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149 results on '"Bourseau P."'

1. Simulation de la désactivation d'un catalyseur d'hydrodémétallisation à géométrie ouverte Simulation of the Deactivation of a Hydrodemetallization Catalyst with an Open Geometry

Author: Tanoubi I., Martinerie P., Bourseau P., Muratet G., and Toulhoat H.
Subjects: Chemical technology, TP1-1185, Energy industries. Energy policy. Fuel trade, HD9502-9502.5
Abstract: On propose un outil de simulation prédictif de la désactivation au cours du temps d'un catalyseur d'hydrodémétallisation. Il repose sur un modèle de la géométrie du catalyseur, associé à une loi de diffusion des réactifs prenant en compte l'évolution texturale du catalyseur en cours de réaction. L'évolution de la texture est due au dépôt solide d'un des produits de la réaction dans les pores catalytiques. Le dépôt catalyse également la réaction mais de manière moins efficace que le catalyseur propre. La désactivation est liée à la diminution de la surface spécifique, et au bouchage progressif des pores. La géométrie prise en compte reflète la texture originale dite en bogue de châtaigne , qui caractérise les nouveaux catalyseurs d'hydrotraitement des résidus récemment développés à l'Institut Français du Pétrole (IFP). La simulation montre que cette géométrie particulière induit une meilleure stabilité du catalyseur vis à vis des facteurs de désactivation. Le modèle envisage d'abord une cinétique simple, tenant compte uniquement de la réaction de démétallisation. Par ailleurs, il est en mesure d'introduire une réaction compétitive pour justifier les observations expérimentales en milieu contaminé par des asphaltènes, à savoir l'occurrence des concentrations maximales en dépôt solide à l'intérieur des grains de catalyseurs, et non à leur périphérie immédiate. La simulation prédit l'évolution au cours du temps des profils le long du grain, de la surface spécifique, de la fraction de vide, de la concentration en réactif dans les pores, et de la masse de métaux déposés. Elle détermine également à chaque instant le flux du réactif à la surface du grain, ainsi que le facteur de Tamm et le taux de captation en métaux. Le modèle rend compte de manière satisfaisante des principales observations expérimentales, et constitue en outre un outil qualitatif très utile pour le développement rationnel de nouveaux catalyseurs industriels. A predictive simulation method is proposed for the deactivation of a hydrodemetallization catalyst in time. It is based on a model of the geometry of the catalyst associated with a diffusion law of the reactants, with consideration being given to the textural evolution of the catalyst during the reaction. Textural evolution is due to the solid deposition of reaction products in the catalytic pores. The deposit also catalyzes the reaction, but much less effectively than the catalyst fresh. Deactivation is linked to the decrease in the specific surface area and to the progressive plugging up of the pores. The geometry taken into consideration reflects the original socalled chestnut-burrtexture characterizing new catalysts developed by Institut Français du Pétrole (IFP) for the hydrotreatment of residues. Simulation shows that this specific geometry brings about better catalyst stability in relation to deactivation factors. The model first considers a simple kinetics involving solely the demetallization reaction. Likewise, it is capable of introducing a competitive reaction to justify experimental observations in an environment contaminated by asphaltenes, i. e. the occurrence of maximum concentrations of a solid deposit inside the catalyst grains and not on their immediate periphery. The simulation predicts the evolution in time of the profiles along the grain, the specific surface area, the void fraction, the reactant concentration in the pores and the mass of metals deposited. It also determines at all times the reactant flux on the surface of the grain as well as the Tamm factor and the metal capture rate. The model gives a satisfactory account of the leading experimental observations and also provides a very useful qualitative tool for the rational development of new industrial catalysts.
Published: 2006
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2. Evolution au cours du temps d'un grain de catalyseur d'hydrodémétallisation : module et simulation numérique de résultats expérimentaux Evolution in Time of a Hydrodemetallization Catalyst Pellet: Modeling and Numerical Simulation of Experimental Results

Author: Bourseau P., Muratet G., Saillour C., and Toulhoat H.
Subjects: Chemical technology, TP1-1185, Energy industries. Energy policy. Fuel trade, HD9502-9502.5
Abstract: On propose un modèle de désactivation lente d'un catalyseur de répartition poreuse bimodale par dépôt solide d'un des produits de réaction dans les pores. Le dépôt solide catalyse également la réaction, la désactivation s'effectuant par diminution de la surface spécifique et bouchage progressif des pores. Le modèle prend en compte les limitations diffusionnelles existant à l'intérieur du grain de catalyseur. Ce modèle utilise une représentation géométrique particulière des pores, et une loi de diffusion tenant compte de la variation des paramètres texturaux au cours du temps. Il suppose la connaissance expérimentale de la surface spécifique totale et de la distribution du volume poreux en fonction du diamètre des pores. Ce modèle a permis de retrouver avec un très bon accord quantitatif la courbe de captation des métaux (Ni + V) en fonction du temps de fonctionnement obtenue expérimentalement pour un catalyseur d'hydrodémétallisation (HDM) sur un pétrole brut de Boscan désasphalté. Il permet en outre de prédire la durée de vie et le taux d'occupation final du volume poreux d'un catalyseur d'HDM modèle. A model is proposed for the slow deactivation of a catalyst with a bimodal pore distribution by a solid deposit of one of the reaction products inside the pores. The solid deposit is by itself a catalyst for the reaction, with deactivation resulting from the progressive decrease of specific area and blockage of the pores. The model takes Intragranular diffusional limitations into account. This model uses an original geometric representation of the pores together with a diffusion law incorporating the variation of textural parameters in time. It requires the experimental determination of the total specific area and of pore volume distribution as a function of pore diameter. Numerical simulations with this model provided a very good quantitative fit with the capture curve for metals (Ni + V) as a function of operating time determined experimentally for a hydrodemetallization (HDM) catalyst with a deasphalted Boscan crude oil. This model is able to forecast the lifetime and end storage-capacity for the pore volume of a model HDM catalyst.
Published: 2006
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3. Mechanical cell disruption of Parachlorella kessleri microalgae: Impact on lipid fraction composition

Author: Clavijo Rivera, E., Montalescot, V., Viau, M., Drouin, D., Bourseau, P., Frappart, M., Monteux, C., and Couallier, E.
Published: 2018
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4. Optimization of bead milling parameters for the cell disruption of microalgae: Process modeling and application to Porphyridium cruentum and Nannochloropsis oculata

Author: Montalescot, V., Rinaldi, T., Touchard, R., Jubeau, S., Frappart, M., Jaouen, P., Bourseau, P., and Marchal, L.
Published: 2015
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5. Recovery of aroma compounds from seafood cooking juices by membrane processes

Author: Bourseau, P., Massé, A., Cros, S., Vandanjon, L., and Jaouen, P.
Published: 2014
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6. The culture of Chlorella vulgaris in a recycled supernatant: Effects on biomass production and medium quality

Author: Hadj-Romdhane, F., Zheng, X., Jaouen, P., Pruvost, J., Grizeau, D., Croué, J.P., and Bourseau, P.
Published: 2013
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7. Development and validation of a minimal growth medium for recycling Chlorella vulgaris culture

Author: Hadj-Romdhane, F., Jaouen, P., Pruvost, J., Grizeau, D., Van Vooren, G., and Bourseau, P.
Published: 2012
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8. List of Contributors

