44, pp.768-771. ⟨10.1016/j.proeng.2012.08.563⟩. ⟨hal-00997188⟩ Plus de détails...
Camille Delcroix, Jean-Philippe Bonnet, M. Etienne, Philippe Moulin. Filtration of pharmaceutical polysaccharides: from the mass transfer to the industrial development. Procedia Engineering, 2012, 44, pp.768-771. ⟨10.1016/j.proeng.2012.08.563⟩. ⟨hal-00997188⟩
Nan Wu, Yvan Wyart, Jérôme Rose, B Angeletti, Philippe Moulin. Influence of wastewater treatment from microelectronics industry on concentrations and partitioning of elements in a river. Advances in Biomedical Engineering, 2012, 7, pp.121-129. ⟨hal-00997222⟩ Plus de détails...
The influence of wastewater treatment plant (WWTP) effluents from a microelectronic industrial zone (IZ) on natural waters (Arc river) was investigated. Surface water samples from upstream, downstream, and WWTP effluents were analyzed by distinguishing 'background' geogenic sources from anthropological sources. Amongst the five elements (Si, V, Se, Sr, U) analyzed, Si increased in concentration (in raw water) in the downstream compared to upstream, which indicated a discharge of Si from anthropological sources (IZ site) into receiving waters, even if no contaminated levels were reached. Meanwhile, the anthropogenic inputs have an important influence on the distribution of elemental partitioning among large particulates (>18 μm), particulates (0.22-18 μm), colloidal/nanoparticle (10 kDa-0.22 μm) and truly dissolved fractions (<10 kDa), which were distinguished by filter cartridges and membranes with decreasing cut-offs.
Nan Wu, Yvan Wyart, Jérôme Rose, B Angeletti, Philippe Moulin. Influence of wastewater treatment from microelectronics industry on concentrations and partitioning of elements in a river. Advances in Biomedical Engineering, 2012, 7, pp.121-129. ⟨hal-00997222⟩
Audrey Soric, Rémy Césaro, P. Perez, E. Guiol, Philippe Moulin. Eausmose project: desalination by reverse osmosis and batteryless solar energy: design for a 1m3 per day delivery. Desalination, 2012, 301, pp.67-74. ⟨10.1016/j.desal.2012.06.013⟩. ⟨hal-00992892⟩ Plus de détails...
The desalination of seawater or brackish water sees its production capacity increases by the day. In the last 40 years significant progress has been made to reduce production costs and produce drinking water with processes more and more environmentally friendly. Within this framework, a portable desalination prototype with a low environmental impact has been developed and tested. It is based on a reverse osmosis process powered by solar panels without using an intermediate storage battery. The development of an effective energy regulator could lead to a continuous production of desalinated water in the order of 1 m3/d.
Audrey Soric, Rémy Césaro, P. Perez, E. Guiol, Philippe Moulin. Eausmose project: desalination by reverse osmosis and batteryless solar energy: design for a 1m3 per day delivery. Desalination, 2012, 301, pp.67-74. ⟨10.1016/j.desal.2012.06.013⟩. ⟨hal-00992892⟩
Yvan Wyart, Serge Nitsche, Damien Chaudanson, Karl Glucina, Philippe Moulin. The use of HRSEM to characterize new and aged membranes in drinking ă water production. Membrane Water Treatment, 2011, 2 (4), pp.251-266. ⟨hal-01464751⟩ Plus de détails...
This work deals with the use of High Resolution Scanning Electron Microscopy (HRSEM) to verify ultrafiltration membrane selectivity at the end of the production line as well as membrane ageing. The first part of this work is focused on new membranes. It is shown that it is better to use sputtering metallization than vacuum deposition, as this latter technique entails thermal damage to the skin layer. Moreover, the impact of the metallization layer on the determination of the membrane pore size is studied and it is observed that no impact of the metallization step can be clearly defined for a metallization layer ranging from 3 to 12 nm. For example, an average pore size of 16.9 nm and a recovery rate of 6.5 % are observed for a 150 kDa cellulose acetate membrane. These results are in agreement with those given by the manufacturer: pore size ă ranging from 10 to 15 nm and recovery rate ranging from 5 to 10 %. The second part of this work focuses on the study of membrane ageing. A PVDF ă hollow fibre membrane is studied. It is shown that a 65 % decrease in the permeate flux can be linked to a decrease in the number of pores at the surface of the membrane and a decrease in the recovery rate. In conclusion, a mapping of the pores is performed for several new hollow fibre membranes used to produce drinking water, made of different materials, with different geometries and molecular weight cut-off. These results provide reference data that will help better understand the phenomena of membrane fouling and membrane ageing.
Yvan Wyart, Serge Nitsche, Damien Chaudanson, Karl Glucina, Philippe Moulin. The use of HRSEM to characterize new and aged membranes in drinking ă water production. Membrane Water Treatment, 2011, 2 (4), pp.251-266. ⟨hal-01464751⟩
Jean-Philippe Bonnet, Laurie Devesvre, Jacques Artaud, Philippe Moulin. Dynamic viscosity of olive oil as a function of composition and temperature: A first approach. European Journal of Lipid Science and Technology, 2011, 113 (8), pp.1019-1025. ⟨10.1002/ejlt.201000363⟩. ⟨hal-01295371⟩ Plus de détails...
Knowledge of the viscosity of virgin olive oils (VOOs) is of great importance for the design of pilot plants, to determine the time required for the settling of particles at the end of the production chain and from a sensory view point. The dynamic viscosities of French VOOs from four different cultivars (‘Aglandau’, ‘Bouteillan’, ‘Salonenque’ and ‘Tanche’) were studied as a function of their fatty acid and TAG compositions and of the temperature [10–50°C]. These four VOOs had different TAG and fatty acid compositions representative of the range of compositional variations in the main French oils. Their viscosities were similar, although small but measurable differences that depended on their compositions were apparent. All the VOO samples exhibited the same dynamic viscosity pattern over temperature. For a given temperature, the viscosity difference was the greatest between Aglandau and Salonenque oils, Aglandau being the oil with the highest viscosity. The correlation between temperature and viscosity was highlighted by an Arrhenius model for this Newtonian fluid. The Arrhenius activation energy was correlated (R2 = 0.993) with the percentage of triolein, the main TAG in olive oil.
Jean-Philippe Bonnet, Laurie Devesvre, Jacques Artaud, Philippe Moulin. Dynamic viscosity of olive oil as a function of composition and temperature: A first approach. European Journal of Lipid Science and Technology, 2011, 113 (8), pp.1019-1025. ⟨10.1002/ejlt.201000363⟩. ⟨hal-01295371⟩
Journal: European Journal of Lipid Science and Technology
Jean-Philippe Bonnet, Laurie Devesvre, Jacques Artaud, Philippe Moulin. Dynamic viscosity of olive oil as a function of composition and temperature: A first approach. European Journal of Lipid Science and Technology, 2011, 113 (8), pp.1019-1025. ⟨10.1002/ejlt.201000363⟩. ⟨hal-01295371⟩ Plus de détails...
Knowledge of the viscosity of virgin olive oils (VOOs) is of great importance for the design of pilot plants, to determine the time required for the settling of particles at the end of the production chain and from a sensory view point. The dynamic viscosities of French VOOs from four different cultivars (‘Aglandau’, ‘Bouteillan’, ‘Salonenque’ and ‘Tanche’) were studied as a function of their fatty acid and TAG compositions and of the temperature [10–50°C]. These four VOOs had different TAG and fatty acid compositions representative of the range of compositional variations in the main French oils. Their viscosities were similar, although small but measurable differences that depended on their compositions were apparent. All the VOO samples exhibited the same dynamic viscosity pattern over temperature. For a given temperature, the viscosity difference was the greatest between Aglandau and Salonenque oils, Aglandau being the oil with the highest viscosity. The correlation between temperature and viscosity was highlighted by an Arrhenius model for this Newtonian fluid. The Arrhenius activation energy was correlated (R2 = 0.993) with the percentage of triolein, the main TAG in olive oil.
Jean-Philippe Bonnet, Laurie Devesvre, Jacques Artaud, Philippe Moulin. Dynamic viscosity of olive oil as a function of composition and temperature: A first approach. European Journal of Lipid Science and Technology, 2011, 113 (8), pp.1019-1025. ⟨10.1002/ejlt.201000363⟩. ⟨hal-01295371⟩
Journal: European Journal of Lipid Science and Technology
Several microscopic and scattering techniques at different observation scales (from atomic to macroscopic) were used to characterize both surface and bulk properties of four new flat-sheet polyethersulfone (PES) membranes (10, 30, 100 and 300 kDa) and new 100 kDa hollow fibers (PVDF). Scanning Electron Microscopy (SEM) with “in lens” detection was used to obtain information on the pore sizes of the skin layers at the atomic scale. White Light Interferometry (WLI) and Atomic Force Microscopy (AFM) using different scales (for WLI: windows: 900 × 900 µm2 and 360 × 360 µm2; number of points: 1024; for AFM: windows: 50 × 50 µm2 and 5 × 5 µm2; number of points: 512) showed that the membrane roughness increases markedly with the observation scale and that there is a continuity between the different scan sizes for the determination of the RMS roughness. High angular resolution ellipsometric measurements were used to obtain the signature of each cut-off and the origin of the scattering was identified as coming from the membrane bulk.
Rahma Tamime, Yvan Wyart, Laure Siozade, Isabelle Baudin, Carole Deumie, et al.. Membrane Characterization by Microscopic and Scattering Methods: Multiscale Structure. Membranes, 2011, 1 (2), pp.91-97. ⟨10.3390/membranes1020091⟩. ⟨hal-01270839⟩
Several microscopic and scattering techniques at different observation scales (from atomic to macroscopic) were used to characterize both surface and bulk properties of four new flat-sheet polyethersulfone (PES) membranes (10, 30, 100 and 300 kDa) and new 100 kDa hollow fibers (PVDF). Scanning Electron Microscopy (SEM) with “in lens” detection was used to obtain information on the pore sizes of the skin layers at the atomic scale. White Light Interferometry (WLI) and Atomic Force Microscopy (AFM) using different scales (for WLI: windows: 900 × 900 µm2 and 360 × 360 µm2; number of points: 1024; for AFM: windows: 50 × 50 µm2 and 5 × 5 µm2; number of points: 512) showed that the membrane roughness increases markedly with the observation scale and that there is a continuity between the different scan sizes for the determination of the RMS roughness. High angular resolution ellipsometric measurements were used to obtain the signature of each cut-off and the origin of the scattering was identified as coming from the membrane bulk.
Rahma Tamime, Yvan Wyart, Laure Siozade, Isabelle Baudin, Carole Deumie, et al.. Membrane Characterization by Microscopic and Scattering Methods: Multiscale Structure. Membranes, 2011, 1 (2), pp.91-97. ⟨10.3390/membranes1020091⟩. ⟨hal-01270839⟩
Q. Derekx, P. Bacchin, D. Veyret, K. Glucina, Philippe Moulin. Simulation of particle capture in a microfiltration membrane. Water Science and Technology, IWA Publishing, 2011, 64 (6), pp.1368-1373. ⟨10.2166/wst.2011.349⟩. ⟨hal-01026438⟩ Plus de détails...
The present study takes an interest in the description of the fouling mechanisms by a numerical approach at the microscopic scale. At first, an X-ray tomography has enabled the modelling of the membrane structure for the numerical simulations. Next, for different particle size, a same volume of particles has been sent in the modelled membrane and the final permeability has been computed. Thus, the influence of the particle size on the fouling has been seen. An observation of the particles penetration in the membrane has been realised to detail this influence. The Hermia relations were used in order to determinate the predominant fouling mechanism or the succession of predominant fouling mechanisms. But, without an accurate calculation of the first derivative, it is not possible to define cleanly the predominant fouling mechanism for a low filtered volume. Nevertheless, the perspectives of the local approach with the numerical simulation seem interesting.
Q. Derekx, P. Bacchin, D. Veyret, K. Glucina, Philippe Moulin. Simulation of particle capture in a microfiltration membrane. Water Science and Technology, IWA Publishing, 2011, 64 (6), pp.1368-1373. ⟨10.2166/wst.2011.349⟩. ⟨hal-01026438⟩
Yvan Wyart, S. Nitsche, Damien Chaudanson, K. Glucina, Philippe Moulin. The use of HRSEM to characterize new and aged membranes in drinking water production. Membrane Water Treatment, 2011, 2 (4), pp.251-266. ⟨10.12989/mwt.2011.2.4.251⟩. ⟨hal-01026352⟩ Plus de détails...
