Polymorphism control in crystallization processes is critical for ensuring the final quality of active pharmaceutical ingredients (APIs). In the present research, the solvent-mediated phase transformation (SMPT) of paracetamol, a widely used API, from its metastable form II to the stable form I during seeded batch cooling crystallization in isopropyl alcohol/water solution is investigated. The study explores the utility of offline FT-NIR spectroscopy and an inline PAT Blaze900 probe to detect paracetamol polymorphs and monitor polymorphic changes. Key findings demonstrate that FT-NIR offers a robust offline alternative for polymorphism detection and monitoring. The PAT Blaze900 recordings, in terms of chord length counts and distributions, also provide additional information about form II SMPT and are in accordance with the FT-NIR prediction model output. The SMPT kinetics are influenced by operational parameters such as supersaturation and operational and cooling temperature. Optimization of these parameters enabled better control over the SMPT kinetics, paving the way for efficient stabilization of paracetamol metastable form II to 30 min before complete conversion to the most stable form I.
Carla Kalakech, Asma Madmar, Emilie Gagnière, Géraldine Agusti, Denis Mangin, et al.. Monitoring of Paracetamol Solvent-Mediated Phase Transformation in Seeded Batch Crystallization Processes. Crystal Growth & Design, 2025, ⟨10.1021/acs.cgd.4c01650⟩. ⟨hal-05006905⟩
Hugo Taligrot, Sébastien Wurtzer, Mathias Monnot, Jacques Geslin, Laurent Moulin, et al.. Effect of volumetric concentration factor on virus removal for low-pressure reverse osmosis membrane in drinking water production: a study on different scales. Water Research, 2024, 267, pp.122536. ⟨10.1016/j.watres.2024.122536⟩. ⟨hal-04946791⟩ Plus de détails...
Reverse osmosis membranes are intended to constitute a complete physical barrier against nanometricsized pathogens such as enteric viruses. Literature describes low-pressure reverse osmosis achieves high viral removal rates (above 5 log), surpassing those of ultrafiltration (1 to 3 log). However, these studies often used individual viruses and high feed viral concentrations (above 10 9 virus L -1 ), greater than typical viral concentrations present in the environment like groundwater, to promote virus detection in the permeate. These high concentrations can promote viral aggregation, potentially affecting the observed retention. This work evaluates the simultaneous elimination of three viruses during the production of drinking water by low-pressure reverse osmosis: two enteric viruses (adenovirus 41 and coxsackievirus-B5) and bacteriophage MS2, a widely used virus surrogate in the literature. The permeates produced by low-pressure reverse osmosis were concentrated to allow virus detection in permeate at lower feed concentrations (10 6 virus L -1 ) while staying above the limits of detection and quantification. Experiments were carried out on two pilot plants of different scales (laboratory and semi-industrial) to assess the potential effect of the number of membranes and O-rings on virus retention. The effect of the volume concentration factor on low-pressure reverse osmosis efficiency was evaluated for each scale. Results indicate an average viral reduction of 6 log (up to 7 log), regardless of the size of the virus or the scale of LPRO pilot. For the semi-industrial scale, better retention was observed as the volume concentration factor increased. However, viruses were still present in the permeate for each scale (even if close to the detection limit), indicating that retention was not complete. At the same feed viral concentrations, the number of viruses recovered in the semi-industrial scale permeates was higher than in the laboratory scale. A 24-fold greater the number of membranes and O-rings used for the semi-industrial scale showed that micro-leaks through O-rings could be responsible for the passage of viruses into the permeate.
Hugo Taligrot, Sébastien Wurtzer, Mathias Monnot, Jacques Geslin, Laurent Moulin, et al.. Effect of volumetric concentration factor on virus removal for low-pressure reverse osmosis membrane in drinking water production: a study on different scales. Water Research, 2024, 267, pp.122536. ⟨10.1016/j.watres.2024.122536⟩. ⟨hal-04946791⟩
Carla Kalakech, Géraldine Agusti, Emilie Gagnière, Ruben Vera, Denis Mangin, et al.. Paracetamol polymorphs detection in suspension via a new ex situ Fourier Transform Near Infrared spectroscopy method. Chemical Engineering Research and Design, 2024, 208, pp.808-819. ⟨10.1016/j.cherd.2024.07.028⟩. ⟨hal-04743457⟩ Plus de détails...