Author: Abbas, B., primary, Abreu, A., additional, Adams, R., additional, Adolfsson-Erici, M., additional, Afonso, A., additional, Afonso-Olivares, C., additional, Agirbas, E., additional, Aguiló, J.M., additional, Airoldi, L., additional, Aksoy, H., additional, Albentosa, M., additional, Alcaro, L., additional, Aliani, S., additional, Al-Maslamani, I., additional, Alomar, C., additional, Altin, D., additional, Álvarez, E., additional, Amaral-Zettler, L.A., additional, Amato, E., additional, Anderson, A., additional, Andrady, A.L., additional, Andrius, G., additional, Angel, D., additional, Ariese, F., additional, Arp, H.P., additional, Asensio, M., additional, Assidqi, K., additional, Avio, C.G., additional, Aytan, U., additional, Bahri, T., additional, Baini, M., additional, Bakir, A., additional, Ball, H., additional, Baranyi, C., additional, Barboza, L.G.A., additional, Barg, U., additional, Bargelloni, L., additional, Barras, H., additional, Barrera, C., additional, Barria, P., additional, Barrows, A., additional, Barth, A., additional, Batel, A., additional, Baztan, J., additional, Baztan, P., additional, Beiras, R., additional, Benedetti, M., additional, Berber, A.A., additional, Berber, N., additional, Bergmann, M., additional, Berlino, M., additional, Berrow, S., additional, Bessa, F., additional, Besseling, E., additional, Beyer, B., additional, Binaglia, M., additional, Bizjak, T., additional, Bjorndal, K.A., additional, Blust, R., additional, Boertien, M., additional, Bolten, A.B., additional, Booth, A.M., additional, Bounoua, B., additional, Bourseau, P., additional, Brahimi, N., additional, Bramini, M., additional, Brennholt, N., additional, Breuninger, E., additional, Bried, J., additional, Broderick, A., additional, Broglio, E., additional, Browne, M.A., additional, Bruzaud, S., additional, Buceta, J., additional, Buchinger, S., additional, Budimir, S., additional, Budzin-ski, H., additional, Butter, E., additional, Cachot, J., additional, Caetano, M., additional, Callaghan, A., additional, Camedda, A., additional, Capella, S., additional, Cardelli, L., additional, Carpentieri, S., additional, Carrasco, A., additional, Carriço, R., additional, Caruso, A., additional, Cassone, A.-L., additional, Castillo, A., additional, Castro, R.O., additional, Catarino, A.I., additional, Cazenave, P.W., additional, Çelik, İ., additional, Cerralbo, P., additional, César, G., additional, Chouinard, O., additional, Chubarenko, I., additional, Chubarenko, I.P., additional, Cicero, A.M., additional, Clarindo, G., additional, Clarke, B., additional, Clérandeau, C., additional, Clüsener-Godt, M., additional, Codina-García, M., additional, Cole, M., additional, Collard, F., additional, Collignon, A., additional, Collins, T., additional, Compa, M., additional, Conan, P., additional, Constant, M., additional, Cordier, M., additional, Courtene-Jones, W., additional, Cousin, X., additional, Covelo, P., additional, Cózar, A., additional, Crichton, E., additional, Crispi, O., additional, Cronin, M., additional, Croot, P.L., additional, Cruz, M.J., additional, d’Errico, G., additional, Dâmaso, C., additional, Das, K., additional, de Alencastro, L.F., additional, de Araujo, F.V., additional, de Boer, J.F., additional, de Lucia, G.A., additional, Debeljak, P., additional, Dehaut, A., additional, Deudero, S., additional, Devrieses, L., additional, Di Vito, S., additional, Díaz, A., additional, Donohue, J., additional, Doumenq, P., additional, Doyle, T.K., additional, Dris, R., additional, Druon, J.-N., additional, Duarte, C.M., additional, Duflos, G., additional, Dumontier, M., additional, Duncan, E., additional, Dussud, C., additional, Eckerlebe, A., additional, Egelkraut-Holtus, M., additional, Eidsvoll, D.P., additional, Ek, C., additional, Elena, S., additional, Elineau, A., additional, Enevoldsen, H., additional, Eppe, G., additional, Eriksen, M., additional, Ernsteins, R., additional, Espino, M., additional, Estévez-Calvar, N., additional, Ewins, C., additional, Fabre, P., additional, Faimali, M., additional, Fattorini, D., additional, Faure, F., additional, Ferrando, S., additional, Ferreira, J.C., additional, Ferreira-da-Costa, M., additional, Fileman, E., additional, Fischer, M., additional, Fortunato, A.B., additional, Fossi, M.C., additional, Foulon, V., additional, Frank, A., additional, Frenzel, M., additional, Frère, L., additional, Frias, J.P.G.L., additional, Frick, H., additional, Froneman, P.W., additional, Gabet, V.M., additional, Gabrielsen, G.W., additional, Gago, J., additional, Gajst, T., additional, Galgani, F., additional, Gallinari, M., additional, Galloway, T.S., additional, Gamarro, E.G., additional, Gambardella, C., additional, Garaventa, F., additional, Garcia, S., additional, Garrabou, J., additional, Garrido, P., additional, Gary, S.F., additional, Gasperi, J., additional, Gaze, W., additional, Geertz, T., additional, Gelado-Caballero, M.D., additional, George, M., additional, Gercken, J., additional, Gerdts, G., additional, Ghiglione, J.-F., additional, Gies, E., additional, Gilbert, B., additional, Giménez, L., additional, Glassom, D., additional, Glockzin, M., additional, Godley, B., additional, Goede, K., additional, Goksøyr, A., additional, Gómez, M., additional, Gómez-Parra, A., additional, González-Marco, D., additional, González-Solís, J., additional, Gorbi, S., additional, Gorokhova, E., additional, Gorsky, G., additional, Gosch, M., additional, Grose, J., additional, Guebitz, G.M., additional, Guedes-Alonso, R., additional, Guijarro, B., additional, Guilhermino, L., additional, Gundry, T., additional, Gutow, L., additional, Haave, M., additional, Haeckel, M., additional, Haernvall, K., additional, Hajbane, S., additional, Hamann, M., additional, Hämer, J., additional, Hamm, T., additional, Hansen, B.H., additional, Hardesty, B.D., additional, Harth, B., additional, Hartikainen, S., additional, Hassellöv, M., additional, Hatzky, S., additional, Healy, M.G., additional, Hégaret, H., additional, Henry, T.B., additional, Hermabessiere, L., additional, Hernández-Brito, J.J., additional, Hernandez-Gonzalez, A., additional, Hernandez-Milian, G., additional, Hernd, G., additional, Herrera, A., additional, Herring, C., additional, Herzke, D., additional, Heussner, S., additional, Hidalgo-Ruz, V., additional, Himber, C., additional, Holland, M., additional, Hong, N.-H., additional, Horton, A.A., additional, Horvat, P., additional, Huck, T., additional, Huhn, M., additional, Huvet, A., additional, Iglesias, M., additional, Igor, C., additional, Isachenko, I.A., additional, Ivar do Sul, J-A., additional, Jahnke, A., additional, Janis, B., additional, Janis, K., additional, Janis, U., additional, Jemec, A., additional, Jiménez, J.C., additional, Johnsen, H., additional, Jorgensen, B., additional, Jørgensen, J.H., additional, Jörundsdóttir, H., additional, Jung, Y.-J., additional, Kedzierski, M., additional, Keiter, S., additional, Kershaw, P., additional, Kerhervé, P., additional, Kesy, K., additional, Khan, F., additional, Khatmullina, L.I., additional, Kirby, J., additional, Kiriakoulakis, K., additional, Klein, R., additional, Klunderud, T., additional, Knudsen, C.M.H., additional, Knudsen, T.B., additional, Kochleus, C., additional, Koelmans, A.A., additional, Kögel, T., additional, Koistinen, A., additional, Kopke, K., additional, Korez, Š., additional, Kowalski, N., additional, Kreikemeyer, B., additional, Kroon, F., additional, Krumpen, T., additional, Krzan, A., additional, Kržan, A., additional, Labrenz, M., additional, Lacroix, C., additional, Ladirat, L., additional, Laforsch, C., additional, Lagarde, F., additional, Lahive, E., additional, Lambert, C., additional, Lapucci, C., additional, Lattin, G., additional, Law, K.L., additional, Le Roux, F., additional, Le Souef, K., additional, Le Tilly, V., additional, Lebreton, L., additional, Leemans, E., additional, Lehtiniemi, M., additional, Lenz, M., additional, Leskinen, J., additional, Leslie, H., additional, Leslie, H.A., additional, Levasseur, C., additional, Lewis, C., additional, Licandro, P., additional, Lind, K., additional, Lindeque, P., additional, Lindeque, P.K., additional, Lips, I., additional, Liria, A., additional, Liria-Loza, A., additional, Llinás, O., additional, Loiselle, S.A., additional, Long, M., additional, Lorenz, C., additional, Lorenzo, S.M., additional, Loubar, K., additional, Luna-Jorquera, G., additional, Lusher, A.L., additional, Macchia, V., additional, MacGabban, S., additional, Mackay, K., additional, MacLeod, M., additional, Maes, T., additional, Magaletti, E., additional, Maggiore, A., additional, Magnusson, K., additional, Mahon, A.M., additional, Makorič, P., additional, Mallow, O., additional, Marques, J., additional, Marsili, L., additional, Martí, E., additional, Martignac, M., additional, Martin, J., additional, Martínez, I., additional, Martínez, J., additional, Martinez-Gil, M., additional, Martins, H.R., additional, Matiddi, M., additional, Maximenko, N., additional, Mazlum, R., additional, Mcadam, R., additional, Mcknight, L., additional, McNeal, A.W., additional, Measures, J., additional, Mederos, M.S., additional, Mendoza, J., additional, Meyer, M.S., additional, Miguelez, A., additional, Milan, M., additional, Militão, T., additional, Miller, R.Z., additional, Mino-Vercellio-Verollet, M., additional, Mir, G., additional, Miranda-Urbina, D., additional, Misurale, F., additional, Montesdeoca-Esponda, S., additional, Mora, J., additional, Morgana, S., additional, Moriceau, B., additional, Morin, B., additional, Morley, A., additional, Morrison, L., additional, Murphy, F., additional, Naidoo, T., additional, Näkki, P., additional, Napper, I.E., additional, Narayanaswamy, B.E., additional, Nash, R., additional, Negri, A., additional, Nel, H.A., additional, Nerheim, M.S., additional, Nerland, I.L., additional, Neto, J., additional, Neves, V., additional, Nies, H., additional, Noel, M., additional, Nor, N.H.M., additional, Noren, F., additional, O’ Connell, B., additional, O’ Connor, I., additional, Obbard, J.P., additional, Oberbeckmann, S., additional, Obispo, R., additional, Officer, R., additional, Ogonowski, M., additional, Orbea, A., additional, Ortlieb, M., additional, Osborn, A.M., additional, Ostiategui-Francia, P., additional, Packard, T., additional, Pahl, S., additional, Palatinus, A., additional, Palmqvist, A., additional, Pannetier, P., additional, Panti, C., additional, Parmentier, E., additional, Pasanen, P., additional, Patarnello, T., additional, Pattiaratchi, C., additional, Pauletto, M., additional, Paulus, M., additional, Pavlekovsky, K., additional, Pedersen, H.B., additional, Pedrotti, M.-L., additional, Peeken, I., additional, Peeters, D., additional, Peeters, E., additional, Pellegrini, D., additional, Perales, J.A., additional, Perez, E., additional, Perz, V., additional, Petit, S., additional, Pflieger, M., additional, Pham, C.K., additional, Piazza, V., additional, Pinto, M., additional, Planells, O., additional, Plaza, M., additional, Pompini, O., additional, Potthoff, A., additional, Prades, L., additional, Primpke, S., additional, Proietti, M., additional, Proskurowski, G., additional, Puig, C., additional, Pujo-Pay, M., additional, Pullerits, K., additional, Queirós, A.M., additional, Quinn, B., additional, Raimonds, E., additional, Ramis-Pujol, J., additional, Rascher-Friesenhausen, R., additional, Reardon, E., additional, Regoli, F., additional, Reichardt, A.M., additional, Reifferscheid, G., additional, Reilly, K., additional, Reisser, J., additional, Riba, I., additional, Ribitsch, D., additional, Rinnert, E., additional, Rios, N., additional, Rist, S.E., additional, Rivadeneira, M.M., additional, Rivière, G., additional, Robbens, J., additional, Robertson, C.J.R., additional, Rocher, V., additional, Rochman, C.M., additional, Rodrigues, M., additional, Rodriguez, Y., additional, Rodríguez, A., additional, Rodríguez, G., additional, Rodríguez, J.R.B., additional, Rodríguez, S., additional, Rodríguez, Y., additional, Rogan, E., additional, Rojo-Nieto, E., additional, Romeo, T., additional, Ross, P.S., additional, Roveta, A., additional, Rowland, S.J., additional, Ruckstuhl, N.A., additional, Ruiz-Fernández, A-C., additional, Ruiz-Orejón, L.F., additional, Runge, J., additional, Russell, M., additional, Saavedra, C., additional, Saborowski, R., additional, Sahin, B.E., additional, Sailley, S., additional, Sakaguchi-Söder, K., additional, Salaverria, I., additional, Sánchez-Arcilla, A., additional, Sánchez-Nieva, J., additional, Sanderson, W., additional, Santana-Rodríguez, J.J., additional, Santana-Viera, S., additional, Santos, M.B., additional, Santos, M.R., additional, Sanz, M.R., additional, Sardá, R., additional, Savelli, H., additional, Schoeneich-Argent, R., additional, Scholz-Böttcher, B.M., additional, Sciacca, F., additional, Scofield, R.P., additional, Setälä, O., additional, Selenius, M., additional, Sempere, R., additional, Senturk, Y., additional, Shashoua, Y., additional, Sherman, P., additional, Sick, C., additional, Siegel, D., additional, Sierra, J.P., additional, Silva, F., additional, Silvestri, C., additional, Sintija, G., additional, Sire, O., additional, Slat, B., additional, Smit, A., additional, Sobral, P., additional, Sorvari, J., additional, Sosa-Ferrera, Z., additional, Sotillo, M.G., additional, Soudant, P., additional, Speidel, L., additional, Spurgeon, D.J., additional, Steer, M.K., additional, Steindal, C.C., additional, Stifanese, R., additional, Štindlová, A., additional, Stuurman, L., additional, Suaria, G., additional, Suazo, C.G., additional, Sureda, A., additional, Surette, C., additional, Svendsen, C., additional, Syberg, K., additional, Tairova, Z., additional, Talvitie, J., additional, Tassin, B., additional, Tazerout, M., additional, Tekman, M.B., additional, ter Halle, A., additional, Thiel, M., additional, Thomas, K.V., additional, Thompson, R.C., additional, Tinkara, T., additional, Tirelli, V., additional, Tomassetti, P., additional, Toorman, E., additional, Toppe, J., additional, Tornambè, A., additional, Torres, R., additional, Torres-Padrón, M.E., additional, Underwood, A.J., additional, Urbina, M., additional, Usategui-Martín, A., additional, Usta, R., additional, Valdés, L., additional, Valente, A., additional, Valentina, T., additional, van Arkel, K., additional, Van Colen, C., additional, Van Der Hal, N., additional, van Franeker, J.A., additional, Van Herwerden, L., additional, Van Loosdrecht, M., additional, van Oyen, A., additional, Vandeperre, F., additional, Vanderlinden, J-P., additional, Vani, D., additional, Vasconcelos, L., additional, Vega-Moreno, D., additional, Ventero, A., additional, Vethaak, A.D., additional, Vianello, A., additional, Vicioso, M., additional, Vieira, L.R., additional, Viršek, M.K., additional, Vos, M., additional, Wahl, M., additional, Wallace, N., additional, Walton, A., additional, Waniek, J.J., additional, Watts, A., additional, Webster, L., additional, Wesch, C., additional, Whitfield, E., additional, Wichels, A., additional, Wieczorek, A.M., additional, Wilcox, C., additional, Williams, R.J., additional, Wong-Wah-Chung, P., additional, Wright, S., additional, Wyles, K.J., additional, Young, R., additional, Yurtsever, M., additional, Yurtsever, U., additional, Zada, L., additional, Zamani, N.P., additional, and Zampetti, G., additional
Published: 2017
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9. New Approaches for the Extraction and Identification of Microplastics From Marine Sediment