This work deals with the use of High Resolution Scanning Electron Microscopy (HRSEM) to verify ultrafiltration membrane selectivity at the end of the production line as well as membrane ageing. The first part of this work is focused on new membranes. It is shown that it is better to use sputtering metallization than vacuum deposition, as this latter technique entails thermal damage to the skin layer. Moreover, the impact of the metallization layer on the determination of the membrane pore size is studied and it is observed that no impact of the metallization step can be clearly defined for a metallization layer ranging from 3 to 12 nm. For example, an average pore size of 16.9 nm and a recovery rate of 6.5 % are observed for a 150 kDa cellulose acetate membrane. These results are in agreement with those given by the manufacturer: pore size ranging from 10 to 15 nm and recovery rate ranging from 5 to 10 %. The second part of this work focuses on the study of membrane ageing. A PVDF hollow fibre membrane is studied. It is shown that a 65 % decrease in the permeate flux can be linked to a decrease in the number of pores at the surface of the membrane and a decrease in the recovery rate. In conclusion, a mapping of the pores is performed for several new hollow fibre membranes used to produce drinking water, made of different materials, with different geometries and molecular weight cut-off. These results provide reference data that will help better understand the phenomena of membrane fouling and membrane ageing.
Yvan Wyart, S. Nitsche, Damien Chaudanson, K. Glucina, Philippe Moulin. The use of HRSEM to characterize new and aged membranes in drinking water production. Membrane Water Treatment, 2011, 2 (4), pp.251-266. ⟨10.12989/mwt.2011.2.4.251⟩. ⟨hal-01026352⟩
Clémence Coetsier, Fabrice Testa, Emilie Carretier, M. Ennahali, B. Laborie, et al.. Static dissolution rate of tungsten film versus chemical adjustments of a reused slurry for chemical mechanical polishing. Applied Surface Science, 2011, 257 (14), pp.6163-6170. ⟨10.1016/j.apsusc.2011.02.023⟩. ⟨hal-01026413⟩ Plus de détails...
Tungsten is widely used as deposited layer for the multi-level interconnection structures of wafers. The chemical composition of abrasive slurry plays an important role in chemical mechanical polishing (CMP) process. Removal of tungsten is driven by complex oxidation mechanisms between slurry components. The slurry for tungsten CMP generally contains oxidizer, iron catalyst, complexing agents and stabilizers in a pH adjusted solution of abrasive particles. Interaction between iron complex and H2O2 in the slurry is the main factor governing the chemical mode of material removal, oxidation potencies and kinetics. In this study, we investigate the effects of chemical additives in silica (SiO2)-based slurry on the removal rate of the tungsten film. Experiments were carried out in static batch as a preliminary study to understand and optimize chemical mechanisms in CMP-Tungsten process. Experiment designs were conducted to understand the influence of the chemical additives on the main performances of W-CMP. Used slurry, concentrated and retreated with chemical adjustments, is compared to the original slurry as a reference.
Clémence Coetsier, Fabrice Testa, Emilie Carretier, M. Ennahali, B. Laborie, et al.. Static dissolution rate of tungsten film versus chemical adjustments of a reused slurry for chemical mechanical polishing. Applied Surface Science, 2011, 257 (14), pp.6163-6170. ⟨10.1016/j.apsusc.2011.02.023⟩. ⟨hal-01026413⟩
M. R. Skilton, L. Boussel, F. Bonnet, Samuel Bernard, P. C. Douek, et al.. Carotid intima-media and adventitial thickening: comparison of new and established ultrasound and magnetic resonance imaging techniques. Atherosclerosis, 2011, 215 (2), pp.405--410. ⟨hal-02076786⟩ Plus de détails...
Carotid intima-media thickness is a well established non-invasive surrogate marker of cardiovascular disease, however there is evidence that structural modification of the arterial adventitia also accompanies cardiovascular risk factors and might be involved causally in atherosclerosis. We sought to determine the relative contributions of the intima-media and adventitia to variation in ultrasound and magnetic resonance derived measures of carotid wall thickness.\ Carotid ultrasound and magnetic resonance imaging were undertaken in 20 participants. Carotid intima-media thickness, carotid extra-media thickness (which incorporates the arterial adventitia) and total wall thickness (a combined near-wall intima-media thickness and carotid extra-media thickness) using high-resolution ultrasound, and wall thickness using magnetic resonance imaging, were obtained.\ All ultrasound-derived measures of the arterial wall thickness were highly correlated with wall thickness by magnetic resonance imaging (all P<0.001); as expected the total wall thickness by ultrasound measure was most tightly correlated (correlation coefficient=0.814, P<0.0001). In multivariable models, there was evidence that both carotid intima-media thickness and carotid extra-media thickness contributed independently to the variance in wall thickness by magnetic resonance imaging, especially for the most severe focal thickening. Measures of carotid wall thickness that incorporated all three layers of the arterial wall were more closely correlated with the number of cardiovascular risk factors than carotid intima-media thickness alone.\ These results indicate that the arterial adventitia is an important contributor to the wall thickness measure derived by magnetic resonance imaging, and that carotid extra-media thickness likely provides additional information concerning arterial structure than that obtained from carotid intima-media thickness alone.
M. R. Skilton, L. Boussel, F. Bonnet, Samuel Bernard, P. C. Douek, et al.. Carotid intima-media and adventitial thickening: comparison of new and established ultrasound and magnetic resonance imaging techniques. Atherosclerosis, 2011, 215 (2), pp.405--410. ⟨hal-02076786⟩
H. Guo, Yvan Wyart, J. Pérot, F. Nauleau, Philippe Moulin. Magnetic nanoparticles for UF membrane integrity: industrial scale. Medical Engineering & Physics, 2011, 2 (1), pp.51-61. ⟨10.12989/mwt.2011.2.1.051⟩. ⟨hal-01026454⟩ Plus de détails...
An alternative ultrafiltration membrane integrity test was already developed in laboratory scale. It is based on the use of magnetic nanoparticles (Fe3O4) and measurement of magnetic susceptibility. The mean size of nanoparticles used is around 35 nm and they show a good disparity between 20 and 100 nm. In this paper, validation of this membrane integrity monitoring method was achieved by industrialscale tests. Two holes with 0.6 mm internal diameter in a module containing 10 000 fibers (35 m2 surface area) was efficiently detected by injecting 750 mL of 1.7 g.L−1 nanoparticle solution during 2s when the test was operated at low TMP (0.096 bar, corresponding to a flux of 2.2 m3.h−1). In addition, it has been demonstrated that within the detectable range, this membrane integrity test with magnetic nanoparticles has a very rapid response time. The response time depends on the permeate flux and the dead-volume of the pilot. This membrane integrity test, with the advantages of on-line operation, high detection sensitivity, detection specificity and very low influence on membrane fouling, seems to be suitable for large scale drinking water plants.
H. Guo, Yvan Wyart, J. Pérot, F. Nauleau, Philippe Moulin. Magnetic nanoparticles for UF membrane integrity: industrial scale. Medical Engineering & Physics, 2011, 2 (1), pp.51-61. ⟨10.12989/mwt.2011.2.1.051⟩. ⟨hal-01026454⟩
Fanny Springer, Emilie Carretier, D. Veyret, D. Dhaler, Philippe Moulin. Numerical and experimental methodology for the development of a new membrane prototype intended to microfiltration bioprocesses. Application to milk filtration. Chemical Engineering and Processing: Process Intensification, 2011, 50 (9), pp.904-915. ⟨10.1016/j.cep.2011.07.009⟩. ⟨hal-01026357⟩ Plus de détails...
In tangential flow filtration, the non-uniform TransMembrane Pressure (TMP) on the membrane length produces a non homogeneous filtration cake, initiates process selectivity changes and modifies the permeate quality. The purpose of this study is to create a tubular ceramic membrane prototype with a more uniform TMP, intended to filtration of fouling fluids. The principle of this membrane structure is to waterproof the external membrane surface to limit flow circulation in the porous support of the membrane. The production was controlled by sizing "permeation vents". This development was achieved using a CFD modelling tool interacting with experiments. A preliminary modelling study was made with water. This work was afterwards applied to the industrial process of casein micelle separation from skim milk. The influence of operating conditions on the membrane hydrodynamics was highlighted. The modelling results were experimentally confirmed, with a discrepancy smaller than 3% and a reproducible water permeability of 2.3 L h−1 bar−1 for 1 mm-wide vent (TMP = 1 bar, T = 20 °C). Then, milk filtration experiments showed a production ratio milk/water equal to 1/2. The permeate quality parameters were studied and the fouling phenomena were taken into account. A parametric study led to the sizing of a final prototype. Its efficiency was experimentally evaluated.
Fanny Springer, Emilie Carretier, D. Veyret, D. Dhaler, Philippe Moulin. Numerical and experimental methodology for the development of a new membrane prototype intended to microfiltration bioprocesses. Application to milk filtration. Chemical Engineering and Processing: Process Intensification, 2011, 50 (9), pp.904-915. ⟨10.1016/j.cep.2011.07.009⟩. ⟨hal-01026357⟩
Journal: Chemical Engineering and Processing: Process Intensification
Fanny Springer, Emilie Carretier, D. Veyret, D. Dhaler, Philippe Moulin. Numerical and experimental methodology for the development of a new membrane prototype intended to microfiltration bioprocesses. Application to milk filtration. Chemical Engineering and Processing: Process Intensification, 2011, 50 (9), pp.904-915. ⟨10.1016/j.cep.2011.07.009⟩. ⟨hal-01026357⟩ Plus de détails...
In tangential flow filtration, the non-uniform TransMembrane Pressure (TMP) on the membrane length produces a non homogeneous filtration cake, initiates process selectivity changes and modifies the permeate quality. The purpose of this study is to create a tubular ceramic membrane prototype with a more uniform TMP, intended to filtration of fouling fluids. The principle of this membrane structure is to waterproof the external membrane surface to limit flow circulation in the porous support of the membrane. The production was controlled by sizing "permeation vents". This development was achieved using a CFD modelling tool interacting with experiments. A preliminary modelling study was made with water. This work was afterwards applied to the industrial process of casein micelle separation from skim milk. The influence of operating conditions on the membrane hydrodynamics was highlighted. The modelling results were experimentally confirmed, with a discrepancy smaller than 3% and a reproducible water permeability of 2.3 L h−1 bar−1 for 1 mm-wide vent (TMP = 1 bar, T = 20 °C). Then, milk filtration experiments showed a production ratio milk/water equal to 1/2. The permeate quality parameters were studied and the fouling phenomena were taken into account. A parametric study led to the sizing of a final prototype. Its efficiency was experimentally evaluated.
Fanny Springer, Emilie Carretier, D. Veyret, D. Dhaler, Philippe Moulin. Numerical and experimental methodology for the development of a new membrane prototype intended to microfiltration bioprocesses. Application to milk filtration. Chemical Engineering and Processing: Process Intensification, 2011, 50 (9), pp.904-915. ⟨10.1016/j.cep.2011.07.009⟩. ⟨hal-01026357⟩
Journal: Chemical Engineering and Processing: Process Intensification
Imen Khouni, Benoît Marrot, Philippe Moulin, Raja Ben Amar. Decolourization of the reconstituted textile effluent by different process treatments: enzymatic catalysis, coagulation/flocculation and nanofiltration processes. Desalination, 2011, 268 (1-3), pp.27-37. ⟨10.1016/j.desal.2010.09.046⟩. ⟨hal-01026445⟩ Plus de détails...
The objective of the present paper is to examine the decolourization efficiency of textile effluent using different processes: coagulation/flocculation, enzymatic catalysis by commercial laccase and nanofiltration. A series of experiments are conducted on laboratory-prepared wastewaters combining chemically two reactive dyes (Blue Bezaktiv S-GLD 150 and Black Novacron R), auxiliaries and chemicals. To optimise coagulation/flocculation and enzymatic treatment, response surface methodology is applied. Coagulation/flocculation leads to a maximum percent of colour removal of about 93% at 593 nm and 94% at 620 nm. Whereas, applied commercial laccase catalysis reduces colour by up to 99%. Nevertheless, these two processes have not the same behaviour on chemical oxygen demand (COD) and salinity removal since the obtained results show that applied coagulation/flocculation permits a partial removal of COD without effect on salinity. However, laccase treatment has no effect on COD and on salinity retention. The application of the nanofiltration shows excellent performances in term of decolourization (superior to 99%). In the same time, a partial retention of COD and salinity respectively of about 56% and 35% is obtained. Thus, nanofiltration seems to be an efficient process in colour removal of textile wastewater. The obtained permeate can be reused in the dyeing process in the textile industry.
Imen Khouni, Benoît Marrot, Philippe Moulin, Raja Ben Amar. Decolourization of the reconstituted textile effluent by different process treatments: enzymatic catalysis, coagulation/flocculation and nanofiltration processes. Desalination, 2011, 268 (1-3), pp.27-37. ⟨10.1016/j.desal.2010.09.046⟩. ⟨hal-01026445⟩
Fabrice Testa, Clémence Coetsier, Emilie Carretier, M. Ennahali, B. Laborie, et al.. Retreatment of silicon slurry by membrane processes. Journal of Hazardous Materials, 2011, 192 (2), pp.440-450. ⟨10.1016/j.jhazmat.2011.05.016⟩. ⟨hal-01026376⟩ Plus de détails...
