Aymeric Fabien, Guillaume Lefebvre, Elisabeth Badens, Brice Calvignac, Damien Chaudanson, et al.. Contact angle of ethanol, water, and their mixtures on stainless steel surfaces in dense carbon dioxide. Journal of Colloid and Interface Science, 2024, 655, pp.535-545. ⟨10.1016/j.jcis.2023.10.163⟩. ⟨hal-04316090⟩ Plus de détails...
Hypothesis Contact angle can be a key parameter in chemical engineering. However, the development and the optimization of numerous processes using supercritical CO2, considered as environmentally friendly, requires new measurements under dense CO2 atmosphere. Besides, the influence of the roughness or the wetting regime on the contact angle is known at ambient conditions but remains to be discussed for systems under high pressure. Experimental Contact angle measurements of ethanol, water, and their mixtures, with ethanol mass fractions ranging from 0.25 to 0.75, on two stainless steels in saturated CO2 at pressures ranging from 0.1 MPa to 15.1 MPa, and at 313 K and 333 K were carried out in a set-up improving mass transfer between the studied liquid and the continuous fluid phase. Stainless steel surfaces have been characterized by atomic force and scanning electron microscopies allowing the application of the Wenzel equation. Findings Ethanol wetted totally both stainless steels while contact angles of all other liquids were increased by the rise of pressure, with contact angles up to 128 ° for water at 15.1 MPa. Trapped bubbles were observed at the solid/liquid interface and the bubble formation is discussed. Furthermore, the potential influence of bubble presence on the wetting regime is prospected through the question: could the pressure rise modify the wetting regime?
Aymeric Fabien, Guillaume Lefebvre, Elisabeth Badens, Brice Calvignac, Damien Chaudanson, et al.. Contact angle of ethanol, water, and their mixtures on stainless steel surfaces in dense carbon dioxide. Journal of Colloid and Interface Science, 2024, 655, pp.535-545. ⟨10.1016/j.jcis.2023.10.163⟩. ⟨hal-04316090⟩
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⟩
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⟩
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
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
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⟩
Aymeric Fabien, Guillaume Lefebvre, Brice CALVIGNAC, Pierre Legout, Elisabeth Badens, et al.. Interfacial tension of ethanol, water, and their mixtures in high pressure carbon dioxide: Measurements and modeling. Journal of Colloid and Interface Science, 2022, 613, pp.847-856. ⟨10.1016/j.jcis.2022.01.058⟩. ⟨hal-04124118⟩ Plus de détails...
Hypothesis. It is particularly noteworthy to study interfacial tension behavior under pressurized carbon dioxide for supercritical processes such as crystallization or fractionation. For the latter, a liquid phase and a supercritical phase are in contact, and interfacial properties influence mass transfer phenomena and hydrodynamics. Ethanol-water mixture is a good theoretical study case also involved in a wide range of applications. Experimental: Interfacial tensions of ethanol, water and three mixtures, with an ethanol mass fraction from 0.25 to 0.75, under pressurized CO2 were measured for pressures ranging from 0.1 MPa to 15.1 MPa at 313.15 K and 333.15 K. A specific experimental set-up was used for CO2 phase saturation. Findings: This work brings interfacial tension data of five different solutions including water and ethanol in contact with CO2. Effects of pressure, temperature, carbon dioxide density and ethanol mass fraction are discussed regarding the literature. Significant discrepancies are found with previous literature data for ethanol-water mixtures. The "two-step" decrease observed when pressure or density increase is also discussed regarding both the concept of Widom line, and the polar and dispersive contributions of the surface tension of a component. For the first time, fair accurate interfacial tension modeling involving these contributions is addressed. (C) 2022 Elsevier Inc. All rights reserved.
Aymeric Fabien, Guillaume Lefebvre, Brice CALVIGNAC, Pierre Legout, Elisabeth Badens, et al.. Interfacial tension of ethanol, water, and their mixtures in high pressure carbon dioxide: Measurements and modeling. Journal of Colloid and Interface Science, 2022, 613, pp.847-856. ⟨10.1016/j.jcis.2022.01.058⟩. ⟨hal-04124118⟩
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⟩
Aymeric Fabien, Guillaume Lefebvre, Brice Calvignac, Pierre Legout, Elisabeth Badens, et al.. Interfacial tension of ethanol, water, and their mixtures in high pressure carbon dioxide: measurements and modeling. Journal of Colloid and Interface Science, 2022, 613, pp.847-56. ⟨10.1016/j.jcis.2022.01.058⟩. ⟨hal-03531186⟩ Plus de détails...
Hypothesis: It is particularly noteworthy to study interfacial tension behavior under pressurized carbon dioxide for supercritical processes such as crystallization or fractionation. For the latter, a liquid phase and a supercritical phase are in contact, and interfacial properties influence mass transfer phenomena and hydrodynamics. Ethanol-water mixture is a good theoretical study case also involved in a wide range of applications. Experimental: Interfacial tensions of ethanol, water and three mixtures, with an ethanol mass fraction from 0.25 to 0.75, under pressurized CO 2 were measured for pressures ranging from 0.1 MPa to 15.1 MPa at 313.15 K and 333.15 K. A specific experimental setup was used for CO 2 phase saturation. Findings: This work brings interfacial tension data of five different solutions including water and ethanol in contact with CO 2. Effects of pressure, temperature, carbon dioxide density and ethanol mass fraction are discussed regarding the literature. Significant discrepancies are found with previous literature data for ethanol-water mixtures. The "two-step" decrease observed when pressure or density increase is also discussed regarding both the concept of Widom line, and the polar and dispersive contributions of the surface tension of a component. For the first time, fair accurate interfacial tension modeling involving these contributions is addressed.
Aymeric Fabien, Guillaume Lefebvre, Brice Calvignac, Pierre Legout, Elisabeth Badens, et al.. Interfacial tension of ethanol, water, and their mixtures in high pressure carbon dioxide: measurements and modeling. Journal of Colloid and Interface Science, 2022, 613, pp.847-56. ⟨10.1016/j.jcis.2022.01.058⟩. ⟨hal-03531186⟩
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-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⟩
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⟩
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-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⟩
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⟩
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⟩
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-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⟩
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⟩
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-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⟩
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⟩
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
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
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⟩
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⟩
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⟩
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⟩
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, 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⟩
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⟩
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
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⟩
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⟩
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, 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
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
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⟩
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
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⟩
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⟩
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⟩
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⟩
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⟩
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⟩
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⟩