Author: Kedzierski, M., primary, Le Tilly, V., additional, Bourseau, P., additional, César, G., additional, Sire, O., additional, and Bruzaud, S., additional
Published: 2017
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10. Unsteady transport of divalent salt through a mineral membrane of ultrafiltration: Numerical estimation of physical parameters

Author: Dutournié, P., Limousy, L., Déon, S., and Bourseau, P.
Published: 2011
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11. Surface properties of ceramic ultrafiltration TiO 2 membranes: Effects of surface equilibriums on salt retention

Author: Chevereau, E., Zouaoui, N., Limousy, L., Dutournié, P., Déon, S., and Bourseau, P.
Published: 2010
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12. Transport of salt mixtures through nanofiltration membranes: Numerical identification of electric and dielectric contributions

Author: Déon, S., Dutournié, P., Limousy, L., and Bourseau, P.
Published: 2009
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13. Performances of ultrafiltration membranes for fractionating a fish protein hydrolysate: Application to the refining of bioactive peptidic fractions

Author: Chabeaud, A., Vandanjon, L., Bourseau, P., Jaouen, P., Chaplain-Derouiniot, M., and Guerard, F.
Published: 2009
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14. Fractionating white fish fillet hydrolysates by ultrafiltration and nanofiltration

Author: Vandanjon, L., Grignon, M., Courois, E., Bourseau, P., and Jaouen, P.
Published: 2009
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15. Fractionation of fish protein hydrolysates by ultrafiltration and nanofiltration: impact on peptidic populations

Author: Bourseau, P., Vandanjon, L., Jaouen, P., Chaplain-Derouiniot, M., Massé, A., Guérard, F., Chabeaud, A., Fouchereau-Péron, M., Le Gal, Y., Ravallec-Plé, R., Bergé, J.-P., Picot, L., Piot, J.-M., Batista, I., Thorkelsson, G., Delannoy, C., Jakobsen, G., and Johansson, I.
Published: 2009
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16. Application of Response Surface Methodology to Optimise the Antioxidant Activity of a Saithe (Pollachius virens) Hydrolysate

Author: Chabeaud, A., Dutournié, P., Guérard, F., Vandanjon, L., and Bourseau, P.
Published: 2009
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17. mRNA-based cancer vaccine: prevention of B16 melanoma progression and metastasis by systemic injection of MART1 mRNA histidylated lipopolyplexes

Author: Mockey, M, Bourseau, E, Chandrashekhar, V, Chaudhuri, A, Lafosse, S, Le Cam, E, Quesniaux, V F J, Ryffel, B, Pichon, C, and Midoux, P
Published: 2007
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18. Technical and economical evaluation of an integrated membrane process capable both to produce an aroma concentrate and to reject clean water from shrimp cooking juices

Author: Cros, S., Lignot, B., Jaouen, P., and Bourseau, P.
Published: 2006
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19. Modelling of flow in a wiped film evaporator

Author: Zeboudj, S., Belhaneche-Bensemra, N., Belabbes, R., and Bourseau, P.
Published: 2006
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20. Mild processing techniques and development of functional marine protein and peptide ingredients

Author: Thorkelsson, G., primary, Sigurgisladottir, S., additional, Geirsdottir, M., additional, Jóhannsson, R., additional, Guérard, F., additional, Chabeaud, A., additional, Bourseau, P., additional, Vandanjon, L., additional, Jaouen, P., additional, Chaplain-Derouiniot, M., additional, Fouchereau-Peron, M., additional, Martinez-Alvarez, O., additional, Le Gal, Y., additional, Ravallec-Plé, R., additional, Picot, L., additional, Berge, J.P., additional, Delannoy, C., additional, Jakobsen, G., additional, Johansson, I., additional, Batista, I., additional, and Pires, C., additional
Published: 2008
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21. Contributor contact details

Author: Børresen, Torger, primary, Brunsø, K., additional, Hansen, K.B., additional, Scholderer, J., additional, Honkanen, P., additional, Olsen, S.O., additional, Verbeke, W., additional, Martinsdóttir, E., additional, Sveinsdóttir, K., additional, Green-Petersen, D., additional, Hyldig, G., additional, Schelvis, R., additional, Pieniak, Z., additional, Toften, K., additional, Calvo Dopico, D., additional, Tudoran, A., additional, Kole, A., additional, Schaafsma, Gertjan, additional, Lund, E., additional, Kampman, E., additional, Thorsdottir, Inga, additional, Ramel, Alfons, additional, Brouwer, Ingeborg A., additional, Doré, Bill, additional, Bosch, A., additional, Pintó, R.M., additional, Lees, D., additional, von Bonsdorff, C.-H., additional, Croci, L., additional, De Medici, D., additional, Le Guyader, F.S., additional, Pommepuy, M., additional, Le Saux, J.C., additional, Kershaw, S., additional, Lowther, J.A., additional, Morgan, O.C., additional, Romalde, J.L., additional, Vilariño, M.L., additional, Furones, D., additional, Roque, A., additional, Guilfoyle, F., additional, Doré, B., additional, Lee, R.J., additional, Rangdale, R.E., additional, Hervio-Heath, D., additional, Lozach, S., additional, Dalgaard, P., additional, Emborg, J., additional, Kjølby, A., additional, Sorensen, N.D., additional, Ballin, N.Z., additional, Luten, J.B., additional, Careche, M., additional, Saura-Calixto, F., additional, Díaz-Rubio, M.E., additional, Borderías, A.J., additional, Sánchez-Alonso, I., additional, Sánchez-González, I., additional, Schram, E., additional, Scholten, O.E., additional, Toonen, M.A.J., additional, Carmona, P., additional, Gormley, T.R., additional, Oehlenschläger, J., additional, Mierke-Klemeyer, S., additional, Elvevoll, E., additional, Leonor Nunes, M., additional, Bandarra, N., additional, Stoknes, I., additional, Larsen, E.H., additional, Thorkelsson, G., additional, Sigurgisladottir, S., additional, Jóhannsson, R., additional, Geirsdottir, M., additional, Guérard, F., additional, Chabeaud, A., additional, Bourseau, P., additional, Vandanjon, L., additional, Jaouen, P., additional, Chaplain-Derouiniot, M., additional, Fouchereau-Peron, M., additional, Martinez-Alvarez, O., additional, Le Gal, Y., additional, Ravallec-Plé, R., additional, Picot, L., additional, Berge, J.P., additional, Delannoy, C., additional, Jakobsen, G., additional, Johansson, I., additional, Batista, I., additional, Pires, C., additional, Leroi, F., additional, Joffraud, J.J., additional, Skjerdal, T., additional, Lorentzen, G., additional, Bjørkevoll, I., additional, Olsen, R.L., additional, Pilet, M.F., additional, Prévost, H., additional, Dousset, X., additional, Matamoros, S., additional, Amarita, F., additional, Arboleya, J.C., additional, Cruz, Z., additional, Izurieta, E., additional, Lasagabaster, A., additional, Martínez de Marañón, I., additional, Miranda, I., additional, Nuin, M., additional, Olabarrieta, I., additional, Lauzon, H.L., additional, Jacobsen, C., additional, Undeland, I., additional, Storrø, I., additional, Rustad, T., additional, Hedges, N., additional, Medina, I., additional, Damsgård, Børge, additional, Johnston, Ian A., additional, Larsen, Erling P., additional, Storøy, J., additional, Senneset, Gunnar, additional, Forås, Eskil, additional, Olsen, Petter, additional, Karlsen, Kine Mari, additional, Frederiksen, Marco, additional, Pérez-Villarreal, B., additional, Amárita, F., additional, Bald, C., additional, Pardo, M.A., additional, and Sagardia, I., additional
Published: 2008
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22. Desalination of mussel cooking juices by electrodialysis: effect on the aroma profile