The purpose of the present study is to develop a process to regenerate the polish liquid used in Chemical and Mechanical Polishing (CMP), called "slurry", and more specifically Silicon CMP slurry. Physico-chemical analyses show a considerable dilution of slurry through washing waters used in polishing. Thus, this effluent has been characterised for a better identification of the deviations from the slurry of reference (Point Of Use). Hence, the principle is to regenerate this effluent by membrane processes. The ultrafiltration results obtained at laboratory scale have led to the development of an industrial prototype. An optimal utilisation of this treatment allows completing a two-step process: the reconcentration by ultrafiltration and a chemical adjustment by addition of concentrated slurry. A stable behaviour of the slurry at the different steps of the process has been observed. Polishing results are similar with retreated and POU slurries. Furthermore, the functioning at industrial scale permits to maintain the performances obtained on the laboratory pilot.
Fabrice Testa, Clémence Coetsier, Emilie Carretier, M. Ennahali, B. Laborie, et al.. Retreatment of silicon slurry by membrane processes. Journal of Hazardous Materials, 2011, 192 (2), pp.440-450. ⟨10.1016/j.jhazmat.2011.05.016⟩. ⟨hal-01026376⟩
Jérémy Gagnaire, X. Y. Wang, L. Chapon, Philippe Moulin, Benoît Marrot. Kinetic study of compost liquor nitrification. Water Science and Technology, 2011, 63 (5), pp.868-876. ⟨10.2166/wst.2011.263⟩. ⟨hal-01026430⟩ Plus de détails...
This study is a first kinetic approach about the compost liquor treatment by activated sludge. This industrial wastewater is highly loaded in organic and nitrogen compounds (COD≈12,000 mg L(-1) and NH(4)(+)-N≈4,000 mg L(-1)). The possibility of its treatment in an urban WWTP is studied measuring ammonia oxidation rate with non-acclimated sludge to the industrial effluent. Compost liquor appears as an inhibitor substrate. The ammonia oxidation rate can be modelled by the Haldane model: U(MAX)=0.180 d(-1), K(S)=12.0 mgN.L(-1) and K(I)=26.0 mgN.L(-1). The ammonia oxidation rate also follows for a synthetic substrate which has the same pollutant load as the real substrate. In this case, the ammonia oxidation rate can be modelled by the Monod model: U(MAX)=0.073 d(-1) and K(S)=4.3 mgN.L(-1). This result confirms that the ammonia oxidising bacteria are inhibited by the real wastewater. The following-up of nitrate production shows also the inhibition of nitrite oxidising bacteria. The compost liquor treatment seems not possible in an urban WWTP (<50,000 p.e.). That's why a specific WWTP is recommended and an acclimation step of activated sludge is essential.
Jérémy Gagnaire, X. Y. Wang, L. Chapon, Philippe Moulin, Benoît Marrot. Kinetic study of compost liquor nitrification. Water Science and Technology, 2011, 63 (5), pp.868-876. ⟨10.2166/wst.2011.263⟩. ⟨hal-01026430⟩
Q. Derekx, Patrice Bacchin, D. Veyret, K. Glucina, Philippe Moulin. Simulation of particle capture in a microfiltration membrane.. Water Science and Technology, 2011, 64 (6), pp.136-1373. ⟨10.2166/wst.2011.349⟩. ⟨hal-01026438⟩ Plus de détails...
The present study takes an interest in the description of the fouling mechanisms by a numerical approach at the microscopic scale. At first, an X-ray tomography has enabled the modelling of the membrane structure for the numerical simulations. Next, for different particle size, a same volume of particles has been sent in the modelled membrane and the final permeability has been computed. Thus, the influence of the particle size on the fouling has been seen. An observation of the particles penetration in the membrane has been realised to detail this influence. The Hermia relations were used in order to determinate the predominant fouling mechanism or the succession of predominant fouling mechanisms. But, without an accurate calculation of the first derivative, it is not possible to define cleanly the predominant fouling mechanism for a low filtered volume. Nevertheless, the perspectives of the local approach with the numerical simulation seem interesting.
Q. Derekx, Patrice Bacchin, D. Veyret, K. Glucina, Philippe Moulin. Simulation of particle capture in a microfiltration membrane.. Water Science and Technology, 2011, 64 (6), pp.136-1373. ⟨10.2166/wst.2011.349⟩. ⟨hal-01026438⟩
L. Clouzot, Nicolas Roche, B. Marrot. Effect of membrane bioreactor configurations on sludge structure and microbial activity. Bioresource Technology, 2011, 102 (2), pp.975-981. ⟨10.1016/j.biortech.2010.09.058⟩. ⟨hal-01292667⟩ Plus de détails...
The aim of this paper was to determine the effect of two different membrane bioreactor (MBR) configurations (external/immersed) on sludge structure and microbial activity. Sludge structure was deduced from rheological measurements. The high shear stress induced by the recirculation pump in the external MBR was shown to result in decreasing viscosity due to activated sludge (AS) deflocculation. Besides, soluble microbial products (SMP) release was higher in the external MBR (5 mgCOD gMLVSS−1) than in the immersed configuration (2 mgCOD gMLVSS−1). Microbial activity was followed from respirometry tests by focusing on the distinction between heterotrophs and autotrophs. An easier autotrophic microbe development was then observed in the immersed MBR compared to the external one. However, the external MBR was shown to allow better heterotrophic microbe development.
L. Clouzot, Nicolas Roche, B. Marrot. Effect of membrane bioreactor configurations on sludge structure and microbial activity. Bioresource Technology, 2011, 102 (2), pp.975-981. ⟨10.1016/j.biortech.2010.09.058⟩. ⟨hal-01292667⟩
Georgette Rebollar-Perez, Emilie Carretier, Nicolas Lesage, Philippe Moulin. Volatile Organic Compound (VOC) removal by vapor permeation at low VOC concentrations: laboratory scale results and modeling for scale up. Membranes, 2011, 1 (1), pp.80-90. ⟨10.3390/membranes1010080⟩. ⟨hal-01026399⟩ Plus de détails...
Petroleum transformation industries have applied membrane processes for solvent and hydrocarbon recovery as an economic alternative to reduce their emissions and reuse evaporated components. Separation of the volatile organic compounds (VOCs) (toluene-propylene-butadiene) from air was performed using a poly dimethyl siloxane (PDMS)/α-alumina membrane. The experimental set-up followed the constant pressure/variable flow set-up and was operated at ~21 °C. The membrane is held in a stainless steel module and has a separation area of 55 × 10−4 m². Feed stream was set to atmospheric pressure and permeate side to vacuum between 3 and 5 mbar. To determine the performance of the module, the removed fraction of VOC was analyzed by Gas Chromatography/Flame Ionization Detector (GC/FID). The separation of the binary, ternary and quaternary hydrocarbon mixtures from air was performed at different flow rates and more especially at low concentrations. The permeate flux, permeance, enrichment factor, separation efficiency and the recovery extent of the membrane were determined as a function of these operating conditions. The permeability coefficients and the permeate flux through the composite PDMS-alumina membrane follow the order given by the Hildebrand parameter: toluene > 1,3-butadiene > propylene. The simulated data for the binary VOC/air mixtures showed fairly good agreement with the experimental results in the case of 1,3-butadiene and propylene. The discrepancies observed for toluene permeation could be minimized by taking into account the effects of the porous support and an influence of the concentration polarization. Finally, the installation of a 0.02 m2 membrane module would reduce 95% of the VOC content introduced at real concentration conditions used in the oil industry.
Georgette Rebollar-Perez, Emilie Carretier, Nicolas Lesage, Philippe Moulin. Volatile Organic Compound (VOC) removal by vapor permeation at low VOC concentrations: laboratory scale results and modeling for scale up. Membranes, 2011, 1 (1), pp.80-90. ⟨10.3390/membranes1010080⟩. ⟨hal-01026399⟩
Georgette Rebollar-Perez, Emilie Carretier, Nicolas Lesage, Philippe Moulin. Volatile Organic Compound (VOC) removal by vapor permeation at low VOC concentrations: laboratory scale results and modeling for scale up. Membranes, 2011, 1 (1), pp.80-90. ⟨10.3390/membranes1010080⟩. ⟨hal-01026399⟩ Plus de détails...
Petroleum transformation industries have applied membrane processes for solvent and hydrocarbon recovery as an economic alternative to reduce their emissions and reuse evaporated components. Separation of the volatile organic compounds (VOCs) (toluene-propylene-butadiene) from air was performed using a poly dimethyl siloxane (PDMS)/α-alumina membrane. The experimental set-up followed the constant pressure/variable flow set-up and was operated at ~21 °C. The membrane is held in a stainless steel module and has a separation area of 55 × 10−4 m². Feed stream was set to atmospheric pressure and permeate side to vacuum between 3 and 5 mbar. To determine the performance of the module, the removed fraction of VOC was analyzed by Gas Chromatography/Flame Ionization Detector (GC/FID). The separation of the binary, ternary and quaternary hydrocarbon mixtures from air was performed at different flow rates and more especially at low concentrations. The permeate flux, permeance, enrichment factor, separation efficiency and the recovery extent of the membrane were determined as a function of these operating conditions. The permeability coefficients and the permeate flux through the composite PDMS-alumina membrane follow the order given by the Hildebrand parameter: toluene > 1,3-butadiene > propylene. The simulated data for the binary VOC/air mixtures showed fairly good agreement with the experimental results in the case of 1,3-butadiene and propylene. The discrepancies observed for toluene permeation could be minimized by taking into account the effects of the porous support and an influence of the concentration polarization. Finally, the installation of a 0.02 m2 membrane module would reduce 95% of the VOC content introduced at real concentration conditions used in the oil industry.
Georgette Rebollar-Perez, Emilie Carretier, Nicolas Lesage, Philippe Moulin. Volatile Organic Compound (VOC) removal by vapor permeation at low VOC concentrations: laboratory scale results and modeling for scale up. Membranes, 2011, 1 (1), pp.80-90. ⟨10.3390/membranes1010080⟩. ⟨hal-01026399⟩
Lauren F. Greenlee, Fabrice Testa, Desmond F. Lawler, Benny D. Freeman, Philippe Moulin. Effect of antiscalant degradation on salt precipitation and solid/liquid separation of RO concentrate. Journal of Membrane Science, 2011, 366 (1-2), pp.48-61. ⟨10.1016/j.memsci.2010.09.040⟩. ⟨hal-01026473⟩ Plus de détails...
The key limitation to the application of reverse osmosis (RO) desalination on inland brackish waters is concentrate disposal. Due to precipitation of sparingly soluble salts (CaCO3, CaSO4, BaSO4, SrSO4), RO membrane recovery cannot be increased further; therefore, other strategies must be investigated. Antiscalants are often added to RO feed water to help prevent precipitation and increase RO recovery, but in concentrate treatment, antiscalants may prevent precipitation of problematic constituents. A three-stage process to treat brackish water RO concentrate was investigated; the stages include oxidation of antiscalants with ozone and hydrogen peroxide, precipitation at elevated pH, and solid/liquid separation. A model water concentrate was used to perform laboratory scale experiments for each treatment stage. Experimental results showed that the advanced oxidation process (AOP) of ozonation and hydrogen peroxide on phosphonate antiscalants allowed increased calcium precipitation as well as loss of the solubilizing effects of antiscalants as compared to precipitation without prior ozonation of the antiscalants. The AOP also removed the effect of antiscalant on precipitate particle size distribution and particle morphology. In some cases, the AOP also improved microfiltration performance for the solid/liquid separation stage. The concentrate treatment could increase overall recovery from 80% to 90% for non-ozonated, antiscalant-dosed concentrate and from 80% to 94% for ozonated, antiscalant-dosed concentrate.
Lauren F. Greenlee, Fabrice Testa, Desmond F. Lawler, Benny D. Freeman, Philippe Moulin. Effect of antiscalant degradation on salt precipitation and solid/liquid separation of RO concentrate. Journal of Membrane Science, 2011, 366 (1-2), pp.48-61. ⟨10.1016/j.memsci.2010.09.040⟩. ⟨hal-01026473⟩
E. Barbot, I. Seyssiecq, Nicolas Roche, B. Marrot. Inhibition of activated sludge respiration by sodium azide addition: Effect on rheology and oxygen transfer. Journal Chemical Engineering, 2010, 163 (3), pp.230-235. ⟨10.1016/j.cej.2010.07.050⟩. ⟨hal-01297615⟩ Plus de détails...