This paper addresses the solid-state and in suspension characterization of the stable monoclinic form I and the metastable orthorhombic form II of paracetamol via differential scanning calorimetry (DSC), X-Ray diffraction (XRD) and Fourier transform near infrared spectroscopy (FT-NIR) methods. For generating the metastable form II, DSC technique was used and both polymorphs were characterized via XRD. It was demonstrated that form II crystals were stable until 29 days minimum of storage and no solid-state transformation occurred (form I trace less than 5 %). Additionally, the detection of this form in suspension was investigated via DSC, XRD and FT-NIR. The DSC was not a suitable method since it is highly sensitive to temperature and solution evaporation whereas XRD showed its capacity in detecting both forms in suspension but also in monitoring the solvent-mediated transformation for highly concentrated suspensions. On the other hand, ex situ FT-NIR method combined with partial least square discriminant analysis (PLS-DA) outperformed both methods. Indeed, it offered an outstanding distinction between paracetamol form I, form II and the mixture of the two forms, and an accurate monitoring of the solvent-mediated transformation. This approach showed good statistical performances with a low root mean square error of calibration (RMSEC), root mean square error of cross validation (RMSECV) and root mean square error of prediction (RMSEP) values (RMSEC=20 %; RMSECV=25 %; RMSEP=21 %), low classification errors (less than 3.2 %) and high specificity and sensitivity (higher than 93 %).
Carla Kalakech, Géraldine Agusti, Emilie Gagnière, Ruben Vera, Denis Mangin, et al.. Paracetamol polymorphs detection in suspension via a new ex situ Fourier Transform Near Infrared spectroscopy method. Chemical Engineering Research and Design, 2024, 208, pp.808-819. ⟨10.1016/j.cherd.2024.07.028⟩. ⟨hal-04743457⟩
M. Monnot, Joanna Ollivier, H. Taligrot, Pascal Garry, Clémence Cordier, et al.. Retention of Virus Versus Surrogate, by Ultrafiltration in Seawater: Case Study of Norovirus Versus Tulane. Food and Environmental Virology, 2024, 16 (1), pp.14-24. ⟨10.1007/s12560-023-09574-z⟩. ⟨hal-04669260⟩ Plus de détails...
In the field of chemical engineering and water treatment, the study of viruses, included surrogates, is well documented. Often, surrogates are used to study viruses and their behavior because they can be produced in larger quantities in safer conditions and are easier to handle. In fact, surrogates allow studying microorganisms which are non-infectious to humans but share some properties similar to pathogenic viruses: structure, composition, morphology, and size. Human noroviruses, recognized as the leading cause of epidemics and sporadic cases of gastroenteritis across all age groups, may be mimicked by the Tulane virus. The objectives of this work were to study (i) the ultrafiltration of Tulane virus and norovirus to validate that Tulane virus can be used as a surrogate for norovirus in water treatment process and (ii) the retention of norovirus and the surrogate as a function of water quality to better understand the use of the latter pathogenic viruses. Ultrafiltration tests showed significant logarithmic reduction values (LRV) in viral RNA: around 2.5 for global LRV (i.e., based on the initial and permeate average concentrations) and between 2 and 6 for average LRV (i.e., retention rate considering the increase of viral concentration in the retentate), both for norovirus and the surrogate Tulane virus. Higher reduction rates (from 2 to 6 log genome copies) are obtained for higher initial concentrations (from 101 to 107 genome copies per mL) due to virus aggregation in membrane lumen. Tulane virus appears to be a good surrogate for norovirus retention by membrane processes.
M. Monnot, Joanna Ollivier, H. Taligrot, Pascal Garry, Clémence Cordier, et al.. Retention of Virus Versus Surrogate, by Ultrafiltration in Seawater: Case Study of Norovirus Versus Tulane. Food and Environmental Virology, 2024, 16 (1), pp.14-24. ⟨10.1007/s12560-023-09574-z⟩. ⟨hal-04669260⟩
Emilie Gout, Mathias Monnot, Olivier Boutin, Pierre Vanloot, Philippe Moulin. Prospects of industrial membrane concentrates: treatment of landfill leachates by coupling reverse osmosis and wet air oxidation. Environmental Science and Pollution Research, 2024, ⟨10.1007/s11356-024-32461-4⟩. ⟨hal-04593773⟩ Plus de détails...