Author: Cros, S., Lignot, B., Bourseau, P., Jaouen, P., and Prost, C.
Published: 2005
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23. Reverse osmosis for the production of aromatic concentrates from mussel cooking juices: a technical assessment

Author: Cros, S., Lignot, B., Bourseau, P., and Jaouen, P.
Published: 2005
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24. Comparaison entre la filtration tangentielle et la filtration dynamique pour la séparation des biomolécules issues des microalgues

Author: Couallier, Estelle, Liu, S., Rivera, E, Lopez, L, Bourseau, P., Frappart, M., Bioprocédés Appliqués aux Microalgues (GEPEA-BAM), Laboratoire de génie des procédés - environnement - agroalimentaire (GEPEA), Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS)-Ecole Polytechnique de l'Université de Nantes (EPUN), Université de Nantes (UN)-Université de Nantes (UN)-Institut Universitaire de Technologie - Nantes (IUT Nantes), Université de Nantes (UN)-Institut Universitaire de Technologie Saint-Nazaire (IUT Saint-Nazaire), Université de Nantes (UN)-Institut Universitaire de Technologie - La Roche-sur-Yon (IUT La Roche-sur-Yon), Université de Nantes (UN)-Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Université Bretagne Loire (UBL)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Université Bretagne Loire (UBL), Centre National de la Recherche Scientifique (CNRS), Agence de l'Environnement et de la Maîtrise de l'Energie (ADEME), Consejo Nacional de Ciencia y Tecnología [Mexico] (CONACYT), Université de Bretagne Sud (UBS), Institut Universitaire de Technologie Saint-Nazaire (IUT Saint-Nazaire), and Université de Nantes (UN)
Subjects: [SDV.BIO]Life Sciences [q-bio]/Biotechnology, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS
Abstract: National audience
Published: 2019

25. Separation of TAGs from Parachlorella kessleri in wet processing: effect of cell destruction on the performance of the membrane fractionation process

Author: Liu, S., Lavenant, L, Bourseau, P., Frappart, M., Couallier, Estelle, Agence de l'Environnement et de la Maîtrise de l'Energie (ADEME), Bioprocédés Appliqués aux Microalgues (GEPEA-BAM), Laboratoire de génie des procédés - environnement - agroalimentaire (GEPEA), Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS)-Ecole Polytechnique de l'Université de Nantes (EPUN), Université de Nantes (UN)-Université de Nantes (UN)-Institut Universitaire de Technologie - Nantes (IUT Nantes), Université de Nantes (UN)-Institut Universitaire de Technologie Saint-Nazaire (IUT Saint-Nazaire), Université de Nantes (UN)-Institut Universitaire de Technologie - La Roche-sur-Yon (IUT La Roche-sur-Yon), Université de Nantes (UN)-Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Université Bretagne Loire (UBL)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Université Bretagne Loire (UBL), Unité de recherche sur les Biopolymères, Interactions Assemblages (BIA), Institut National de la Recherche Agronomique (INRA), Université de Bretagne Sud (UBS), Institut Universitaire de Technologie Saint-Nazaire (IUT Saint-Nazaire), Université de Nantes (UN), Centre National de la Recherche Scientifique (CNRS), Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Université Bretagne Loire (UBL)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Université Bretagne Loire (UBL)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS), and Institut Universitaire de Technologie [Saint-Nazaire] (IUT)
Subjects: [SDV.BIO]Life Sciences [q-bio]/Biotechnology, Microalgae, Ultrafiltration, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, Bead Milling, Lipid/Proteins fractionation
Abstract: International audience; The micro-algae biorefinery offers the opportunities to replace traditional raw materials with biomolecules (lipids, proteins, polysaccharides, pigments, etc.) in various industrial sectors such as food, cosmetics, pharmacy, energy or chemistry. The challenge of this research is to adopt innovative strategies for a soft and efficient process to ensure the integrity of fragile molecules and to develop an eco-friendly production. Thus, for large-scale production, a wet processing of biomass has been proposed (Clavijo Rivera et al. 2018) to avoid expensive drying steps and to reduce solvent use compared to classical processes. Biomass wet treatment includes several steps: 1-the biomass harvesting for dewatering, 2-the cell disruption to release the valuable biochemical compounds in the aqueous phase, 3-the membrane fractionation to concentrate and recover the target compounds and 4-the purification. However, the key points needed for its improvement is to understand the interaction between upstream and downstream processes for a better coordination and control. In this context, the effect of bead milling (grinding degree, enzyme activity reduction and antioxidation ect.) on the membrane separation process for the fractionation of triglycerides from Parachlorella kessleri was studied. The filtration performance (flux, retention rate and selectivity) of supernatants issued from clarified suspensions obtained from various upstream disruption conditions were compared. The physico-chemical state of lipids, proteins and total carbohydrates during each step of process were followed. The final parameters were chosen for the best fractionation and selectivity of TAGs with the coordination's between the disruption process (bead milling) and the fractionation process (membrane filtration).
Published: 2019

26. Membrane filtration for the recovery of lipids from microalgae extracts

Author: Liu, S., Villafaña López, L, Clavijo, E, Bourseau, P., Frappart, M., Couallier, E, Bioprocédés Appliqués aux Microalgues (GEPEA-BAM), Laboratoire de génie des procédés - environnement - agroalimentaire (GEPEA), Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS)-Ecole Polytechnique de l'Université de Nantes (EPUN), Université de Nantes (UN)-Université de Nantes (UN)-Institut Universitaire de Technologie - Nantes (IUT Nantes), Université de Nantes (UN)-Institut Universitaire de Technologie Saint-Nazaire (IUT Saint-Nazaire), Université de Nantes (UN)-Institut Universitaire de Technologie - La Roche-sur-Yon (IUT La Roche-sur-Yon), Université de Nantes (UN)-Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Université Bretagne Loire (UBL)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Université Bretagne Loire (UBL), Agence de l'Environnement et de la Maîtrise de l'Energie (ADEME), Consejo Nacional de Ciencia y Tecnología [Mexico] (CONACYT), Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Ingénierie des Matériaux de Bretagne (LIMATB), Université de Bretagne Sud (UBS)-Université de Brest (UBO)-Institut Brestois du Numérique et des Mathématiques (IBNM), Université de Brest (UBO)-Université de Brest (UBO), Mines Nantes (Mines Nantes)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Centre National de la Recherche Scientifique (CNRS), Institut Universitaire de Technologie Saint-Nazaire (IUT Saint-Nazaire), and Université de Nantes (UN)
Subjects: [CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry, microalgae, ultrafiltration, lipid protein separation, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, [INFO.INFO-BT]Computer Science [cs]/Biotechnology, ComputingMilieux_MISCELLANEOUS, biomolecules fractionation
Abstract: International audience
Published: 2018

27. Recovery by nanofiltration and reverse osmosis of marine flavours from seafood cooking waters

Author: Vandanjon, L., Cros, S., Jaouen, P., Quéméneur, F., and Bourseau, P.
Published: 2002
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28. Tacrolimus 0.1% versus ciclopiroxolamine 1% for maintenance therapy in patients with severe facial seborrheic dermatitis: A multicenter, double-blind, randomized controlled study.

Author: Joly, Pascal, Tejedor, Ines, Tetart, Florence, Cailleux, Hélène Collas, Barrel, Alice, De Preville, Paul Arnaud, Mion-Mouton, Nathalie, Gabison, Germaine, Baricault, Sophie, Tordeur, Catherine Girardin, Dore, Martin Xavier, Rossi, Bernard, Bourseau-Quetier, Catherine, Chamaillard, Mélanie, Ly, Sandra, Chosidow, Olivier, Richard-Lallemand, Marie-Aleth, Rzeznik, Jean-Claude, Amici, Jean-Michel, and Lair, Guillaume
Abstract: Background: No long-term maintenance therapy has been tested in patients with seborrheic dermatitis (SD).Objective: We sought to compare the efficacy and tolerance of tacrolimus 0.1% ointment versus ciclopiroxolamine 1% cream as maintenance therapy for severe SD.Methods: This double-blind randomized controlled study was conducted from 2014 to 2017 in 5 Dermatology Departments and 15 dermatology practices in France. Consecutive patients with severe and chronic facial SD were included. Patients were initially treated with desonide 0.05% cream twice daily for 7 days. Patients cleared after this open phase were randomized to receive tacrolimus 0.1% or ciclopiroxolamine 1% cream 2 times a week 24 weeks. The primary endpoint was disease-free-duration, defined as the time from randomization to first relapse.Results: One hundred fourteen patients were randomized (tacrolimus, n = 57; ciclopiroxolamine, n = 57). Twelve patients relapsed in the tacrolimus group after a median delay of 91.5 days (range 15-195 days) versus 23 patients in the ciclopiroxolamine group (median delay, 27 days [range 13-201 days]). Comparison of disease-free duration curves showed that patients in the tacrolimus group had a longer duration of complete remission than those in the ciclopiroxolamine group (P = .018), corresponding to a hazard ratio of relapse of 0.44 (95% confidence interval 0.22-0.89; P = .022).Limitations: The theoretical sample size was not reached.Conclusion: Tacrolimus 0.1% is more effective than ciclopiroxolamine 1% as maintenance therapy for patients with facial SD. [ABSTRACT FROM AUTHOR]
Published: 2021
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29. Understanding microalgae lipids recovery by membrane processes: cross flow filtration of a representative synthetic mixture