Although microorganism respiration inhibition by sodium azide (NaN3) is used in some studies to identify activated sludge adsorption capacity, little is known about the effect of this compound on the suspension properties. In this study we have investigated the effect of NaN3 addition on both volumetric oxygen mass transfer coefficient and rheology of activated sludge (AS) suspensions in a 1.9 L bioreactor. The rheological properties (shear thinning one) of AS suspensions with and without NaN3 addition are measured in situ (triphasic conditions). It appears that NaN3 addition leads to a deflocculation of AS suspensions and thus a decrease in apparent viscosity. A small amount of suspended solids was added in order to obtain identical apparent viscosities (under 1.2 or 46.3 s−1) for AS suspensions with and without NaN3 addition. KLa values were then measured in both respiring and non-respiring suspensions for different air flow rates (2, 3 or 4 L/min) and under low or high mechanical shear rate (1.2 or 46.3 s−1). Results show that under high mechanical shear rate, the respiration state for a given air flow rate does not impact the KLa values. On the contrary, under low mechanical shear rate, NaN3 addition induces an increase of KLa values in comparison with those obtained with the respiring biomass. This effect, for a same apparent viscosity, is attributed to the deflocculation observed in the presence of NaN3. Indeed, AS with and without NaN3 addition used for the KLa measurements induce a modification of the floc internal structure, corresponding to smaller floc size in the case of NaN3 addition.
E. Barbot, I. Seyssiecq, Nicolas Roche, B. Marrot. Inhibition of activated sludge respiration by sodium azide addition: Effect on rheology and oxygen transfer. Journal Chemical Engineering, 2010, 163 (3), pp.230-235. ⟨10.1016/j.cej.2010.07.050⟩. ⟨hal-01297615⟩
F. Springer, R. Ghidossi, E. Carretier, D. Veyret, D. Dhaler, et al.. Study of the Effect of Geometry on Wall Shear Stress and Permeate Flux for Ceramic Membranes: CFD and Experimental Approaches. Engineering Applications of Computational Fluid Mechanics, 2010, 4 (1), pp.17-28. ⟨10.1080/19942060.2010.11015296⟩. ⟨hal-01295364⟩ Plus de détails...
Knowing how wall shear stress develops at the membrane surface is extremely useful when trying to reduce concentration polarization and fouling. Newly developed as well as manufactured ceramic membranes exhibit various channel geometries (cylindrical, square, triangular, etc). Mass transport characteristics depend on the geometry that conditions hydrodynamic conditions. The goal of this work is to study the influence of the channel geometry on the wall shear stress for various operating parameters (tangential velocity, transmembrane pressure…). Numerical simulations are performed for various inlet velocities for different channel geometries. The wall shear stress along the channel perimeter as a function of the shape and the cross section of the channel are studied. The influence of the geometry on the membrane performances is also studied. The simulated shear stress is employed to correlate experimental results. The results of this comparison show that mass transfer resistance depends on the wall shear stress alone, regardless of the flow rate, the shape or section of the channels.
F. Springer, R. Ghidossi, E. Carretier, D. Veyret, D. Dhaler, et al.. Study of the Effect of Geometry on Wall Shear Stress and Permeate Flux for Ceramic Membranes: CFD and Experimental Approaches. Engineering Applications of Computational Fluid Mechanics, 2010, 4 (1), pp.17-28. ⟨10.1080/19942060.2010.11015296⟩. ⟨hal-01295364⟩
Journal: Engineering Applications of Computational Fluid Mechanics
Jean-Philippe Bonnet, Frédéric Topin, Jérôme Vicente, Lounes Tadrist. Cocurrent gas-liquid flow in metal foam: an experimental investigation of pressure gradient. Journal of Porous Media, 2010, 13 (6), pp.497-510. ⟨10.1615/JPorMedia.v13.i6.10⟩. ⟨hal-01024714⟩ Plus de détails...
Metal foams have a relatively large "fluid/solid" contact area (m2 m−3) as well as small pressure drops due to their open structure. They may be used for many applications, such as in chemical reactors for the deposition of a catalyst. Gas and liquid cocurrent flows through this solid foam packing are investigated. Sample pore sizes are in the range of 400−2500 μm. The influence of pore size and gas and liquid mass flow rate density on the pressure gradient is experimentally investigated, and flow regimes are observed (bubbly, pulsating, and trickle flow). The reduced pressure gradient, defined as the two-phase multiplier by Lockhart and Martinelli formalism, allows the gathering and comparing of results obtained for all samples. Although the pore size range is very wide, the two-phase multiplier does not reveal any significant discrepancy between all the tested samples. Moreover, a correlation with glass-packed beds may reasonably be used to predict the pressure drop in metal foam (±25%).
Jean-Philippe Bonnet, Frédéric Topin, Jérôme Vicente, Lounes Tadrist. Cocurrent gas-liquid flow in metal foam: an experimental investigation of pressure gradient. Journal of Porous Media, 2010, 13 (6), pp.497-510. ⟨10.1615/JPorMedia.v13.i6.10⟩. ⟨hal-01024714⟩
R. Ghidossi, Emilie Carretier, D. Veyret, D. Dhaler, Philippe Moulin. Optimizing the compacity of ceramic membranes. Journal of Membrane Science, 2010, 360 (1-2), pp.483-492. ⟨10.1016/j.memsci.2010.05.050⟩. ⟨hal-01024773⟩ Plus de détails...
The aim of this study is to increase exchange area or specific area of the membrane unit containing the ceramic membranes in order to achieve a compacity of over 330 m2/m3. Several configurations were studied by varying parameters like the diameter, membrane geometry, and the form of channels (cylindrical, square-section, triangular, hexagonal, etc.). Taking manufacturing constraints into account, several optimized geometries were described, thus allowing the optimization of the filtration area for each module. In this way, membrane compacity was significantly improved. Therefore a substantial increase in the permeate flux was expected and it was important to verify the capacity of the porous media to evacuate such permeate flux. Computational fluid dynamics analysis was used to simulate permeate evacuation as well as the flow-rate of each individual channel in the monolith. The optimal geometries could then be determined as a function of this permeate flow-rate and/or cut-off threshold. The experimental results obtained with water were in good agreement with those obtained by numerical simulation.
R. Ghidossi, Emilie Carretier, D. Veyret, D. Dhaler, Philippe Moulin. Optimizing the compacity of ceramic membranes. Journal of Membrane Science, 2010, 360 (1-2), pp.483-492. ⟨10.1016/j.memsci.2010.05.050⟩. ⟨hal-01024773⟩
Hassen Dhaouadi, Benoît Marrot. Olive mill wastewater treatment in a membrane bioreactor: process stability and fouling aspects. Environmental Technology, 2010, 31 (7), pp.761-770. ⟨10.1080/09593331003636621⟩. ⟨hal-01024735⟩ Plus de détails...
An external ceramic membrane bioreactor was used to carry out an experimental study of process stability and fouling aspects for olive mill wastewater (OMW) treatment. Three diluted OMW solutions were used to continuously feed the reactor. An acclimated biomass was employed and the process stability was followed on the basis of the permeate quality and some operating parameters (pressure, temperature, mass flow and dissolved oxygen). Several backpulse combinations were tested to determine the best filtration and backwash time. It appeared that a short backpulse duration was sufficient and that the behaviour, in terms of the permeate flux versus time, stabilized. In terms of increased permeate flux, the effect of the backpulsing depended on the nature of the solution. This improvement was limited, but, in the long-term, backpulsing makes it possible to maintain a constant permeate flux over a period of several days.
Hassen Dhaouadi, Benoît Marrot. Olive mill wastewater treatment in a membrane bioreactor: process stability and fouling aspects. Environmental Technology, 2010, 31 (7), pp.761-770. ⟨10.1080/09593331003636621⟩. ⟨hal-01024735⟩
F. Springer, Remy Ghidossi, Emilie Carretier, Damien Veyret, D. Dhaler, et al.. Study of the effect of geometry on wall shear stress and permeate flux for ceramic membranes: CFD and experimental approaches. Engineering Applications of Computational Fluid Mechanics, 2010, 4 (1), pp.17-29. ⟨hal-01025200⟩ Plus de détails...
F. Springer, Remy Ghidossi, Emilie Carretier, Damien Veyret, D. Dhaler, et al.. Study of the effect of geometry on wall shear stress and permeate flux for ceramic membranes: CFD and experimental approaches. Engineering Applications of Computational Fluid Mechanics, 2010, 4 (1), pp.17-29. ⟨hal-01025200⟩
Journal: Engineering Applications of Computational Fluid Mechanics
H. Guo, Yvan Wyart, J. Perot, F. Nauleau, Philippe Moulin. Application of magnetic nanoparticles for UF membrane integrity monitoring at low-pressure operation. Journal of Membrane Science, 2010, 350 (1-2), pp.172-179. ⟨10.1016/j.memsci.2009.12.025⟩. ⟨hal-01025137⟩ Plus de détails...
An alternative ultrafiltration membrane integrity test is presented and evaluated, based on the use of magnetic nanoparticles (Fe3O4) and measurement of magnetic susceptibility. The mean size of nanoparticles used is around 35 nm and they show a good disparity between 20 and 100 nm. A series of integrity tests were carried out on a Norit membrane module containing 100 fibers under a low transmembrane pressure of 0.25 bar. The results showed that no magnetic susceptibility was detected in permeate when the tests were performed on the intact module in both cross-flow and dead-end filtration, indicating the complete nanoparticle retention by the intact module. However, when even one fiber was broken in the module (1% breakage rate), magnetic susceptibility of permeate could be detected instantaneously even at feed concentrations as low as 1.2 ppm with Bartington magnetic susceptibility meter. This detection is valid during all the filtration process. The results also showed that the membrane permeability could be completely recovered after a backwash. This membrane integrity test, with the advantages of simplicity, on-line operation, high detection specificity and sensitivity, quick detection and very low influence on membrane fouling, seems to be suitable for large-scale drinking water plants.
H. Guo, Yvan Wyart, J. Perot, F. Nauleau, Philippe Moulin. Application of magnetic nanoparticles for UF membrane integrity monitoring at low-pressure operation. Journal of Membrane Science, 2010, 350 (1-2), pp.172-179. ⟨10.1016/j.memsci.2009.12.025⟩. ⟨hal-01025137⟩
Georgette Rebollar-Perez, Emilie Carretier, Philippe Moulin. Aplicaciones de la permeación de vapor: el tratamiento de compuestos orgánicos volátiles de origen antropogénico. Revista mexicana de ingeniería química, 2010, 9 (1), pp.67-77. ⟨hal-01044472⟩ Plus de détails...
Vapour permeation is a membrane separating process that has been used since several decades for gas separation and it has been recently and successfully applied in treatment of volatile organic compounds (VOC) charged gaseous effluents. It presents several advantages compared to conventional processes for gas effluent treatment (e.g. adsorption, incineration and oxidation): it is energetically less demanding, it is easy to operate and it is economically feasible. This article presents a review of the VOC emissions in some principal industrialised countries and the positioning of vapour permeation between the processes for gaseous effluent treatment. It also presents some generalities about the operational principles of vapour permeation, as well as the main characteristics of the commonly used membrane modules and the current materials used for membrane manufacturing. Finally, an overview of the industrial application opportunities of vapour permeation is given.
Georgette Rebollar-Perez, Emilie Carretier, Philippe Moulin. Aplicaciones de la permeación de vapor: el tratamiento de compuestos orgánicos volátiles de origen antropogénico. Revista mexicana de ingeniería química, 2010, 9 (1), pp.67-77. ⟨hal-01044472⟩
Lauren F. Greenlee, Fabrice Testa, Desmond F. Lawler, Benny D. Freeman, Philippe Moulin. The effect of antiscalant addition on calcium carbonate precipitation for a simplified synthetic brackish water reverse osmosis concentrate. Water Research, 2010, 44 (9), pp.2957-2969. ⟨10.1016/j.watres.2010.02.024⟩. ⟨hal-01024800⟩ Plus de détails...
The primary limitations to inland brackish water reverse osmosis (RO) desalination are the cost and technical feasibility of concentrate disposal. To decrease concentrate volume, a side-stream process can be used to precipitate problematic scaling salts and remove the precipitate with a solid/liquid separation step. The treated concentrate can then be purified through a secondary reverse osmosis stage to increase overall recovery and decrease the volume of waste requiring disposal. Antiscalants are used in an RO system to prevent salt precipitation but might affect side-stream concentrate treatment. Precipitation experiments were performed on a synthetic RO concentrate with and without antiscalant; of particular interest was the precipitation of calcium carbonate. Particle size distributions, calcium precipitation, microfiltration flux, and scanning electron microscopy were used to evaluate the effects of antiscalant type, antiscalant concentration, and precipitation pH on calcium carbonate precipitation and filtration. Results show that antiscalants can decrease precipitate particle size and change the shape of the particles; smaller particles can cause an increase in microfiltration flux decline during the solid/liquid separation step. The presence of antiscalant during precipitation can also decrease the mass of precipitated calcium carbonate.