Emilie Gout, Mathias Monnot, Olivier Boutin, Pierre Vanloot, Philippe Moulin. Prospects of industrial membrane concentrates: treatment of landfill leachates by coupling reverse osmosis and wet air oxidation. Environmental Science and Pollution Research, 2024, ⟨10.1007/s11356-024-32461-4⟩. ⟨hal-04593773⟩
Journal: Environmental Science and Pollution Research
Hugo Taligrot, Sébastien Wurtzer, Mathias Monnot, Laurent Moulin, Philippe Moulin. Implementation of a sensitive method to assess high virus retention performance of low-pressure reverse osmosis process. Food and Environmental Virology, 2023, 16 (1), pp.97-108. ⟨10.1007/s12560-023-09570-3⟩. ⟨hal-04946783⟩ Plus de détails...
Human enteric viruses are important etiological agents of waterborne diseases. Environmental waters are usually contaminated with low virus concentration requiring large concentration factors for effective detection by (RT)-qPCR. Low pressure reverse osmosis is often used to remove water contaminants, but very few studies focused on the effective virus removal of reverse osmosis treatment with feed concentrations as close as possible to environmental concentrations, and principally relied on theoretical virus removal. The very low viral concentrations usually reported in the permeates (i.e. at least 5 log of removal rate) mean that very large volumes of water need to be analysed to have sufficient sensitivity and assess the process efficiency. This study evaluates two methods for the concentration of adenoviruses, enteroviruses and MS2 bacteriophages at different viral concentrations in large (<200 L) and very large (>200 L) volumes. The first method is composed of two ultrafiltration membranes with low molecular weight cut-offs while the second method primarily relies on adsorption and elution phases using electropositive-charged filters. The recovery rates were assessed for both methods. For the ultrafiltration-based protocol, recovery rates were similar for each virus studied: 80 % on average at high virus concentrations (10 6 -10 7 viruses L -1 ) and 50 % at low virus concentrations (10 3 -10 4 viruses L - 1 ). For the electropositive-charged filter-based method, the average recoveries obtained were about 36 % for ADV 41, 57 % for CV-B5 and 1.6 % for MS2. The ultrafiltration-based method was then used to evaluate the performance of a low-pressure reverse osmosis lab-scale pilot plant. The retentions by reverse osmosis were similar for all studied viruses and the validated recovery rates applied to the system confirmed the reliability of the concentration method. This method was effective in concentrating all three viruses over a wide range of viral concentrations. Moreover, the second concentration method using electropositive-charged filters was studied, allowing the filtration of larger volumes of permeate from a semi-industrial low-pressure reverse osmosis pilot plant. This reference method was used because of the inability of the UF method to filter volumes on the order of one cubic metre.
Hugo Taligrot, Sébastien Wurtzer, Mathias Monnot, Laurent Moulin, Philippe Moulin. Implementation of a sensitive method to assess high virus retention performance of low-pressure reverse osmosis process. Food and Environmental Virology, 2023, 16 (1), pp.97-108. ⟨10.1007/s12560-023-09570-3⟩. ⟨hal-04946783⟩
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...
Sturgeon farming requires special attention. In addition to a relatively long rearing, climate change has resulted in increasingly high temperatures favorable to the emergence of pathogens. The control of water quality is essential especially the first years of life of the fish to prevent a mimivirus (AcIV-E) and a mycobacterium (Mycobacterium liflandii). These crises can lead to significant mortality (up to 70%) and have only been documented in hatchery populations where mortality can reach as high as 100 %. Mycobacterium liflandii, fatally affects young generations of Siberian sturgeon (Acipenser baerii) mainly in year N + 1 with mortalities reaching 30 % when river temperatures rise above 21 °C (summer period). The retention of these pathogenic microorganisms and of total flora by ultrafiltration was evaluated at a semi-industrial scale. The first part focuses on the specific removal of mimivirus, total flora and mycobacteria and the second part aims to evaluate over the long term (5 months) the hydraulic performances of the ultrafiltration process. Although the temperature (maximum 21 °C) was not sufficient for the mycobacteria to be detected, a good retention of mimiviruses (up to 4.7 log removal) and total flora was observed throughout the study. A more stable water quality was obtained after ultrafiltration and this work confirms the potential great interest of ultrafiltration for the biosecurity of fish production.