Author: Clavijo Rivera, E., Lopéz, Villafaña, Liu, S., Bourseau, P., Frappart, M., Monteux, C., Couallier, E, Centre National de la Recherche Scientifique (CNRS), Bioprocédés Appliqués aux Microalgues (GEPEA-BAM), Laboratoire de génie des procédés - environnement - agroalimentaire (GEPEA), Institut Universitaire de Technologie - Nantes (IUT Nantes), Université de Nantes (UN)-Université de Nantes (UN)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-Institut Universitaire de Technologie Saint-Nazaire (IUT Saint-Nazaire), Université de Nantes (UN)-Ecole Polytechnique de l'Université de Nantes (EPUN), Université de Nantes (UN)-École nationale vétérinaire, agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Centre National de la Recherche Scientifique (CNRS)-Université Bretagne Loire (UBL)-IMT Atlantique (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Institut Universitaire de Technologie - La Roche-sur-Yon (IUT La Roche-sur-Yon), Université de Nantes (UN)-Institut Universitaire de Technologie - Nantes (IUT Nantes), Université de Nantes (UN), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Ingénierie des Matériaux de Bretagne (LIMATB), Université de Bretagne Sud (UBS)-Université de Brest (UBO)-Institut Brestois du Numérique et des Mathématiques (IBNM), Université de Brest (UBO)-Université de Brest (UBO), Biomécanique et génie biomédical (BIM), Sciences et Ingénierie de la Matière Molle (SIMM), Université Pierre et Marie Curie - Paris 6 (UPMC)-Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS)-Ecole Polytechnique de l'Université de Nantes (EPUN), Université de Nantes (UN)-Université de Nantes (UN)-Institut Universitaire de Technologie - Nantes (IUT Nantes), Université de Nantes (UN)-Institut Universitaire de Technologie Saint-Nazaire (IUT Saint-Nazaire), Université de Nantes (UN)-Institut Universitaire de Technologie - La Roche-sur-Yon (IUT La Roche-sur-Yon), Université de Nantes (UN)-Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Université Bretagne Loire (UBL)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Université Bretagne Loire (UBL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Pierre et Marie Curie - Paris 6 (UPMC), Université de Nantes (UN)-Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Centre National de la Recherche Scientifique (CNRS)-Université Bretagne Loire (UBL)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), and COUALLIER, Estelle
Subjects: [SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering
Abstract: International audience; Microalgae are considered as a feedstock of high-valuable products such as proteins, polysaccharides and lipids. The microalgae biorefinery concept considers the fractionation of biomass into multiple products whose integrity needs to be preserved during separation. In the context of lipids separation from aqueous microalgae, the recovery of triglycerides, suitable for biodiesel production, can be accomplished using membrane filtration techniques, but the presence of amphiphilic molecules in the feed solution deeply influences the process performances (permeate flux, selectivity and cleanability). This research focuses on the understanding of neutral lipids separation by membrane processes from a complex mixture of grinded microalgae, in presence of polar compounds stabilizing the water-oil interface. Due to the complexity and variability of grinded microalgae suspensions, a simplified synthetic solution (oil-in-water o/w emulsion) has been formulated and used for this study. Lipids used in the formulation were defined on the basis of a preliminary lipids characterization from nitrogen starving Parachlorella kessleri. The prepared emulsion was constituted by 98% w/w of water and 2% w/w of lipids. The dispersed fraction was composed of 70% w/w of a mixture of vegetable oils (as neutral lipids) and 30% of polar lipids as surfactants: 50% of phospholipid and 50% of glycolipid. An emulsification protocol, performed using a high-speed dispersing unit, was established to obtain a stable o/w emulsion with a specific droplet size distribution. The oil separation performance was assessed for five membranes, hydrophilic (PAN 500kDa, PES 300kDa and 200kDa) and hydrophobic (PVDF 1.5μm and 0.4μm) using a cross-flow filtration system. Oil concentration was evaluated in the retentate and the permeate. Results showed an oil retention rate higher than 92% and oil permeation only for PVDF membranes. These results were compared with experimental data obtained within the same context but using dynamic filtration, for which critical and transmembrane pressures were higher. The PAN 500kDa membrane exhibited the most suitable characteristics for oil concentration purposes in terms of permeate flux, retention and cleanability. Subsequently, the oil-water interface was physicochemically characterized in order to evaluate the influence of the filtration process on the emulsion stability. The response of the interfacial tension to compression/dilatation of the interface was assessed for different surfactant concentrations, suggesting possible rearrangements and adsorption/desorption of amphiphilic molecules at the L-L interfacial layer. Further experiments at the liquid-solid interface (sessile drop analysis) with clean and fouled membranes will provide fundamental information for understanding the relation between interfacial properties and the emulsion destabilization during filtration.
Published: 2017

30. Filtration d'une émulsion représentative d'un extrait de microalgues pour la concentration des lipides : Comparaison des filtrations dynamique et tangentielle

Author: Villafaña-López, L, Liu, S., Clavijo, E, Bourseau, P, Couallier, Estelle, Frappart, Matthieu, Consejo Nacional de Ciencia y Tecnología [Mexico] (CONACYT), Bioprocédés Appliqués aux Microalgues (GEPEA-BAM), Laboratoire de génie des procédés - environnement - agroalimentaire (GEPEA), Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS)-Ecole Polytechnique de l'Université de Nantes (EPUN), Université de Nantes (UN)-Université de Nantes (UN)-Institut Universitaire de Technologie - Nantes (IUT Nantes), Université de Nantes (UN)-Institut Universitaire de Technologie Saint-Nazaire (IUT Saint-Nazaire), Université de Nantes (UN)-Institut Universitaire de Technologie - La Roche-sur-Yon (IUT La Roche-sur-Yon), Université de Nantes (UN)-Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Université Bretagne Loire (UBL)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Université Bretagne Loire (UBL), Agence de l'Environnement et de la Maîtrise de l'Energie (ADEME), Centre National de la Recherche Scientifique (CNRS), Université de Bretagne Sud (UBS), Institut Universitaire de Technologie Saint-Nazaire (IUT Saint-Nazaire), and Université de Nantes (UN)
Subjects: filtration tangentielle, Microalgue, bioraffinage, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, filtration dynamique, membrane
Abstract: National audience; Les étapes de déconstruction cellulaire et d'extraction des lipides de cellules de microalgues sont deux étapes essentielles pour la production de biocarburants de 3 ème génération. Dans un contexte de bioraffinage, la récupération des lipides en voie humide, limitant les étapes de séchage de la biomasse, peut être améliorée en utilisant des méthodes de filtration. Ces procédés permettraient également de réduire les consommations énergétiques mais aussi de valoriser d'autres fractions métaboliques. Ces méthodes peuvent être automatisées et peuvent traiter de grands volumes de suspensions sans utiliser de solvants ou de produits chimiques. Récemment, la technique de filtration dynamique (DF) a émergé comme une option prometteuse qui réduit le colmatage des membranes et fournit des flux de perméat élevés avec de bonnes performances de séparation et de faibles besoins énergétiques. Dans ce travail, une émulsion synthétique a été formulée pour simuler le profil lipidique des microalgues broyées P. kessleri, connue pour sa forte production de lipides dans des conditions carencées, et faciliter la compréhension du comportement des fractions lipidiques au cours au cours du procédé de séparation. La filtration de l'émulsion en filtration dynamique a été testée avec cinq membranes commerciales (nature du matériau, hydrophilie et seuil de coupure) pour identifier les membranes qui permettront la concentration des lipides et leur coalescence. Les performances de la filtration ont été évaluées à travers le taux de rétention d'huile, le flux de perméat, les résistances de colmatage et la capacité de nettoyage de la membrane. L'émulsion initiale et les échantillons prélevés tout au long des expériences ont été caractérisés par une distribution de taille de gouttelettes (par microscopie optique), une analyse gravimétrique et des mesures de conductivité. Une étude similaire a été réalisée en filtration tangentielle plane (Rayflow), et a permis la comparaison des résultats obtenus. Quelle que soit la nature de la membrane utilisée, et le mode de circulation, les résultats obtenus montrent que la fraction lipidique est principalement retenue dans la suspension initiale. L'apport de la filtration dynamique s'observe essentiellement sur les flux et les pressions critiques. Ces expériences de filtration sont des étapes nécessaires dans le développement des stratégies innovantes pour la séparation des lipides des souches réelles de microalgues, en voie humide à faible consommation d'énergie. Remerciements : Les auteurs remercient le CNRS (l'INSIS et la mission interdisciplinaire), le GIS Europôle Mer et la CONACYT (Mexique) pour leur soutien financier.
Published: 2017

31. Les atteintes oculaires et périoculaires de la dermatomyosite

Author: Bourseau-Quetier, C. and Jegou, M.-H.
Published: 2021
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32. Filtration d'une émulsion représentative d'un extrait de microalgues pour la concentration des lipides : choix de membrane et caractérisation du colmatage