Lauren F. Greenlee, Fabrice Testa, Desmond F. Lawler, Benny D. Freeman, Philippe Moulin. The effect of antiscalant addition on calcium carbonate precipitation for a simplified synthetic brackish water reverse osmosis concentrate. Water Research, 2010, 44 (9), pp.2957-2969. ⟨10.1016/j.watres.2010.02.024⟩. ⟨hal-01024800⟩
Ludiwine Clouzot, Pierre Doumenq, Nicolas Roche, Benoît Marrot. Kinetic parameters for 17α-ethinylestradiol removal by nitrifying activated sludge developed in a membrane bioreactor. Bioresource Technology, 2010, 101 (16), pp.6425-6431. ⟨10.1016/j.biortech.2010.03.039⟩. ⟨hal-01024728⟩ Plus de détails...
The synthetic hormone 17α-ethinylestradiol (EE2) is primarily removed in wastewater treatment plants (WWTPs) by sorption, and nitrifying biomass has been shown to be responsible for EE2 biodegradation. Membrane bioreactor (MBR) technology was chosen to develop a community of autotrophic, nitrifying micro-organisms and determine kinetic parameters for EE2 biodegradation. Biological inhibition by azide was applied to differentiate sorption from biodegradation. Activated sludge (AS) was acclimated in the MBR to a substrate specific to autotrophic biomass and resulted in an increase in nitrifying activity. Acclimated AS was used to successfully biodegrade EE2 (11% increase in EE2 removal), and the overall removal of EE2 was determined to be 99% (sorption + biodegradation). AS used directly from a WWTP without acclimation removed EE2 only through sorption (88% removal of EE2). Therefore, higher nitrifying activity developed by acclimating AS allowed almost complete removal of EE2.
Ludiwine Clouzot, Pierre Doumenq, Nicolas Roche, Benoît Marrot. Kinetic parameters for 17α-ethinylestradiol removal by nitrifying activated sludge developed in a membrane bioreactor. Bioresource Technology, 2010, 101 (16), pp.6425-6431. ⟨10.1016/j.biortech.2010.03.039⟩. ⟨hal-01024728⟩
Elise Barbot, Philippe Dussouillez, J.Y. Bottero, Philippe Moulin. Coagulation of bentonite suspension by polyelectrolytes or ferric chloride: floc breakage and reformation. Chemical Engineering Journal, 2010, 156 (1), pp.83-91. ⟨10.1016/j.cej.2009.10.001⟩. ⟨hal-01024705⟩ Plus de détails...
Coagulation process usually involves different hydrodynamic conditions, in particular when it is followed by a filtration step. In this study, coagulation performance was investigated under a wide range of shear stress. Floc behaviour was followed in-line by laser granulometry to determine size distribution and structure. Synthetic suspension of bentonite in tap water was used as a reference for mineral solids in surface water. Three cationic polymers (polyamine based and polyDADMAC) and ferric chloride were tested using different coagulation reactor geometries. Jar-test indicated coagulation performance under mild hydrodynamic conditions and Taylor-Couette reactors were used to create shear stresses up to 8 Pa. Flocs formed with ferric chloride are not able to grow under middle shear stress like 1.5 Pa. On the contrary, polyelectrolytes lead to large flocs, dense (Df = 2.6) and resistant to shear stress. A qualitative comparison of floc resistance to shear depending on hydrodynamic conditions and coagulant type is given through the calculation of the strength factor. Fractal dimension measurements indicate a mechanism of particle erosion when flocs are subjected to a higher shear stress in Taylor-Couette reactor. Floc re-growth is also investigated, and breakage appears to be non-reversible regardless of coagulant and conditions experimented.
Elise Barbot, Philippe Dussouillez, J.Y. Bottero, Philippe Moulin. Coagulation of bentonite suspension by polyelectrolytes or ferric chloride: floc breakage and reformation. Chemical Engineering Journal, 2010, 156 (1), pp.83-91. ⟨10.1016/j.cej.2009.10.001⟩. ⟨hal-01024705⟩
Elise Barbot, Philippe Dussouillez, J.Y. Bottero, Philippe Moulin. Coagulation of bentonite suspension by polyelectrolytes or ferric chloride: floc breakage and reformation. Chemical Engineering Journal, 2010, 156 (1), pp.83-91. ⟨10.1016/j.cej.2009.10.001⟩. ⟨hal-01024705⟩ Plus de détails...
Coagulation process usually involves different hydrodynamic conditions, in particular when it is followed by a filtration step. In this study, coagulation performance was investigated under a wide range of shear stress. Floc behaviour was followed in-line by laser granulometry to determine size distribution and structure. Synthetic suspension of bentonite in tap water was used as a reference for mineral solids in surface water. Three cationic polymers (polyamine based and polyDADMAC) and ferric chloride were tested using different coagulation reactor geometries. Jar-test indicated coagulation performance under mild hydrodynamic conditions and Taylor-Couette reactors were used to create shear stresses up to 8 Pa. Flocs formed with ferric chloride are not able to grow under middle shear stress like 1.5 Pa. On the contrary, polyelectrolytes lead to large flocs, dense (Df = 2.6) and resistant to shear stress. A qualitative comparison of floc resistance to shear depending on hydrodynamic conditions and coagulant type is given through the calculation of the strength factor. Fractal dimension measurements indicate a mechanism of particle erosion when flocs are subjected to a higher shear stress in Taylor-Couette reactor. Floc re-growth is also investigated, and breakage appears to be non-reversible regardless of coagulant and conditions experimented.
Elise Barbot, Philippe Dussouillez, J.Y. Bottero, Philippe Moulin. Coagulation of bentonite suspension by polyelectrolytes or ferric chloride: floc breakage and reformation. Chemical Engineering Journal, 2010, 156 (1), pp.83-91. ⟨10.1016/j.cej.2009.10.001⟩. ⟨hal-01024705⟩
H. Guo, Yvan Wyart, J. Perot, F. Nauleau, Philippe Moulin. Low-pressure membrane integrity tests for drinking water treatment: a review. Water Research, 2010, 44 (1), pp.41-57. ⟨10.1016/j.watres.2009.09.032⟩. ⟨hal-01025143⟩ Plus de détails...
Low-pressure membrane systems, including microfiltration (MF) and ultrafiltration (UF) membranes, are being increasingly used in drinking water treatments due to their high level of pathogen removal. However, the pathogen will pass through the membrane and contaminate the product if the membrane integrity is compromised. Therefore, an effective on-line integrity monitoring method for MF and UF membrane systems is essential to guarantee the regulatory requirements for pathogen removal. A lot of works on low-pressure membrane integrity tests have been conducted by many researchers. This paper provides a literature review about different low-pressure membrane integrity monitoring methods for the drinking water treatment, including direct methods (pressure-based tests, acoustic sensor test, liquid porosimetry, etc.) and indirect methods (particle counting, particle monitoring, turbidity monitoring, surrogate challenge tests). Additionally, some information about the operation of membrane integrity tests is presented here. It can be realized from this review that it remains urgent to develop an alternative on-line detection technique for a quick, accurate, simple, continuous and relatively inexpensive evaluation of low-pressure membrane integrity. To better satisfy regulatory requirements for drinking water treatments, the characteristic of this ideal membrane integrity test is proposed at the end of this paper.
H. Guo, Yvan Wyart, J. Perot, F. Nauleau, Philippe Moulin. Low-pressure membrane integrity tests for drinking water treatment: a review. Water Research, 2010, 44 (1), pp.41-57. ⟨10.1016/j.watres.2009.09.032⟩. ⟨hal-01025143⟩
Imen Khouni, Benoît Marrot, Raja Ben Amar. Decolourization of the reconstituted dye bath effluent by commercial laccase treatment: optimization through response surface methodology. Chemical Engineering Journal, 2010, 156 (1), pp.121-133. ⟨10.1016/j.cej.2009.10.007⟩. ⟨hal-01025206⟩ Plus de détails...
This paper aims to study the effect of temperature, pH and enzyme concentration on decolourization of separately two reactive textile dyes (Black Novacron R and Blue Bezaktiv S-GLD 150) used in reconstituted dye bath effluent (textile dye and auxiliary components) and in aqueous dye solutions (dye dissolved in deionised water) by a commercial laccase formulation (DeniLite® IIS). The central composite design (CCD) matrix and response surface methodology (RSM) have been applied to design experiments for the evaluation of the interactive effects of the three most important operating variables: temperature 'T' (25-45 °C), pH (3.0-7.0), and enzyme concentration 'EC' (80-240 U/L) on the enzymatic decolourization of the different synthetic dyes solutions at initial dye concentration of 40 mg/L. The RSM indicated that the optimum parameter values were respectively for the reconstituted Black Novacron R and the Blue Bezaktiv S-GLD 150 effluents: T = 43 °C and 41.44 °C, pH 6 and 6.29, EC = 222 and 226.43 U/L. The maximum colour removal was about 98.9% at 593 nm and 79.9% at 400 nm for reconstituted Black Novacron R effluent and about 98.9% at 620 nm for reconstituted Blue Bezaktiv S-GLD 150 effluent. For aqueous dye solutions, RSM has shown that colour removal obtained were quite similar. However, the optimum parameters were different. Hence, enzyme concentration depends on the effluent component.
Imen Khouni, Benoît Marrot, Raja Ben Amar. Decolourization of the reconstituted dye bath effluent by commercial laccase treatment: optimization through response surface methodology. Chemical Engineering Journal, 2010, 156 (1), pp.121-133. ⟨10.1016/j.cej.2009.10.007⟩. ⟨hal-01025206⟩
Imen Khouni, Benoît Marrot, Raja Ben Amar. Decolourization of the reconstituted dye bath effluent by commercial laccase treatment: optimization through response surface methodology. Chemical Engineering Journal, 2010, 156 (1), pp.121-133. ⟨10.1016/j.cej.2009.10.007⟩. ⟨hal-01025206⟩ Plus de détails...
This paper aims to study the effect of temperature, pH and enzyme concentration on decolourization of separately two reactive textile dyes (Black Novacron R and Blue Bezaktiv S-GLD 150) used in reconstituted dye bath effluent (textile dye and auxiliary components) and in aqueous dye solutions (dye dissolved in deionised water) by a commercial laccase formulation (DeniLite® IIS). The central composite design (CCD) matrix and response surface methodology (RSM) have been applied to design experiments for the evaluation of the interactive effects of the three most important operating variables: temperature 'T' (25-45 °C), pH (3.0-7.0), and enzyme concentration 'EC' (80-240 U/L) on the enzymatic decolourization of the different synthetic dyes solutions at initial dye concentration of 40 mg/L. The RSM indicated that the optimum parameter values were respectively for the reconstituted Black Novacron R and the Blue Bezaktiv S-GLD 150 effluents: T = 43 °C and 41.44 °C, pH 6 and 6.29, EC = 222 and 226.43 U/L. The maximum colour removal was about 98.9% at 593 nm and 79.9% at 400 nm for reconstituted Black Novacron R effluent and about 98.9% at 620 nm for reconstituted Blue Bezaktiv S-GLD 150 effluent. For aqueous dye solutions, RSM has shown that colour removal obtained were quite similar. However, the optimum parameters were different. Hence, enzyme concentration depends on the effluent component.
Imen Khouni, Benoît Marrot, Raja Ben Amar. Decolourization of the reconstituted dye bath effluent by commercial laccase treatment: optimization through response surface methodology. Chemical Engineering Journal, 2010, 156 (1), pp.121-133. ⟨10.1016/j.cej.2009.10.007⟩. ⟨hal-01025206⟩
Lauren F. Greenlee, Fabrice Testa, Desmond F. Lawler, Benny D. Freeman, Philippe Moulin. Effect of antiscalants on precipitation of an RO concentrate: metals precipitated and particle characteristics for several water compositions. Water Research, 2010, 44 (8), pp.2672-2684. ⟨10.1016/j.watres.2010.01.034⟩. ⟨hal-01024814⟩ Plus de détails...
Inland brackish water reverse osmosis (RO) is economically and technically limited by the large volume of salty waste (concentrate) produced. The use of a controlled precipitation step, followed by solid/liquid separation (filtration), has emerged as a promising side-stream treatment process to treat reverse osmosis concentrate and increase overall system recovery. The addition of antiscalants to the RO feed prevents precipitation within the membrane system but might have a deleterious effect on a concentrate treatment process that uses precipitation to remove problematic precipitates. The effects of antiscalant type and concentration on salt precipitation and precipitate particle morphology were evaluated for several water compositions. The primary precipitate for the synthetic brackish waters tested was calcium carbonate; the presence of magnesium, sulfate, minor ions, and antiscalant compounds affected the amount of calcium precipitated, as well as the phases of calcium carbonate formed during precipitation. Addition of antiscalant decreased calcium precipitation but increased incorporation of magnesium and sulfate into precipitating calcium carbonate. Antiscalants prevented the growth of nucleated precipitates, resulting in the formation of small (100-200 nm diameter) particles, as well as larger (6-10 μm) particles. Elemental analysis revealed changes in composition and calcium carbonate polymorph with antiscalant addition and antiscalant type. Results indicate that the presence of antiscalants does reduce the extent of calcium precipitation and can worsen subsequent filtration performance.