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-04543342⟩ Plus de détails...
Membrane processes (ultrafiltration, membrane bioreactor, reverse osmosis) are relevant for the remediation of wastewater as they generate large volumes of high-quality permeate. However, the remaining concentrates are highly polluted and require further treatment. Membrane concentrates are sufficiently concentrated to undergo a highly efficient wet air oxidation treatment to degrade refractory molecules. Wet air oxidation was performed on five industrial membrane concentrates with varying organic pollutants: bilge wastewater, landfill leachates, a complex industrial effluent, pharmaceutical sludge and dairy wastewater. The results showed three categories: (i) a low effect of the anoxic heating period and significant effect of oxidation duration, (ii) a significant effect of both the anoxic heating period and duration and (iii) an outstanding effect of the anoxic heating period and low effect of oxidation duration. The best removals were achieved at 300 °C, with total organic carbon removals between 75 and 98% and chemical oxygen demand removals between 82 and 99%, along with complete removal of fluorescent footprints. The coupling of membrane processes and wet air oxidation was proven to be robust and flexible for a wide variety of membrane processes and pollutants. A mass balance on the treatment path, including membrane permeate and wet air oxidation outlet, was calculated to assess discharge feasibility. This research demonstrates the potential of the hybrid process for effectively treating membrane concentrates and generating a safer outlet.
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-04543342⟩
J. Yang, M. Monnot, Y. Sun, L. Asia, P. Wong-Wah-Chung, et al.. Microplastics in different water samples (seawater, freshwater, and wastewater): Methodology approach for characterization using micro-FTIR spectroscopy. Water Research, 2023, 232, pp.119711. ⟨10.1016/j.watres.2023.119711⟩. ⟨hal-04055825⟩ Plus de détails...
Microplastics of millimeter dimensions have been widely investigated in environmental compartments and today, studies are mainly focused on particles of smaller dimensions (< 500 µm). However, as there are no relevant standards or policies for the preparation and analysis of complex water samples containing such particles, the results may be questionable. Therefore, a methodological approach for 10 µm to 500 µm microplastic analysis was developed using μ-FTIR spectroscopy coupled with the siMPle analytical software. This was undertaken on different water samples (sea, fresh, and wastewater) taking into consideration rinsing water, digestion protocols, collection of microplastics, and sample characteristics. Ultrapure water was the optimal rinsing water and ethanol was also proposed with a mandatory previous filtration. Although water quality could give some guidelines for the selection of digestion protocols, it is not the only decisive factor. The methodology approach by μ-FTIR spectroscopy was finally assessed to be effective and reliable. This improved quantitative and qualitative analytical methodology for microplastic detection can then be used to assess the removal efficiency of conventional and membrane treatment processes in different water treatment plants.
J. Yang, M. Monnot, Y. Sun, L. Asia, P. Wong-Wah-Chung, et al.. Microplastics in different water samples (seawater, freshwater, and wastewater): Methodology approach for characterization using micro-FTIR spectroscopy. Water Research, 2023, 232, pp.119711. ⟨10.1016/j.watres.2023.119711⟩. ⟨hal-04055825⟩
J. Yang, M. Monnot, Y. Sun, L. Asia, P. Wong-Wah-Chung, et al.. Microplastics in different water samples (seawater, freshwater, and wastewater): Removal efficiency of membrane treatment processes. Water Research, 2023, 232, pp.119673. ⟨10.1016/j.watres.2023.119673⟩. ⟨hal-03989908⟩ Plus de détails...