Author: Clavijo Rivera, E, Villafaña López, L, Liu, S., Drevet, V, Bourseau, P, Szymczyk, A, Rabiller Baudry, M, Frappart, M, Couallier, Estelle, COUALLIER, Estelle, Centre National de la Recherche Scientifique (CNRS), Bioprocédés Appliqués aux Microalgues (GEPEA-BAM), Laboratoire de génie des procédés - environnement - agroalimentaire (GEPEA), Institut Universitaire de Technologie - Nantes (IUT Nantes), Université de Nantes (UN)-Université de Nantes (UN)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-Institut Universitaire de Technologie Saint-Nazaire (IUT Saint-Nazaire), Université de Nantes (UN)-Ecole Polytechnique de l'Université de Nantes (EPUN), Université de Nantes (UN)-École nationale vétérinaire, agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Centre National de la Recherche Scientifique (CNRS)-Université Bretagne Loire (UBL)-IMT Atlantique (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Institut Universitaire de Technologie - La Roche-sur-Yon (IUT La Roche-sur-Yon), Université de Nantes (UN)-Institut Universitaire de Technologie - Nantes (IUT Nantes), Université de Nantes (UN), Consejo Nacional de Ciencia y Tecnología [Mexico] (CONACYT), Agence de l'Environnement et de la Maîtrise de l'Energie (ADEME), Institut des Sciences Chimiques de Rennes (ISCR), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Université de Bretagne Sud (UBS), Institut Universitaire de Technologie Saint-Nazaire (IUT Saint-Nazaire), Université de Nantes (UN)-Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Centre National de la Recherche Scientifique (CNRS)-Université Bretagne Loire (UBL)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), and Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, ultrafiltration, lipides, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, microfiltration, microalgues
Abstract: National audience; Les microalgues sont des microorganismes capables de transformer le dioxyde de carbone en biomasse et en molécules valorisables telles que les triglycérides, les protéines ou les polysaccharides qui sont d'un grand intérêt pour les biocarburants, l'alimentation, la pharmacie ou les cosmétiques. Le bioraffinage des microalgues nécessite le développement d'une cascade de procédés économes en énergie et suffisamment doux pour garantir l'intégrité des composés fragiles et la valorisation de toutes le fractions. La filtration membranaire est un procédé de séparation prometteur pour la concentration et la purification de lipides et de coproduits, après la récolte de la biomasse, sa concentration et la déconstruction des cellules. Cependant l'intégration des procédés membranaire n'est pas triviale, étant donné la complexité des solutions à traiter : elle peuvent contenir des fragments cellulaires, des particules et des gouttelettes de lipides, des composés organiques et minéraux. La récupération des différents composés dépend beaucoup de leurs propriétés physico-chimiques et de leurs interactions entre eux et avec la membrane. C'est pourquoi le développement du bioraffinage des microalgues nécessite une étude depuis l'échelle de la molécule jusqu'au procédé. Le travail présenté ici concerne l'intégration de la filtration membranaire dans le bioraffinage des microalgues pour la récupération des lipides. Un mélange synthétique constitué d'une émulsion d'huile dans l'eau a été formulé, sur la base de la caractérisation d'un extrait de microalgues, cultivées en condition de carence en azote pour favoriser la production de lipides. Plusieurs membranes organiques commerciales (en PAN, PES et PVDF) présentant différentes propriétés hydrophiles/hydrophobes et différents seuils de coupure ont été testées dans un pilote plan Rayflow, à l'échelle du laboratoire. Le premier objectif est de sélectionner la membrane présentant un colmatage limité pendant la concentration. Le deuxième objectif est de mieux comprendre le colmatage des membranes par les lipides, en fonction des interactions avec les différents matériaux. Outre la mesure des flux et des taux de rétention des lipides, l'effet de la filtration sur la stabilité de l'émulsion a été caractérisé, et les résistances dues au colmatage réversible physiquement ou chimiquement et irréversible ont été calculées. Le colmatage a été étudié par spectrométrie ATR-FTIR, par mesure des angles de contacts et mesure du potentiel zêta. La quantification des lipides sur les membranes par ATR-FTIR a nécessité le développement d'une méthode spécifique. Le couplage des différentes techniques de caractérisation ouvre des perspectives intéressantes pour une meilleure compréhension du colmatage des membranes par des mélanges complexes contenant des lipides. Les outils développés seront utiles non seulement pour le bioraffinage de microalgues mais aussi pour le fractionnement de milieux complexes dans le cadre du bioraffinage de plantes supérieures, ou du traitement d'effluents industriels par exemple.
Published: 2017

33. Characterization of the lipid fraction of grinded stressed p. Chlorella Kessleri and formulation of a representative synthetic mixture, to initiate the study of lipids concentration by membrane filtration

Author: Clavijo, Erika, Montalescot, V., Viau, M., Kucma, D., Bourseau, P., Frappart, M., Monteux, C., Couallier, Estelle, Centre National de la Recherche Scientifique (CNRS), Bioprocédés Appliqués aux Microalgues (GEPEA-BAM), Laboratoire de génie des procédés - environnement - agroalimentaire (GEPEA), Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Université Bretagne Loire (UBL)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Université Bretagne Loire (UBL)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS), Unité de recherche sur les Biopolymères, Interactions Assemblages (BIA), Institut National de la Recherche Agronomique (INRA), Université de Bretagne Sud (UBS), Institut Universitaire de Technologie [Saint-Nazaire] (IUT), Université de Nantes (UN), Sciences et Ingénierie de la Matière Molle (SIMM), ESPCI ParisTech-PSL Research University (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), COUALLIER, Estelle, Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS)-Ecole Polytechnique de l'Université de Nantes (EPUN), Université de Nantes (UN)-Université de Nantes (UN)-Institut Universitaire de Technologie - Nantes (IUT Nantes), Université de Nantes (UN)-Institut Universitaire de Technologie Saint-Nazaire (IUT Saint-Nazaire), Université de Nantes (UN)-Institut Universitaire de Technologie - La Roche-sur-Yon (IUT La Roche-sur-Yon), Université de Nantes (UN)-Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Université Bretagne Loire (UBL)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Université Bretagne Loire (UBL), Institut Universitaire de Technologie Saint-Nazaire (IUT Saint-Nazaire), Sciences et Ingénierie de la Matière Molle (UMR 7615) (SIMM), Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), and Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [SDV.BIO]Life Sciences [q-bio]/Biotechnology, [SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, [SDV.BIO] Life Sciences [q-bio]/Biotechnology
Abstract: International audience; Nitrogen starving Parachlorella kessleri can accumulate lipids up to 45% (w/w) of the dry matter (Montalescot, 2015), mainly triacylglycerides (TAG). Those lipids can be recovered using a mechanical cell disruption process followed by membrane filtration, but the surface properties of lipid droplets stabilized by the polar compounds deeply impact the oil separation. In order to study the influence of the interfacial phenomena on the lipids fractionation by membrane processes, a synthetic mixture, based on the lipids profile of different suspensions of disrupted P. kessleri has been defined. The total fatty acids profile from the microalgae samples was obtained by GC-FID. Lipids were mainly composed by oleic (22-35%), linoleic (20-27%), linolenic (21-22%) and palmitic (14-20%) acids. The analysis of the polar fraction by HPTLC let to the identification of phosphatidylcholine-PC (27-31%), phosphatidylethanolamine + phosphatidylglycerol + sulfoquinovosyldiacylglycerol PE+PG+SQDG (25-34%) and digalactosyldiacylglycerol-DGDG (9-17%). The synthetic mixture, an o/w emulsion composed by water, neutral and polar lipids (2% w/w of lipids), was obtained using a high shear roto-stator homogenizer. It was used to test several hydrophobic and hydrophilic membrane materials (PES, PVDF, PAN) ranging from microfiltration to ultrafiltration cutoff. Membranes of interest were chosen considering their performances in terms of permeate fluxes and oil retention. First results showed for most of the tested membranes a high oil rejection. Coalescence of oils droplets seems to appear beyond 10% (w/w) of oil in the retentate. To get the information on how the interfacial phenomena influence the lipids separation by membrane processes further filtration tests are required.
Published: 2016

34. CHARACTERIZATION OF LIPIDS PRODUCED BY PARACHLORELLA KESSLERI, CULTURED UNDER NITROGEN STARVING CONDITIONS

Author: Clavijo, Erika, Montalescot, V., Viau, M., Kucma, D., Bourseau, P., Frappart, M., Monteux, C., Couallier, Estelle, Centre National de la Recherche Scientifique (CNRS), Bioprocédés Appliqués aux Microalgues (GEPEA-BAM), Laboratoire de génie des procédés - environnement - agroalimentaire (GEPEA), Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Université Bretagne Loire (UBL)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Université Bretagne Loire (UBL)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS), Unité de recherche sur les Biopolymères, Interactions Assemblages (BIA), Institut National de la Recherche Agronomique (INRA), Université de Bretagne Sud (UBS), Institut Universitaire de Technologie [Saint-Nazaire] (IUT), Université de Nantes (UN), Sciences et Ingénierie de la Matière Molle (SIMM), ESPCI ParisTech-PSL Research University (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Centre National de la Recherche Scientifique (CNRS)-Ecole Polytechnique de l'Université de Nantes (EPUN), Université de Nantes (UN)-Université de Nantes (UN)-Institut Universitaire de Technologie - Nantes (IUT Nantes), Université de Nantes (UN)-Institut Universitaire de Technologie Saint-Nazaire (IUT Saint-Nazaire), Université de Nantes (UN)-Institut Universitaire de Technologie - La Roche-sur-Yon (IUT La Roche-sur-Yon), Université de Nantes (UN)-Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Université Bretagne Loire (UBL)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Université Bretagne Loire (UBL), Institut Universitaire de Technologie Saint-Nazaire (IUT Saint-Nazaire), Sciences et Ingénierie de la Matière Molle (UMR 7615) (SIMM), Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), and COUALLIER, Estelle
Subjects: [SDV.BIO]Life Sciences [q-bio]/Biotechnology, [SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, lipids (amino acids, peptides, and proteins), [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, [SDV.BIO] Life Sciences [q-bio]/Biotechnology
Abstract: International audience; This work is developed in the context of biofuel production from microalgae. Nitrogen starving Parachlorella kessleri can accumulate lipids up to 45% (w/w) of the dry matter (Montalescot, 2015). Mechanical methods, like bead milling (BM) or high pressure cell disruption (HPCD) can be used (Cohen, 1999; Montalescot, 2015; Shene, 2015) to release the oil from the cell, before fractionation by membrane processes. For a better understanding of their behavior during fractionation, a detailed profile of the neutral and polar lipids is required. Indeed, the surface properties of lipid droplets stabilized by the polar compounds deeply impact the triacylglycerides (TAG) recovery. The lipid composition of other strains was published but mainly for cultures at the end of the stationary growth phase (Chen et al., 2007; Bigogno et al., 2002; Alonso et al., 1998). It has not been studied with such details for disrupted P. kessleri cultured under nitrogen starving conditions. In this work, non-disrupted and disrupted cells samples were characterized, as well as the supernatant of the latter obtained by centrifugation. Lipids were extracted with a modified Bligh and Dyer method, using CHCl 3 /MeOH (2:1, v/v). Total fatty acids (FA) were analyzed by GC-FID. The lipids classes separation (neutral and polar lipids) was performed by solid-phase extraction and analyzed by RP-HPLC and by HPTLC. The total FA profiles were similar for samples from the same batch, including BM and HPCD: C18:2n-6c (22-35%), C18:1n-9c (20-27%), C18:3n-3 (21-22%) and C16:0 (14-20%). The neutral lipids fraction (31-85% TAG) was up to 9 times higher than the polar one. The HPLC chromatograms present a highly complex profile. Concerning the polar fraction, several polar compounds already reported in the literature were identified: phosphatidylcholine PC (27-31%), phosphatidylethanolamine + phosphatidylglycerol + sulfoquinovosyldiacylglycerol PE+PG+SQDG (25-34%) and digalactosyldiacylglycerol DGDG (9-17%). The disruption method had an impact on the lipid class proportions. Then the formulation of a synthetic lipid mixture was deduced from analytical results to reproduce interfacial properties. This study is a first step to understand how the interfacial phenomena influence the lipids fractionation by membrane processes after disruption in a wet pathway.
Published: 2016