Lauren F. Greenlee, Fabrice Testa, Desmond F. Lawler, Benny D. Freeman, Philippe Moulin. Effect of antiscalants on precipitation of an RO concentrate: metals precipitated and particle characteristics for several water compositions. Water Research, 2010, 44 (8), pp.2672-2684. ⟨10.1016/j.watres.2010.01.034⟩. ⟨hal-01024814⟩
S. Renou, S. Poulain, J.G. Givaudan, Philippe Moulin. Amelioration of ultrafiltration process by lime treatment: Case of landfill leachate. Desalination, 2009, 249 (1), pp.72 - 82. ⟨10.1016/j.desal.2008.09.007⟩. ⟨hal-01916692⟩ Plus de détails...
S. Renou, S. Poulain, J.G. Givaudan, Philippe Moulin. Amelioration of ultrafiltration process by lime treatment: Case of landfill leachate. Desalination, 2009, 249 (1), pp.72 - 82. ⟨10.1016/j.desal.2008.09.007⟩. ⟨hal-01916692⟩
E. Barbot, E. Carretier, Y. Wyart, B. Marrot, Philippe Moulin. Transportable membrane process to produce drinking water. Desalination, 2009, 248 (1-3), pp.58 - 63. ⟨10.1016/j.desal.2008.05.038⟩. ⟨hal-01916716⟩ Plus de détails...
E. Barbot, E. Carretier, Y. Wyart, B. Marrot, Philippe Moulin. Transportable membrane process to produce drinking water. Desalination, 2009, 248 (1-3), pp.58 - 63. ⟨10.1016/j.desal.2008.05.038⟩. ⟨hal-01916716⟩
Fanny Springer, Remy Ghidossi, Emilie Carretier, Damien Veyret, Didier Dhaler, et al.. Determination of the Wall Shear Stress by Numerical Simulation: Membrane Process Applications. Chemical Product and Process Modeling, 2009, 4 (4), 10 p. ⟨10.2202/1934-2659.1328⟩. ⟨hal-01916729⟩ Plus de détails...
Membrane processes have been intensely developing during the last decades, and mainly in dairy industry. Considering the feed effluent complexity, concentration polarization phenomenon and fouling are accentuated limitations for the development of membrane dairy filtration processes. Knowledge of the wall shear stress developed at the membrane surface is fundamental to reduce those phenomena. In this work, the variation of the wall shear stress on cylindrical, square, triangular and hybrid channels by numerical simulation for various operating parameters was studied. Predictions were established for different commercial ceramic membranes and predict the geometry that tends to better mass transport efficiency by enhancing hydrodynamics conditions. Numerical simulations are performed over a typical range of Reynolds numbers inside different channel geometries under laminar and turbulent conditions. Consequently, this paper intended to enhance the performances of these processes by maximizing the average wall shear stress on the membrane surface by numerical simulation. A comparison with experimental results was realized and a good agreement was obtained. Given those conclusions, a new membrane according to the whole CFD results consistent with experimental results was designed.
Fanny Springer, Remy Ghidossi, Emilie Carretier, Damien Veyret, Didier Dhaler, et al.. Determination of the Wall Shear Stress by Numerical Simulation: Membrane Process Applications. Chemical Product and Process Modeling, 2009, 4 (4), 10 p. ⟨10.2202/1934-2659.1328⟩. ⟨hal-01916729⟩
Fanny Springer, Remy Ghidossi, Emilie Carretier, Damien Veyret, Didier Dhaler, et al.. Determination of the Wall Shear Stress by Numerical Simulation: Membrane Process Applications. Chemical Product and Process Modeling, 2009, 4 (4), 10 p. ⟨10.2202/1934-2659.1328⟩. ⟨hal-01916729⟩ Plus de détails...
Membrane processes have been intensely developing during the last decades, and mainly in dairy industry. Considering the feed effluent complexity, concentration polarization phenomenon and fouling are accentuated limitations for the development of membrane dairy filtration processes. Knowledge of the wall shear stress developed at the membrane surface is fundamental to reduce those phenomena. In this work, the variation of the wall shear stress on cylindrical, square, triangular and hybrid channels by numerical simulation for various operating parameters was studied. Predictions were established for different commercial ceramic membranes and predict the geometry that tends to better mass transport efficiency by enhancing hydrodynamics conditions. Numerical simulations are performed over a typical range of Reynolds numbers inside different channel geometries under laminar and turbulent conditions. Consequently, this paper intended to enhance the performances of these processes by maximizing the average wall shear stress on the membrane surface by numerical simulation. A comparison with experimental results was realized and a good agreement was obtained. Given those conclusions, a new membrane according to the whole CFD results consistent with experimental results was designed.
Fanny Springer, Remy Ghidossi, Emilie Carretier, Damien Veyret, Didier Dhaler, et al.. Determination of the Wall Shear Stress by Numerical Simulation: Membrane Process Applications. Chemical Product and Process Modeling, 2009, 4 (4), 10 p. ⟨10.2202/1934-2659.1328⟩. ⟨hal-01916729⟩
R. Ghidossi, D. Veyret, J.L. Scotto, T. Jalabert, Philippe Moulin. Ferry oily wastewater treatment. Separation and Purification Technology, 2009, 64 (3), pp.296 - 303. ⟨10.1016/j.seppur.2008.10.013⟩. ⟨hal-01916601⟩ Plus de détails...
Over the last decade, membrane filtration has appeared as a rentable and a powerful process for purifying large volumes of wastewater (mostly in the form of bilge water and ballast water) generated by naval and commercial vessels. Ceramic membranes with high resistance to extreme conditions can treat more and more effluents. The aim of this paper is to develop an industrial process that can separate hydrocarbon (HC) from oily wastewater using a membrane process. The purpose is to produce a treated water stream suitable to be discharged in the sea and to reduce the volume of waste stream which must be subsequently treated either onboard or onshore. The separation is accomplished by the combination of a decantation–flotation step and an ultrafiltration step. We have studied the effect of pre-treatment and operating conditions (transmembrane pressure, temperature, oily wastewater concentration, etc.). Having tested several ceramic membranes from the laboratory scale, the process was scaled up and ran in two ferries, with a 300-kDa membrane composed of 19 channels. The process is economically and environmentally attractive: (i) it reduces by a factor of 6 the volume of effluents to be treated onshore, (ii) it rejects a very low HC concentrated (less than 1 ppm) effluent that respects nowdays and future environmental standards, (iii) the regeneration of the membrane is effective after each treatment, (iv) the permeate flux can reach 100 L h−1 m−2 bar−1 and it is possible to produce more than 1500 L h−1 of purified water, (v) it is possible to treat in continuous. This process “Klearsep” has obtained the United States Coast Guard (162050/9051/0), the International Maritime Organisation (IMO MEPC 107 49) and the European (19353/AO EC) accreditations. 7 ferries are equipped with this new process.
R. Ghidossi, D. Veyret, J.L. Scotto, T. Jalabert, Philippe Moulin. Ferry oily wastewater treatment. Separation and Purification Technology, 2009, 64 (3), pp.296 - 303. ⟨10.1016/j.seppur.2008.10.013⟩. ⟨hal-01916601⟩
Philippe Moulin, Fanny Springer, Emilie Carretier, Damien Veyret. DEVELOPING LENGTHS IN WOVEN AND HELICAL HOLLOW TUBES FOR DEAN VORTICES FLOWS. Engineering Applications of Computational Fluid Mechanics, 2009. ⟨hal-01916728⟩ Plus de détails...
Philippe Moulin, Fanny Springer, Emilie Carretier, Damien Veyret. DEVELOPING LENGTHS IN WOVEN AND HELICAL HOLLOW TUBES FOR DEAN VORTICES FLOWS. Engineering Applications of Computational Fluid Mechanics, 2009. ⟨hal-01916728⟩
Journal: Engineering Applications of Computational Fluid Mechanics
Philippe Moulin, Fanny Springer, Emilie Carretier, Damien Veyret. DEVELOPING LENGTHS IN WOVEN AND HELICAL HOLLOW TUBES FOR DEAN VORTICES FLOWS. Engineering Applications of Computational Fluid Mechanics, 2009. ⟨hal-01916728⟩ Plus de détails...
Philippe Moulin, Fanny Springer, Emilie Carretier, Damien Veyret. DEVELOPING LENGTHS IN WOVEN AND HELICAL HOLLOW TUBES FOR DEAN VORTICES FLOWS. Engineering Applications of Computational Fluid Mechanics, 2009. ⟨hal-01916728⟩
Journal: Engineering Applications of Computational Fluid Mechanics
E. Barbot, S Moustier, J. Bottero, Philippe Moulin. Coagulation and ultrafiltration: Understanding of the key parameters of the hybrid process. Journal of Membrane Science, 2008, 325 (2), pp.520 - 527. ⟨10.1016/j.memsci.2008.07.054⟩. ⟨hal-01916700⟩ Plus de détails...
E. Barbot, S Moustier, J. Bottero, Philippe Moulin. Coagulation and ultrafiltration: Understanding of the key parameters of the hybrid process. Journal of Membrane Science, 2008, 325 (2), pp.520 - 527. ⟨10.1016/j.memsci.2008.07.054⟩. ⟨hal-01916700⟩
Y. Wyart, G. Georges, C. Deumié, C. Amra, Philippe Moulin. Membrane characterization by optical methods: Ellipsometry of the scattered field. Journal of Membrane Science, 2008, 318 (1-2), pp.145 - 153. ⟨10.1016/j.memsci.2008.02.039⟩. ⟨hal-01916694⟩ Plus de détails...
Y. Wyart, G. Georges, C. Deumié, C. Amra, Philippe Moulin. Membrane characterization by optical methods: Ellipsometry of the scattered field. Journal of Membrane Science, 2008, 318 (1-2), pp.145 - 153. ⟨10.1016/j.memsci.2008.02.039⟩. ⟨hal-01916694⟩
Y. Wyart, G. Georges, C. Deumié, C. Amra, Philippe Moulin. Membrane characterization by microscopic methods: Multiscale structure. Journal of Membrane Science, 2008, 315 (1-2), pp.82 - 92. ⟨10.1016/j.memsci.2008.02.010⟩. ⟨hal-01916696⟩ Plus de détails...
Y. Wyart, G. Georges, C. Deumié, C. Amra, Philippe Moulin. Membrane characterization by microscopic methods: Multiscale structure. Journal of Membrane Science, 2008, 315 (1-2), pp.82 - 92. ⟨10.1016/j.memsci.2008.02.010⟩. ⟨hal-01916696⟩
S. Renou, S. Poulain, J.G. Givaudan, Philippe Moulin. Treatment process adapted to stabilized leachates: Lime precipitation–prefiltration–reverse osmosis. Journal of Membrane Science, 2008, 313 (1-2), pp.9 - 22. ⟨10.1016/j.memsci.2007.11.023⟩. ⟨hal-01916688⟩ Plus de détails...
S. Renou, S. Poulain, J.G. Givaudan, Philippe Moulin. Treatment process adapted to stabilized leachates: Lime precipitation–prefiltration–reverse osmosis. Journal of Membrane Science, 2008, 313 (1-2), pp.9 - 22. ⟨10.1016/j.memsci.2007.11.023⟩. ⟨hal-01916688⟩
S. Renou, J.G. Givaudan, S. Poulain, F. Dirassouyan, Philippe Moulin. Landfill leachate treatment: Review and opportunity. Journal of Hazardous Materials, 2008, 150 (3), pp.468 - 493. ⟨10.1016/j.jhazmat.2007.09.077⟩. ⟨hal-01916687⟩ Plus de détails...
S. Renou, J.G. Givaudan, S. Poulain, F. Dirassouyan, Philippe Moulin. Landfill leachate treatment: Review and opportunity. Journal of Hazardous Materials, 2008, 150 (3), pp.468 - 493. ⟨10.1016/j.jhazmat.2007.09.077⟩. ⟨hal-01916687⟩
Y. Wyart, Gaelle Georges, Carole Deumie, Claude Amra, P. Moulin. Membrane characterization by microscopic methods: multiscale structure,”. Journal of Membrane Science, 2008, 315, pp.82-92. ⟨hal-00361014⟩ Plus de détails...
Y. Wyart, Gaelle Georges, Carole Deumie, Claude Amra, P. Moulin. Membrane characterization by microscopic methods: multiscale structure,”. Journal of Membrane Science, 2008, 315, pp.82-92. ⟨hal-00361014⟩
Y. Wyart, Gaelle Georges, Carole Deumie, Claude Amra, P. Moulin. Membrane characterization by optical methods: ellipsometry of the scattered fields. Journal of Membrane Science, 2008, pp.145-153. ⟨hal-00361015⟩ Plus de détails...