The distribution and fate of microplastics in different water sources and their treatment plants (seawater, three municipal wastewaters, a pharmaceutical factory wastewater, and three drinking waters) in France were studied. Currently, research in this field is still under exploration since almost no relevant standards or policies have been introduced for the detection, the removal, or the discharge of microplastics. This study used an improved quantitative and qualitative analytical methodology for microplastic detection by μ-FTIR carried out with siMPle analytical software. By investigation, wastewater was determined to contain the most abundant microplastics in quantity (4,203-42,000 MP·L-1), then followed by surface water/groundwater (153-19,836 MP·L-1) and seawater (around 420 MP·L-1). Polyethylene was the dominant material in almost all water types followed by polypropylene, polystyrene, and polyethylene terephthalate. Almost all treatment technologies could remove microplastics whatever the feed water types and concentration of microplastics, though some treatment processes or transport pipes could cause additional contamination from microplastics. The four WWTPs, three DWTPs, and SWTP in France provided, respectively, 87.8-99.8%, 82.3-99.9%, 69.0-96.0% removal/retention of MPs in quantity, and provided 97.3-100%, 91.9-99.9%, 92.2-98.1% removal/retention of MPs in surface area. Moreover, ultrafiltration was confirmed to be an effective technology for microplastic retention and control of dimensions of microplastics in smaller ranges both in field-scale and lab-scale experiments. The 200 kDa ultrafiltration membrane could retain 70-100% and 80-100% of microplastics in quantity and in surface area, respectively.
J. Yang, M. Monnot, Y. Sun, L. Asia, P. Wong-Wah-Chung, et al.. Microplastics in different water samples (seawater, freshwater, and wastewater): Removal efficiency of membrane treatment processes. Water Research, 2023, 232, pp.119673. ⟨10.1016/j.watres.2023.119673⟩. ⟨hal-03989908⟩
H. Klinklin, Sabrina Marcelin, Benoît Ter-Ovanessian, M. Monnot, Bernard Normand. Potential of a Thin-Film Cell for assessing the Sensitivity of Nickel-Base Alloys to Crevice Corrosion. Journal of The Electrochemical Society, 2023, 170, ⟨10.1149/1945-7111/acecaa⟩. ⟨hal-04546862⟩ Plus de détails...
Nickel-base alloy 825 is prone to crevice corrosion in seawater. A modified and updated thin-layer cell was used to mimic crevice corrosion, and a new approach to monitor the evolution of the material behavior was developed. The corrosion potential, polarization resistance, and electrolyte resistance were demonstrated to be good indicators to follow the different stages of the crevice-corrosion process. The results were discussed in regard with the cathodic process kinetic. The different tested conditions justify the interest of the methodology developed for this set-up.
H. Klinklin, Sabrina Marcelin, Benoît Ter-Ovanessian, M. Monnot, Bernard Normand. Potential of a Thin-Film Cell for assessing the Sensitivity of Nickel-Base Alloys to Crevice Corrosion. Journal of The Electrochemical Society, 2023, 170, ⟨10.1149/1945-7111/acecaa⟩. ⟨hal-04546862⟩
J. Yang, A. Mouilleron, Mathias Monnot, Cordier Clémence, Philippe 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-04543477⟩ Plus de détails...
Sturgeon farming requires special attention. In addition to a relatively long rearing, climate change has resulted in increasingly high temperatures favorable to the emergence of pathogens. The control of water quality is essential especially the first years of life of the fish to prevent a mimivirus (AcIV-E) and a mycobacterium (Mycobacterium liflandii). These crises can lead to significant mortality (up to 70%) and have only been documented in hatchery populations where mortality can reach as high as 100 %. Mycobacterium liflandii, fatally affects young generations of Siberian sturgeon (Acipenser baerii) mainly in year N + 1 with mortalities reaching 30 % when river temperatures rise above 21 °C (summer period). The retention of these pathogenic microorganisms and of total flora by ultrafiltration was evaluated at a semi-industrial scale. The first part focuses on the specific removal of mimivirus, total flora and mycobacteria and the second part aims to evaluate over the long term (5 months) the hydraulic performances of the ultrafiltration process. Although the temperature (maximum 21 °C) was not sufficient for the mycobacteria to be detected, a good retention of mimiviruses (up to 4.7 log removal) and total flora was observed throughout the study. A more stable water quality was obtained after ultrafiltration and this work confirms the potential great interest of ultrafiltration for the biosecurity of fish production.