35. Extraction of molecules from brown macroalgae Sargassum muticum by enzymatic hydrolysis improved by the use of surfactants

Author: Vandanjon, Laurent, Vallet, L., Deleris, P., Bourseau, P., Baron, R., Dumay, J., Laboratoire de Biotechnologie et Chimie Marines (LBCM), Université de Bretagne Sud (UBS)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM), Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de génie des procédés - environnement - agroalimentaire (GEPEA), Mines Nantes (Mines Nantes)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Centre National de la Recherche Scientifique (CNRS), and VANDANJON, Laurent
Subjects: [SDV] Life Sciences [q-bio], [SDV]Life Sciences [q-bio], ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2016

36. Electrodialysis desalination and reverse osmosis concentration of an industrial mussel cooking juice: process impact on pollution reduction and on aroma quality

Author: Cros, S., Lignot,B., Razafintsalama, C., Bourseau, P., and Jaouen, P.
Subjects: Food conservation -- Research, Mussels, Business, Food/cooking/nutrition
Abstract: An industrial mussel cooking juice was treated by a three-step process to produce a natural aroma concentrate and a cleaned water stream. The result indicates that the concentration process preserved the native characteristic aroma of the cooked mussel, of interest to human or pet food industries.
Published: 2004

37. Enzymatic extraction of molecules from brown macroalgae

Author: Vallet, L., Vandanjon, Laurent, Baron, R., Dumay, J., Bourseau, P., Laboratoire de génie des procédés - environnement - agroalimentaire (GEPEA), Mines Nantes (Mines Nantes)-Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-Ecole Nationale Vétérinaire, Agroalimentaire et de l'alimentation Nantes-Atlantique (ONIRIS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Biotechnologie et Chimie Marines (LBCM), Université de Bretagne Sud (UBS)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM), Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), and VANDANJON, Laurent
Subjects: [SDV] Life Sciences [q-bio], [SDV]Life Sciences [q-bio], ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2015

38. Microplastics elutriation system: Part B: Insight of the next generation.

Author: Kedzierski, Mikaël, Le Tilly, Véronique, Bourseau, Patrick, César, Guy, Sire, Olivier, and Bruzaud, Stéphane
Subjects: PLASTIC marine debris, SEDIMENTS, SUSPENSIONS (Chemistry), EXTRACTION (Chemistry), MATHEMATICAL models
Abstract: Elutriation is an efficient process for extracting microplastics. The development of a numerical model has shown the need for optimizing aspects of the design of the actual elutriation protocol as well as the dimensioning of the column to increase its efficiency. The study aims to propose new dimensioning data and protocol elements for designing an efficient column. Using a numerical model, the filling velocity was calculated as a function of the size and the density of the particles to prevent sand suspension. The sieving protocol was adapted to increase the density limit for the extraction of plastic particles from 1460 to >1800 kg·m −3 . The durations of the elutriation and the column height were calculated to improve the control of the particle suspension. These results contribute to the development of the next generation of elutriation system and will accelerate the study of plasticome in the context of sandy sediments. [ABSTRACT FROM AUTHOR]
Published: 2018
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39. Kératodermie aquagénique palmo-plantaire : peut-on proposer une attitude ?

Author: Bourseau-Quetier, C. and Ly, S.
Published: 2019
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40. Transport of salt mixtures through nanofiltration membranes: identification of electric and dielectric contributions

Author: Déon, S., Dutournié, Patrick, Limousy, L., Bourseau, P., Laboratoire d'Ingénierie des Matériaux de Bretagne (LIMATB), Université de Bretagne Sud (UBS)-Institut Brestois du Numérique et des Mathématiques (IBNM), Université de Brest (UBO)-Université de Brest (UBO)-Université de Brest (UBO), and Chauvin, Noluenn
Subjects: [SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2009

41. Design Of Experiments (DOE) methodology to optimise the antioxidant activity of a Saithe (pollachius virens) muscle hydrolysate

Author: Chabeaud, A., Dutournié, Patrick, Guérard, Fabienne, Vandanjon, L., Bourseau, P., Chauvin, Noluenn, Laboratoire d'Ingénierie des Matériaux de Bretagne (LIMATB), Université de Bretagne Sud (UBS)-Université de Brest (UBO)-Institut Brestois du Numérique et des Mathématiques (IBNM), and Université de Brest (UBO)-Université de Brest (UBO)
Subjects: [SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering, [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering, ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2009

42. Transfer of ionic solutes through nanofiltration membranes: A model combining concentration polarization layer and pores transport

Author: Déon, S., Dutournié, Patrick, Bourseau, P., Bourseau, Patrick, Laboratoire d'Ingénierie des Matériaux de Bretagne (LIMATB), Université de Bretagne Sud (UBS)-Institut Brestois du Numérique et des Mathématiques (IBNM), Université de Brest (UBO)-Université de Brest (UBO)-Université de Brest (UBO), and Chauvin, Noluenn
Subjects: ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2007

43. Transfer of charged molecules through nanofiltration membranes: a model combining transport through pores and polarization layer

Author: Déon, S., Dutournié, Patrick, Bourseau, P., Chauvin, Noluenn, Laboratoire d'Ingénierie des Matériaux de Bretagne (LIMATB), Université de Bretagne Sud (UBS)-Institut Brestois du Numérique et des Mathématiques (IBNM), and Université de Brest (UBO)-Université de Brest (UBO)-Université de Brest (UBO)
Subjects: ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2007

44. Transfer of ionic solutes through nanofiltration membranes : a model combining polarization layer and pores transport

Author: Déon, S., Dutournié, Patrick, Bourseau, P., Chauvin, Noluenn, Laboratoire d'Ingénierie des Matériaux de Bretagne (LIMATB), Université de Bretagne Sud (UBS)-Institut Brestois du Numérique et des Mathématiques (IBNM), and Université de Brest (UBO)-Université de Brest (UBO)-Université de Brest (UBO)
Subjects: ComputingMilieux_MISCELLANEOUS
Abstract: International audience
Published: 2007

45. Microplastics elutriation system. Part A: Numerical modeling.

Author: Kedzierski, Mikaël, Le Tilly, Véronique, Bourseau, Patrick, Bellegou, Hervé, César, Guy, Sire, Olivier, and Bruzaud, Stéphane
Subjects: PLASTIC marine debris, PLASTIC scrap, MARINE debris, PLASTICS & the environment, MARINE pollution
Abstract: The elutriation process has shown its efficiency to extract microplastics from sand and began to spread in the scientific community. This extraction technic requires knowing with accuracy the extraction velocities of particles. This study aims to test whether numerical modeling could help to calculate these velocities. From hydrodynamic equations, a numerical model has been developed and the outputs are compared to experimental extraction data. The results show, for the calculated velocities, the experimental plastic extraction yields will be higher than 90% for < 10% of sand contamination. The model also allows determining that, with the actual protocol, the maximum plastic density which can be extracted is about 1450 kg·m − 3 whereas the detrimental resuspension, which may occur during the column filling step, is highlighted. From model calculations, it arises that changes in the column dimensioning and the protocol operations need to be considered. [ABSTRACT FROM AUTHOR]
Published: 2017
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46. List of Contributors