Y. Wyart, Gaelle Georges, Carole Deumie, Claude Amra, P. Moulin. Membrane characterization by optical methods: ellipsometry of the scattered fields. Journal of Membrane Science, 2008, pp.145-153. ⟨hal-00361015⟩
Frederic Heymes, Peggy Manno Demoustier, Françoise Charbit, Jean-Louis Fanlo, Philippe Moulin. Treatment of gas containing hydrophobic VOCs by a hybrid absorption–pervaporation process: The case of toluene. Chemical Engineering Science, 2007, 62 (9), pp.2576 - 2589. ⟨10.1016/j.ces.2007.02.001⟩. ⟨hal-01916650⟩ Plus de détails...
Frederic Heymes, Peggy Manno Demoustier, Françoise Charbit, Jean-Louis Fanlo, Philippe Moulin. Treatment of gas containing hydrophobic VOCs by a hybrid absorption–pervaporation process: The case of toluene. Chemical Engineering Science, 2007, 62 (9), pp.2576 - 2589. ⟨10.1016/j.ces.2007.02.001⟩. ⟨hal-01916650⟩
C. Hessel, C. Allegre, M. Maisseu, F. Charbit, P. Moulin. Guidelines and legislation for dye house effluents. Journal of Environmental Management, 2007, 83 (2), pp.171 - 180. ⟨10.1016/j.jenvman.2006.02.012⟩. ⟨hal-01888134⟩ Plus de détails...
C. Hessel, C. Allegre, M. Maisseu, F. Charbit, P. Moulin. Guidelines and legislation for dye house effluents. Journal of Environmental Management, 2007, 83 (2), pp.171 - 180. ⟨10.1016/j.jenvman.2006.02.012⟩. ⟨hal-01888134⟩
Philippe Moulin, K. Tabet, Ph. Moulin, J. Vilomet, A. Amberto, et al.. Purification of landfill leachate with membrane processes: preliminary studies for an industrial plant. Separation Science and Technology, 2007, 37 (5), pp.1041 - 1063. ⟨10.1081/SS-120002240⟩. ⟨hal-01916611⟩ Plus de détails...
Philippe Moulin, K. Tabet, Ph. Moulin, J. Vilomet, A. Amberto, et al.. Purification of landfill leachate with membrane processes: preliminary studies for an industrial plant. Separation Science and Technology, 2007, 37 (5), pp.1041 - 1063. ⟨10.1081/SS-120002240⟩. ⟨hal-01916611⟩
R. Moll, D. Veyret, F. Charbit, P. Moulin. Dean vortices applied to membrane process. Journal of Membrane Science, 2007, 288 (1-2), pp.321 - 335. ⟨10.1016/j.memsci.2006.11.037⟩. ⟨hal-01888144⟩ Plus de détails...
R. Moll, D. Veyret, F. Charbit, P. Moulin. Dean vortices applied to membrane process. Journal of Membrane Science, 2007, 288 (1-2), pp.321 - 335. ⟨10.1016/j.memsci.2006.11.037⟩. ⟨hal-01888144⟩
R. Moll, D. Veyret, F. Charbit, P. Moulin. Dean vortices applied to membrane process. Journal of Membrane Science, 2007, 288 (1-2), pp.307 - 320. ⟨10.1016/j.memsci.2006.11.030⟩. ⟨hal-01888141⟩ Plus de détails...
R. Moll, D. Veyret, F. Charbit, P. Moulin. Dean vortices applied to membrane process. Journal of Membrane Science, 2007, 288 (1-2), pp.307 - 320. ⟨10.1016/j.memsci.2006.11.030⟩. ⟨hal-01888141⟩
R. Ghidossi, J.V. Daurelle, D. Veyret, Philippe Moulin. Simplified CFD approach of a hollow fiber ultrafiltration system. Chemical Engineering Journal, 2006, 123 (3), pp.117 - 125. ⟨10.1016/j.cej.2006.07.007⟩. ⟨hal-01916605⟩ Plus de détails...
R. Ghidossi, J.V. Daurelle, D. Veyret, Philippe Moulin. Simplified CFD approach of a hollow fiber ultrafiltration system. Chemical Engineering Journal, 2006, 123 (3), pp.117 - 125. ⟨10.1016/j.cej.2006.07.007⟩. ⟨hal-01916605⟩
N Marciano, N. Mugnier, P Clerin, B Cristol, Philippe Moulin. Nanofiltration of Bayer process solutions. Journal of Membrane Science, 2006, 281 (1-2), pp.260 - 267. ⟨10.1016/j.memsci.2006.03.040⟩. ⟨hal-01916680⟩ Plus de détails...
N Marciano, N. Mugnier, P Clerin, B Cristol, Philippe Moulin. Nanofiltration of Bayer process solutions. Journal of Membrane Science, 2006, 281 (1-2), pp.260 - 267. ⟨10.1016/j.memsci.2006.03.040⟩. ⟨hal-01916680⟩
Philippe Moulin, N Barriosmartinez, B Barbot, B. Marrot, N Moulin, et al.. Degradation of synthetic phenol-containing wastewaters by MBR. Journal of Membrane Science, 2006, 281 (1-2), pp.288 - 296. ⟨10.1016/j.memsci.2006.03.048⟩. ⟨hal-01916655⟩ Plus de détails...
Philippe Moulin, N Barriosmartinez, B Barbot, B. Marrot, N Moulin, et al.. Degradation of synthetic phenol-containing wastewaters by MBR. Journal of Membrane Science, 2006, 281 (1-2), pp.288 - 296. ⟨10.1016/j.memsci.2006.03.048⟩. ⟨hal-01916655⟩
Frederic Heymes, Peggy Manno Demoustier, Françoise Charbit, Jean-Louis Fanlo, Philippe Moulin. Hydrodynamics and mass transfer in a packed column: Case of toluene absorption with a viscous absorbent. Chemical Engineering Science, 2006, 61 (15), pp.5094 - 5106. ⟨10.1016/j.ces.2006.03.037⟩. ⟨hal-01916631⟩ Plus de détails...
Frederic Heymes, Peggy Manno Demoustier, Françoise Charbit, Jean-Louis Fanlo, Philippe Moulin. Hydrodynamics and mass transfer in a packed column: Case of toluene absorption with a viscous absorbent. Chemical Engineering Science, 2006, 61 (15), pp.5094 - 5106. ⟨10.1016/j.ces.2006.03.037⟩. ⟨hal-01916631⟩
C. Durbec, M. Dumas, J.M. Espenan, Philippe Moulin. Mobile technology: membrane plant helps fire services. Filtration & Separation, 2006, 43 (5), pp.13 - 15. ⟨10.1016/S0015-1882(06)70885-0⟩. ⟨hal-01916683⟩ Plus de détails...
R. Ghidossi, D. Veyret, P. Moulin. Computational fluid dynamics applied to membranes: State of the art and opportunities. Chemical Engineering and Processing: Process Intensification, 2006, 45 (6), pp.437 - 454. ⟨10.1016/j.cep.2005.11.002⟩. ⟨hal-01888150⟩ Plus de détails...
R. Ghidossi, D. Veyret, P. Moulin. Computational fluid dynamics applied to membranes: State of the art and opportunities. Chemical Engineering and Processing: Process Intensification, 2006, 45 (6), pp.437 - 454. ⟨10.1016/j.cep.2005.11.002⟩. ⟨hal-01888150⟩
Journal: Chemical Engineering and Processing: Process Intensification
B. Marrot, A. Barrios-Martinez, Philippe Moulin, N. Roche. Biodegradation of high phenol concentration by activated sludge in an immersed membrane bioreactor. Biochemical Engineering Journal, 2006, 30 (2), pp.174 - 183. ⟨10.1016/j.bej.2006.03.006⟩. ⟨hal-01916654⟩ Plus de détails...
B. Marrot, A. Barrios-Martinez, Philippe Moulin, N. Roche. Biodegradation of high phenol concentration by activated sludge in an immersed membrane bioreactor. Biochemical Engineering Journal, 2006, 30 (2), pp.174 - 183. ⟨10.1016/j.bej.2006.03.006⟩. ⟨hal-01916654⟩
C. Allegre, P. Moulin, B. Gleize, G. Pieroni, F. Charbit. Cholesterol removal by nanofiltration: Applications in nutraceutics and nutritional supplements. Journal of Membrane Science, 2006, 269 (1-2), pp.109 - 117. ⟨10.1016/j.memsci.2005.06.025⟩. ⟨hal-01888124⟩ Plus de détails...
C. Allegre, P. Moulin, B. Gleize, G. Pieroni, F. Charbit. Cholesterol removal by nanofiltration: Applications in nutraceutics and nutritional supplements. Journal of Membrane Science, 2006, 269 (1-2), pp.109 - 117. ⟨10.1016/j.memsci.2005.06.025⟩. ⟨hal-01888124⟩
C. Allegre, P. Moulin, M. Maisseu, F. Charbit. Treatment and reuse of reactive dyeing effluents. Journal of Membrane Science, 2006, 269 (1-2), pp.15 - 34. ⟨10.1016/j.memsci.2005.06.014⟩. ⟨hal-01888129⟩ Plus de détails...
C. Allegre, P. Moulin, M. Maisseu, F. Charbit. Treatment and reuse of reactive dyeing effluents. Journal of Membrane Science, 2006, 269 (1-2), pp.15 - 34. ⟨10.1016/j.memsci.2005.06.014⟩. ⟨hal-01888129⟩
Frederic Heymes, Peggy Manno-Demoustier, Françoise Charbit, Jean Fanlo, Philippe Moulin. A new efficient absorption liquid to treat exhaust air loaded with toluene. Chemical Engineering Journal, 2006, 115 (3), pp.225 - 231. ⟨10.1016/j.cej.2005.10.011⟩. ⟨hal-01916629⟩ Plus de détails...
Frederic Heymes, Peggy Manno-Demoustier, Françoise Charbit, Jean Fanlo, Philippe Moulin. A new efficient absorption liquid to treat exhaust air loaded with toluene. Chemical Engineering Journal, 2006, 115 (3), pp.225 - 231. ⟨10.1016/j.cej.2005.10.011⟩. ⟨hal-01916629⟩
F. Heymes, P Manno Demoustier, F. Charbit, Jean-Louis Fanlo, Philippe Moulin. Recovery of toluene from high temperature boiling absorbents by pervaporation. Journal of Membrane Science, 2006, 284 (1-2), pp.145 - 154. ⟨10.1016/j.memsci.2006.07.029⟩. ⟨hal-01916633⟩ Plus de détails...
The treatment of gaseous effluents containing hydrophobic volatile organic compounds (VOCS) can be carried out by absorption with the use of a heavy hydrophobic solvent. These solvents must be regenerated in order to be reused in the absorption process. A possible solution to continuously regenerate the absorbent is a hybrid absorption–pervaporation process, with the pervaporation step serving to regenerate the solvent. This piece of research examines the feasibility of that regeneration step. The VOC used was toluene and three high temperature boiling absorbents were considered: di(2-ethylhexyl) adipate (DEHA), diisobutyl phthalate (DIBP) and polyethylene glycol 400 (PEG 400). Bibliographical research and a preliminary theoretical evaluation led to the choice of PDMS for separating the toluene/absorbent mixture, whatever the absorbent. Experiments using various absorbents showed that toluene passed through the membrane. The extracted toluene flows from DEHA were considerably higher that those measured using diisobutyl phthalate or polyethylene glycol. Therefore, di(2-ethylhexyl) adipate would be the most easily regenerable absorbent. No absorbent was found in the permeate, but a slow accumulation of DEHA was observed in the porous support. This point is of interest and could decrease the separation efficiency. The predominant effect of the liquid boundary layer was highlighted. The resistance-in-series theory allowed the impact of the boundary layer to be quantified. The flow rates of toluene extraction from a DEHA solution were low and require improving the pervaporation regeneration performance to use this kind of separation in an industrial hybrid process.
F. Heymes, P Manno Demoustier, F. Charbit, Jean-Louis Fanlo, Philippe Moulin. Recovery of toluene from high temperature boiling absorbents by pervaporation. Journal of Membrane Science, 2006, 284 (1-2), pp.145 - 154. ⟨10.1016/j.memsci.2006.07.029⟩. ⟨hal-01916633⟩
B. Marrot, A. Barrios-Martinez, Philippe Moulin, N. Roche. Experimental Study of Mass Transfer Phenomena in a Cross Flow Membrane Bioreactor: Aeration and Membrane Separation. Engineering in Life Sciences, 2005, 5 (5), pp.409 - 414. ⟨10.1002/elsc.200520090⟩. ⟨hal-01916679⟩ Plus de détails...