J. Yang, A. Mouilleron, Mathias Monnot, Cordier Clémence, Philippe 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-04543477⟩
H. Klinklin, Sabrina Marcelin, Benoît Ter-Ovanessian, M. Monnot, Bernard Normand. Potential of a Thin-Film Cell for assessing the Sensitivity of Nickel-Base Alloys to Crevice Corrosion. Journal of The Electrochemical Society, 2023, 170, ⟨10.1149/1945-7111/acecaa⟩. ⟨hal-04194575⟩ Plus de détails...
H. Klinklin, Sabrina Marcelin, Benoît Ter-Ovanessian, M. Monnot, Bernard Normand. Potential of a Thin-Film Cell for assessing the Sensitivity of Nickel-Base Alloys to Crevice Corrosion. Journal of The Electrochemical Society, 2023, 170, ⟨10.1149/1945-7111/acecaa⟩. ⟨hal-04194575⟩
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⟩
N. Dietrich, Gaëlle Lebrun, Kalyani Kentheswaran, Mathias Monnot, Patrick Loulergue, et al.. Rebalancing the historical female under-representation in education. Journal of Chemical Education, 2022, 99 (6), pp.2298-2309. ⟨10.1021/acs.jchemed.1c01218⟩. ⟨hal-03666841⟩ Plus de détails...
Women are increasingly present in the field of engineering, and despite a significant female presence, it has been found that the programmes continue to make no reference to women scientists. In chemical engineering, for example, all the names of scientists mentioned in the programmes belong to men only. To test this hypothesis of the overrepresentation of men in the programmes, a series of random opinion surveys were launched among 600 students from 5 universities to find out whether they had noticed this over-representation and what they thought about it. The results showed that the vast majority did not realize that the scientists presented as examples in classes were all men. In fact, 90% of the student panel were unable to identify a woman in the chemical engineering field, and the remaining 10% could cite only one or two-who were among the most recent and had received most attention from the media. The issue of inequalities between girls and boys and between women and men in education remains central to understanding and combating gender inequalities and to enabling people to develop as persons free from the limitations imposed on them by gender stereotypes. However, these inequalities cannot be explained exclusively by the issue of access to education but must also take the type and content of education into account. This article is a call for reflection on the content of university curricula and has a twofold objective: on the one hand, to raise awareness of this imbalance in representation among students, both male and female, and, on the other hand, to launch reflection on this "invisibility of women" and to propose some avenues for debate.
N. Dietrich, Gaëlle Lebrun, Kalyani Kentheswaran, Mathias Monnot, Patrick Loulergue, et al.. Rebalancing the historical female under-representation in education. Journal of Chemical Education, 2022, 99 (6), pp.2298-2309. ⟨10.1021/acs.jchemed.1c01218⟩. ⟨hal-03666841⟩
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⟩
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⟩
Jiaqi Yang, Mathias Monnot, Lionel Ercolei, Philippe Moulin. Impact of Chlorinated-Assisted Backwash and Air Backwash on Ultrafiltration Fouling Management for Urban Wastewater Tertiary Treatment. Membranes, 2021, 11 (10), pp.733. ⟨10.3390/membranes11100733⟩. ⟨hal-03514663⟩ Plus de détails...
To improve membrane fouling management, the NaClO-assisted backwash has been developed to improve permeability maintenance and reduce the need for intensive chemical cleanings. This study is aimed to focus on the efficiency of NaClO-assisted backwash in real UF pilot scale and with periodic classic backwash (CB) and air backwash (AB). The impacts on hydraulic filtration performance, physicochemical properties of membrane material under different addition frequencies of NaClO, and the performance of chlorinated CB and AB will be discussed. In result, 10 mg Cl2 L−1 NaClO addition in backwash water is confirmed to greatly improve the overall filtration performance and backwash cleaning efficiency. One condition stands out from the other due to better control of irreversible fouling, less NaClO consumption in 10 years prediction, sustainable and adaptable filtration performance, and less potential damage on the physicochemical properties of the membrane. Additionally, it can be inferred from this experiment that frequent contact with NaClO induced some degradation on the PES-made UF membrane surface properties. To retain the best state of UF membrane on anti-fouling and qualified production, the optimized condition with more frequent NaClO contact was not suggested for long-term filtration.