B. Marrot, A. Barrios-Martinez, Philippe Moulin, N. Roche. Experimental Study of Mass Transfer Phenomena in a Cross Flow Membrane Bioreactor: Aeration and Membrane Separation. Engineering in Life Sciences, 2005, 5 (5), pp.409 - 414. ⟨10.1002/elsc.200520090⟩. ⟨hal-01916679⟩
P. Ndiaye, Philippe Moulin, L. Domínguez, J.C. Millet, F. Charbit. Removal of fluoride from electronic industrial effluentby RO membrane separation. Desalination, 2005, 173 (1), pp.25 - 32. ⟨10.1016/j.desal.2004.07.042⟩. ⟨hal-01916624⟩ Plus de détails...
P. Ndiaye, Philippe Moulin, L. Domínguez, J.C. Millet, F. Charbit. Removal of fluoride from electronic industrial effluentby RO membrane separation. Desalination, 2005, 173 (1), pp.25 - 32. ⟨10.1016/j.desal.2004.07.042⟩. ⟨hal-01916624⟩
P. Guichardon, Philippe Moulin, F. Tosini, L. Cara, F. Charbit. Comparative study of semi-solid liposome purification by different separation methods. Separation and Purification Technology, 2005, 41 (2), pp.123 - 131. ⟨10.1016/j.seppur.2004.01.010⟩. ⟨hal-01916627⟩ Plus de détails...
P. Guichardon, Philippe Moulin, F. Tosini, L. Cara, F. Charbit. Comparative study of semi-solid liposome purification by different separation methods. Separation and Purification Technology, 2005, 41 (2), pp.123 - 131. ⟨10.1016/j.seppur.2004.01.010⟩. ⟨hal-01916627⟩
P. Ndiaye, Philippe Moulin, L. Domínguez, J.C. Millet, F. Charbit. Treatment of silica effluents: ultrafiltration or coagulation–decantation. Journal of Hazardous Materials, 2004, 116 (1-2), pp.75 - 81. ⟨10.1016/j.jhazmat.2004.07.006⟩. ⟨hal-01916623⟩ Plus de détails...
P. Ndiaye, Philippe Moulin, L. Domínguez, J.C. Millet, F. Charbit. Treatment of silica effluents: ultrafiltration or coagulation–decantation. Journal of Hazardous Materials, 2004, 116 (1-2), pp.75 - 81. ⟨10.1016/j.jhazmat.2004.07.006⟩. ⟨hal-01916623⟩
C. Allegre, M. Maisseu, F. Charbit, P. Moulin. Coagulation–flocculation–decantation of dye house effluents: concentrated effluents. Journal of Hazardous Materials, 2004, 116 (1-2), pp.57 - 64. ⟨10.1016/j.jhazmat.2004.07.005⟩. ⟨hal-01888130⟩ Plus de détails...
C. Allegre, M. Maisseu, F. Charbit, P. Moulin. Coagulation–flocculation–decantation of dye house effluents: concentrated effluents. Journal of Hazardous Materials, 2004, 116 (1-2), pp.57 - 64. ⟨10.1016/j.jhazmat.2004.07.005⟩. ⟨hal-01888130⟩
B. Marrot, A. Barrios-Martinez, P. Moulin, N. Roche. Industrial wastewater treatment in a membrane bioreactor: A review. Environmental Progress -New York-, 2004, 23 (1), pp.59 - 68. ⟨10.1002/ep.10001⟩. ⟨hal-01888096⟩ Plus de détails...
B. Marrot, A. Barrios-Martinez, P. Moulin, N. Roche. Industrial wastewater treatment in a membrane bioreactor: A review. Environmental Progress -New York-, 2004, 23 (1), pp.59 - 68. ⟨10.1002/ep.10001⟩. ⟨hal-01888096⟩
Carine Allègre, Philippe Moulin, Michel Maisseu, Françoise Charbit. Savings and re-use of salts and water present in dye house effluents. Desalination, 2004, 162, pp.13 - 22. ⟨10.1016/S0011-9164(04)00022-0⟩. ⟨hal-01916620⟩ Plus de détails...
Carine Allègre, Philippe Moulin, Michel Maisseu, Françoise Charbit. Savings and re-use of salts and water present in dye house effluents. Desalination, 2004, 162, pp.13 - 22. ⟨10.1016/S0011-9164(04)00022-0⟩. ⟨hal-01916620⟩
S. Chomel, Philippe Douek, P. Moulin, M. Vaudoux, B. Marchand. Contrast-enhanced MR angiography of the foot: anatomy and clinical application in patients with diabetes. American Journal of Roentgenology, 2004, 182 (6), pp.1435-1442. ⟨10.2214/ajr.182.6.1821435⟩. ⟨hal-02078949⟩ Plus de détails...
S. Chomel, Philippe Douek, P. Moulin, M. Vaudoux, B. Marchand. Contrast-enhanced MR angiography of the foot: anatomy and clinical application in patients with diabetes. American Journal of Roentgenology, 2004, 182 (6), pp.1435-1442. ⟨10.2214/ajr.182.6.1821435⟩. ⟨hal-02078949⟩
Philippe Moulin, E. Carretier, M Moulin, M Beaujean, F Charbit. Purification and dehydration of methylal by pervaporation. Journal of Membrane Science, 2003, 217 (1-2), pp.159 - 171. ⟨10.1016/S0376-7388(03)00125-X⟩. ⟨hal-01888090⟩ Plus de détails...
Philippe Moulin, E. Carretier, M Moulin, M Beaujean, F Charbit. Purification and dehydration of methylal by pervaporation. Journal of Membrane Science, 2003, 217 (1-2), pp.159 - 171. ⟨10.1016/S0376-7388(03)00125-X⟩. ⟨hal-01888090⟩
P. Moulin, H. Roques. Zeta potential measurement of calcium carbonate. Journal of Colloid and Interface Science, 2003, 261 (1), pp.115 - 126. ⟨10.1016/S0021-9797(03)00057-2⟩. ⟨hal-01889351⟩ Plus de détails...
P. Moulin, H. Roques. Zeta potential measurement of calcium carbonate. Journal of Colloid and Interface Science, 2003, 261 (1), pp.115 - 126. ⟨10.1016/S0021-9797(03)00057-2⟩. ⟨hal-01889351⟩
Philippe Moulin, Sylvain Galier, Stephane Issanchou, Michael J. Clifton, Philippe Aptel. Electrochemical measurement of velocity grandient at the wall of a helical tube. AIChE Journal, 2003. ⟨hal-01916675⟩ Plus de détails...
Philippe Moulin, Sylvain Galier, Stephane Issanchou, Michael J. Clifton, Philippe Aptel. Electrochemical measurement of velocity grandient at the wall of a helical tube. AIChE Journal, 2003. ⟨hal-01916675⟩
Philippe Moulin, T Allouane, Laure Latapie, C. Raufast, F Charbit. Treatment and valorisation of an industrial effluent by pervaporation. Journal of Membrane Science, 2002, 197 (1-2), pp.103 - 115. ⟨10.1016/S0376-7388(01)00603-2⟩. ⟨hal-01916615⟩ Plus de détails...
Philippe Moulin, T Allouane, Laure Latapie, C. Raufast, F Charbit. Treatment and valorisation of an industrial effluent by pervaporation. Journal of Membrane Science, 2002, 197 (1-2), pp.103 - 115. ⟨10.1016/S0376-7388(01)00603-2⟩. ⟨hal-01916615⟩
Philippe Moulin, T Allouane, Laure Latapie, C. Raufast, F Charbit. Treatment and valorisation of an industrial effluent by pervaporation. Journal of Membrane Science, 2002, 197 (1-2), pp.103 - 115. ⟨10.1016/S0376-7388(01)00603-2⟩. ⟨hal-01916615⟩ Plus de détails...
Philippe Moulin, T Allouane, Laure Latapie, C. Raufast, F Charbit. Treatment and valorisation of an industrial effluent by pervaporation. Journal of Membrane Science, 2002, 197 (1-2), pp.103 - 115. ⟨10.1016/S0376-7388(01)00603-2⟩. ⟨hal-01916615⟩
Philippe Moulin, R Moll, Ph Moulin, D. Veyret, F Charbit. Numerical simulation of Dean vortices: fluid trajectories. Journal of Membrane Science, 2002, 197 (1-2), pp.157 - 172. ⟨10.1016/S0376-7388(01)00606-8⟩. ⟨hal-01916600⟩ Plus de détails...
Philippe Moulin, R Moll, Ph Moulin, D. Veyret, F Charbit. Numerical simulation of Dean vortices: fluid trajectories. Journal of Membrane Science, 2002, 197 (1-2), pp.157 - 172. ⟨10.1016/S0376-7388(01)00606-8⟩. ⟨hal-01916600⟩
N Capelle, Philippe Moulin, F Charbit, R. Gallo. Purification of heterocyclic drug derivatives from concentrated saline solution by nanofiltration. Journal of Membrane Science, 2002, 196 (1), pp.125 - 141. ⟨10.1016/S0376-7388(01)00601-9⟩. ⟨hal-01916606⟩ Plus de détails...
N Capelle, Philippe Moulin, F Charbit, R. Gallo. Purification of heterocyclic drug derivatives from concentrated saline solution by nanofiltration. Journal of Membrane Science, 2002, 196 (1), pp.125 - 141. ⟨10.1016/S0376-7388(01)00601-9⟩. ⟨hal-01916606⟩
Philippe Moulin, Damien Veyret, Françoise Charbit. Dean vortices: comparison of numerical simulation of shear stress and improvement of mass transfer in membrane processes at low permeation fluxes. Journal of Membrane Science, 2001, 183 (2), pp.149 - 162. ⟨10.1016/S0376-7388(00)00556-1⟩. ⟨hal-01916597⟩ Plus de détails...
Philippe Moulin, Damien Veyret, Françoise Charbit. Dean vortices: comparison of numerical simulation of shear stress and improvement of mass transfer in membrane processes at low permeation fluxes. Journal of Membrane Science, 2001, 183 (2), pp.149 - 162. ⟨10.1016/S0376-7388(00)00556-1⟩. ⟨hal-01916597⟩
D.N. Kuakuvi, Philippe Moulin, F. Charbit. Dean vortices: a comparison of woven versus helical and straight hollow fiber membrane modules. Journal of Membrane Science, 2000, 171 (1), pp.59 - 65. ⟨10.1016/S0376-7388(99)00379-8⟩. ⟨hal-01916590⟩ Plus de détails...
D.N. Kuakuvi, Philippe Moulin, F. Charbit. Dean vortices: a comparison of woven versus helical and straight hollow fiber membrane modules. Journal of Membrane Science, 2000, 171 (1), pp.59 - 65. ⟨10.1016/S0376-7388(99)00379-8⟩. ⟨hal-01916590⟩
Philippe Moulin, P Manno, C. Rouch, C. Serra, M.J Clifton, et al.. Flux improvement by Dean vortices: ultrafiltration of colloidal suspensions and macromolecular solutions. Journal of Membrane Science, 1999, 156 (1), pp.109 - 130. ⟨10.1016/S0376-7388(98)00333-0⟩. ⟨hal-01916588⟩ Plus de détails...
Philippe Moulin, P Manno, C. Rouch, C. Serra, M.J Clifton, et al.. Flux improvement by Dean vortices: ultrafiltration of colloidal suspensions and macromolecular solutions. Journal of Membrane Science, 1999, 156 (1), pp.109 - 130. ⟨10.1016/S0376-7388(98)00333-0⟩. ⟨hal-01916588⟩
P. Manno, Philippe Moulin, J.C. Rouch, M. Clifton, P. Aptel. Mass transfer improvement in helically wound hollow fibre ultrafiltration modulesYeast suspensions. Separation and Purification Technology, 1998, 14 (1-3), pp.175 - 182. ⟨10.1016/S1383-5866(98)00072-0⟩. ⟨hal-01916565⟩ Plus de détails...
P. Manno, Philippe Moulin, J.C. Rouch, M. Clifton, P. Aptel. Mass transfer improvement in helically wound hollow fibre ultrafiltration modulesYeast suspensions. Separation and Purification Technology, 1998, 14 (1-3), pp.175 - 182. ⟨10.1016/S1383-5866(98)00072-0⟩. ⟨hal-01916565⟩
S Schnabel, Philippe Moulin, Q.T Nguyen, D. Roizard, P Aptel. Removal of volatile organic components (VOCs) from water by pervaporation: separation improvement by Dean vortices. Journal of Membrane Science, 1998, 142 (1), pp.129 - 141. ⟨10.1016/S0376-7388(97)00326-8⟩. ⟨hal-01916581⟩ Plus de détails...
S Schnabel, Philippe Moulin, Q.T Nguyen, D. Roizard, P Aptel. Removal of volatile organic components (VOCs) from water by pervaporation: separation improvement by Dean vortices. Journal of Membrane Science, 1998, 142 (1), pp.129 - 141. ⟨10.1016/S0376-7388(97)00326-8⟩. ⟨hal-01916581⟩