Jiaqi Yang, Mathias Monnot, Lionel Ercolei, Philippe Moulin. Impact of Chlorinated-Assisted Backwash and Air Backwash on Ultrafiltration Fouling Management for Urban Wastewater Tertiary Treatment. Membranes, 2021, 11 (10), pp.733. ⟨10.3390/membranes11100733⟩. ⟨hal-03514663⟩
J. Yang, Mathias Monnot, T. Eljaddi, L. Ercolei, L. Simonian, et al.. Ultrafiltration as tertiary treatment for municipal wastewater reuse. Separation and Purification Technology, 2021, 272, pp.118921. ⟨10.1016/j.seppur.2021.118921⟩. ⟨hal-03514681⟩ Plus de détails...
Water reuse is an enduring topic that benefits the society and future generations of mankind. Ultrafiltration (UF) is one of the most cost-effective treatment technologies for improving water quality. In this study, a semiindustrial UF pilot plant with periodical classic backwash (CB) and air backwash (AB) was operated automatically to evaluate its feasibility and sustainability for municipal wastewater reuse and find out the optimized filtration condition. This study carried out 15 filtration conditions to investigate the impacts of flux (J in L center dot h-1 center dot m- 2), filtration cycle time (t in min), and air backwash frequency (BW) on membrane hydraulic filtration performance and membrane fouling management. Through comparative analysis of all conditions in water quality, permeability variation, irreversible fouling management, and water recovery rates, the sustainable conditions J80t40BW1/3 (flux of 80 L center dot h- 1 center dot m- 2, filtration cycle time of 40 min, 1 AB followed with 3 CBs), J60t60BW1/4 (flux of 60 L center dot h- 1 center dot m- 2, filtration cycle time of 60 min, 1 AB followed with 4 CBs), and J60t60BW1/ 3 (flux of 60 L center dot h- 1 center dot m- 2, filtration cycle time of 60 min, 1 AB followed with 3 CBs), stood out from the others with higher overall performances. Additionally, air backwash showed excellent reversibility on membrane fouling control, which was around 1.25-2 times that of CB in average. After all, long term operation on condition J60t60BW1/3 in winter and in summer confirmed that the UF system could provide sustainable and adaptable filtration performance regardless of the temperature and feed water quality. The UF permeate quality is good enough to be reused in non-potable applications as it met reuse guidelines of the World Health Organization, reuse standards of France and the most recent EU regulation for agricultural irrigation. This work confirms the great interest of UF as tertiary treatment for water reuse and gives operational indications for future industrialscale production of reclaimed water.
J. Yang, Mathias Monnot, T. Eljaddi, L. Ercolei, L. Simonian, et al.. Ultrafiltration as tertiary treatment for municipal wastewater reuse. Separation and Purification Technology, 2021, 272, pp.118921. ⟨10.1016/j.seppur.2021.118921⟩. ⟨hal-03514681⟩
Mathias Monnot, S. Laborie, G. Hébrard, N. Dietrich. New approaches to adapt escape game activities to large audience in chemical engineering: Numeric supports and students’ participation. Education for Chemical Engineers, 2020, 32 (6), pp.50-58. ⟨10.1016/j.ece.2020.05.007⟩. ⟨hal-02902064⟩ Plus de détails...
Gamification is a widespread phenomenon that relies on using game mechanics in other areas, such as the learning situation. One of the most exciting types of games in the late 2010s is escape games, where the principle is for the players to manage to escape from a room in which they are locked by finding hidden items and following a sequence of puzzles. The goal of using this type of game is to motivate/involve learners, to make them work and develop adaptability and responsiveness skills. Unfortunately, these escape games are only practiced in small groups, and the design is expensive and time-consuming. That is why cost-effective alternatives are proposed in this paper. They are either dematerialized, entirely based on a digital medium (smartphone/tablets/computer), or directly created by students, also with a digital medium, allowing integration into large classes, or at open house events.
Mathias Monnot, S. Laborie, G. Hébrard, N. Dietrich. New approaches to adapt escape game activities to large audience in chemical engineering: Numeric supports and students’ participation. Education for Chemical Engineers, 2020, 32 (6), pp.50-58. ⟨10.1016/j.ece.2020.05.007⟩. ⟨hal-02902064⟩
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⟩
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, 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
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⟩
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⟩