Author: Abbas, B., Abreu, A., Adams, R., Adolfsson-Erici, M., Afonso, A., Afonso-Olivares, C., Agirbas, E., Aguiló, J.M., Airoldi, L., Aksoy, H., Albentosa, M., Alcaro, L., Aliani, S., Al-Maslamani, I., Alomar, C., Altin, D., Álvarez, E., Amaral-Zettler, L.A., Amato, E., Anderson, A., Andrady, A.L., Andrius, G., Angel, D., Ariese, F., Arp, H.P., Asensio, M., Assidqi, K., Avio, C.G., Aytan, U., Bahri, T., Baini, M., Bakir, A., Ball, H., Baranyi, C., Barboza, L.G.A., Barg, U., Bargelloni, L., Barras, H., Barrera, C., Barria, P., Barrows, A., Barth, A., Batel, A., Baztan, J., Baztan, P., Beiras, R., Benedetti, M., Berber, A.A., Berber, N., Bergmann, M., Berlino, M., Berrow, S., Bessa, F., Besseling, E., Beyer, B., Binaglia, M., Bizjak, T., Bjorndal, K.A., Blust, R., Boertien, M., Bolten, A.B., Booth, A.M., Bounoua, B., Bourseau, P., Brahimi, N., Bramini, M., Brennholt, N., Breuninger, E., Bried, J., Broderick, A., Broglio, E., Browne, M.A., Bruzaud, S., Buceta, J., Buchinger, S., Budimir, S., Budzin-ski, H., Butter, E., Cachot, J., Caetano, M., Callaghan, A., Camedda, A., Capella, S., Cardelli, L., Carpentieri, S., Carrasco, A., Carriço, R., Caruso, A., Cassone, A.-L., Castillo, A., Castro, R.O., Catarino, A.I., Cazenave, P.W., Çelik, İ., Cerralbo, P., César, G., Chouinard, O., Chubarenko, I., Chubarenko, I.P., Cicero, A.M., Clarindo, G., Clarke, B., Clérandeau, C., Clüsener-Godt, M., Codina-García, M., Cole, M., Collard, F., Collignon, A., Collins, T., Compa, M., Conan, P., Constant, M., Cordier, M., Courtene-Jones, W., Cousin, X., Covelo, P., Cózar, A., Crichton, E., Crispi, O., Cronin, M., Croot, P.L., Cruz, M.J., d’Errico, G., Dâmaso, C., Das, K., de Alencastro, L.F., de Araujo, F.V., de Boer, J.F., de Lucia, G.A., Debeljak, P., Dehaut, A., Deudero, S., Devrieses, L., Di Vito, S., Díaz, A., Donohue, J., Doumenq, P., Doyle, T.K., Dris, R., Druon, J.-N., Duarte, C.M., Duflos, G., Dumontier, M., Duncan, E., Dussud, C., Eckerlebe, A., Egelkraut-Holtus, M., Eidsvoll, D.P., Ek, C., Elena, S., Elineau, A., Enevoldsen, H., Eppe, G., Eriksen, M., Ernsteins, R., Espino, M., Estévez-Calvar, N., Ewins, C., Fabre, P., Faimali, M., Fattorini, D., Faure, F., Ferrando, S., Ferreira, J.C., Ferreira-da-Costa, M., Fileman, E., Fischer, M., Fortunato, A.B., Fossi, M.C., Foulon, V., Frank, A., Frenzel, M., Frère, L., Frias, J.P.G.L., Frick, H., Froneman, P.W., Gabet, V.M., Gabrielsen, G.W., Gago, J., Gajst, T., Galgani, F., Gallinari, M., Galloway, T.S., Gamarro, E.G., Gambardella, C., Garaventa, F., Garcia, S., Garrabou, J., Garrido, P., Gary, S.F., Gasperi, J., Gaze, W., Geertz, T., Gelado-Caballero, M.D., George, M., Gercken, J., Gerdts, G., Ghiglione, J.-F., Gies, E., Gilbert, B., Giménez, L., Glassom, D., Glockzin, M., Godley, B., Goede, K., Goksøyr, A., Gómez, M., Gómez-Parra, A., González-Marco, D., González-Solís, J., Gorbi, S., Gorokhova, E., Gorsky, G., Gosch, M., Grose, J., Guebitz, G.M., Guedes-Alonso, R., Guijarro, B., Guilhermino, L., Gundry, T., Gutow, L., Haave, M., Haeckel, M., Haernvall, K., Hajbane, S., Hamann, M., Hämer, J., Hamm, T., Hansen, B.H., Hardesty, B.D., Harth, B., Hartikainen, S., Hassellöv, M., Hatzky, S., Healy, M.G., Hégaret, H., Henry, T.B., Hermabessiere, L., Hernández-Brito, J.J., Hernandez-Gonzalez, A., Hernandez-Milian, G., Hernd, G., Herrera, A., Herring, C., Herzke, D., Heussner, S., Hidalgo-Ruz, V., Himber, C., Holland, M., Hong, N.-H., Horton, A.A., Horvat, P., Huck, T., Huhn, M., Huvet, A., Iglesias, M., Igor, C., Isachenko, I.A., Ivar do Sul, J-A., Jahnke, A., Janis, B., Janis, K., Janis, U., Jemec, A., Jiménez, J.C., Johnsen, H., Jorgensen, B., Jørgensen, J.H., Jörundsdóttir, H., Jung, Y.-J., Kedzierski, M., Keiter, S., Kershaw, P., Kerhervé, P., Kesy, K., Khan, F., Khatmullina, L.I., Kirby, J., Kiriakoulakis, K., Klein, R., Klunderud, T., Knudsen, C.M.H., Knudsen, T.B., Kochleus, C., Koelmans, A.A., Kögel, T., Koistinen, A., Kopke, K., Korez, Š., Kowalski, N., Kreikemeyer, B., Kroon, F., Krumpen, T., Krzan, A., Kržan, A., Labrenz, M., Lacroix, C., Ladirat, L., Laforsch, C., Lagarde, F., Lahive, E., Lambert, C., Lapucci, C., Lattin, G., Law, K.L., Le Roux, F., Le Souef, K., Le Tilly, V., Lebreton, L., Leemans, E., Lehtiniemi, M., Lenz, M., Leskinen, J., Leslie, H., Leslie, H.A., Levasseur, C., Lewis, C., Licandro, P., Lind, K., Lindeque, P., Lindeque, P.K., Lips, I., Liria, A., Liria-Loza, A., Llinás, O., Loiselle, S.A., Long, M., Lorenz, C., Lorenzo, S.M., Loubar, K., Luna-Jorquera, G., Lusher, A.L., Macchia, V., MacGabban, S., Mackay, K., MacLeod, M., Maes, T., Magaletti, E., Maggiore, A., Magnusson, K., Mahon, A.M., Makorič, P., Mallow, O., Marques, J., Marsili, L., Martí, E., Martignac, M., Martin, J., Martínez, I., Martínez, J., Martinez-Gil, M., Martins, H.R., Matiddi, M., Maximenko, N., Mazlum, R., Mcadam, R., Mcknight, L., McNeal, A.W., Measures, J., Mederos, M.S., Mendoza, J., Meyer, M.S., Miguelez, A., Milan, M., Militão, T., Miller, R.Z., Mino-Vercellio-Verollet, M., Mir, G., Miranda-Urbina, D., Misurale, F., Montesdeoca-Esponda, S., Mora, J., Morgana, S., Moriceau, B., Morin, B., Morley, A., Morrison, L., Murphy, F., Naidoo, T., Näkki, P., Napper, I.E., Narayanaswamy, B.E., Nash, R., Negri, A., Nel, H.A., Nerheim, M.S., Nerland, I.L., Neto, J., Neves, V., Nies, H., Noel, M., Nor, N.H.M., Noren, F., O’ Connell, B., O’ Connor, I., Obbard, J.P., Oberbeckmann, S., Obispo, R., Officer, R., Ogonowski, M., Orbea, A., Ortlieb, M., Osborn, A.M., Ostiategui-Francia, P., Packard, T., Pahl, S., Palatinus, A., Palmqvist, A., Pannetier, P., Panti, C., Parmentier, E., Pasanen, P., Patarnello, T., Pattiaratchi, C., Pauletto, M., Paulus, M., Pavlekovsky, K., Pedersen, H.B., Pedrotti, M.-L., Peeken, I., Peeters, D., Peeters, E., Pellegrini, D., Perales, J.A., Perez, E., Perz, V., Petit, S., Pflieger, M., Pham, C.K., Piazza, V., Pinto, M., Planells, O., Plaza, M., Pompini, O., Potthoff, A., Prades, L., Primpke, S., Proietti, M., Proskurowski, G., Puig, C., Pujo-Pay, M., Pullerits, K., Queirós, A.M., Quinn, B., Raimonds, E., Ramis-Pujol, J., Rascher-Friesenhausen, R., Reardon, E., Regoli, F., Reichardt, A.M., Reifferscheid, G., Reilly, K., Reisser, J., Riba, I., Ribitsch, D., Rinnert, E., Rios, N., Rist, S.E., Rivadeneira, M.M., Rivière, G., Robbens, J., Robertson, C.J.R., Rocher, V., Rochman, C.M., Rodrigues, M., Rodriguez, Y., Rodríguez, A., Rodríguez, G., Rodríguez, J.R.B., Rodríguez, S., Rodríguez, Y., Rogan, E., Rojo-Nieto, E., Romeo, T., Ross, P.S., Roveta, A., Rowland, S.J., Ruckstuhl, N.A., Ruiz-Fernández, A-C., Ruiz-Orejón, L.F., Runge, J., Russell, M., Saavedra, C., Saborowski, R., Sahin, B.E., Sailley, S., Sakaguchi-Söder, K., Salaverria, I., Sánchez-Arcilla, A., Sánchez-Nieva, J., Sanderson, W., Santana-Rodríguez, J.J., Santana-Viera, S., Santos, M.B., Santos, M.R., Sanz, M.R., Sardá, R., Savelli, H., Schoeneich-Argent, R., Scholz-Böttcher, B.M., Sciacca, F., Scofield, R.P., Setälä, O., Selenius, M., Sempere, R., Senturk, Y., Shashoua, Y., Sherman, P., Sick, C., Siegel, D., Sierra, J.P., Silva, F., Silvestri, C., Sintija, G., Sire, O., Slat, B., Smit, A., Sobral, P., Sorvari, J., Sosa-Ferrera, Z., Sotillo, M.G., Soudant, P., Speidel, L., Spurgeon, D.J., Steer, M.K., Steindal, C.C., Stifanese, R., Štindlová, A., Stuurman, L., Suaria, G., Suazo, C.G., Sureda, A., Surette, C., Svendsen, C., Syberg, K., Tairova, Z., Talvitie, J., Tassin, B., Tazerout, M., Tekman, M.B., ter Halle, A., Thiel, M., Thomas, K.V., Thompson, R.C., Tinkara, T., Tirelli, V., Tomassetti, P., Toorman, E., Toppe, J., Tornambè, A., Torres, R., Torres-Padrón, M.E., Underwood, A.J., Urbina, M., Usategui-Martín, A., Usta, R., Valdés, L., Valente, A., Valentina, T., van Arkel, K., Van Colen, C., Van Der Hal, N., van Franeker, J.A., Van Herwerden, L., Van Loosdrecht, M., van Oyen, A., Vandeperre, F., Vanderlinden, J-P., Vani, D., Vasconcelos, L., Vega-Moreno, D., Ventero, A., Vethaak, A.D., Vianello, A., Vicioso, M., Vieira, L.R., Viršek, M.K., Vos, M., Wahl, M., Wallace, N., Walton, A., Waniek, J.J., Watts, A., Webster, L., Wesch, C., Whitfield, E., Wichels, A., Wieczorek, A.M., Wilcox, C., Williams, R.J., Wong-Wah-Chung, P., Wright, S., Wyles, K.J., Young, R., Yurtsever, M., Yurtsever, U., Zada, L., Zamani, N.P., and Zampetti, G.
Published: 2017
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47. New Approaches for the Extraction and Identification of Microplastics From Marine Sediment

Author: Kedzierski, M., Le Tilly, V., Bourseau, P., César, G., Sire, O., and Bruzaud, S.
Published: 2017
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48. Nanofiltration of concentrated and salted tuna cooking juices

Author: Walha, K., Amar, R. Ben, Bourseau, P., and Jaouen, P.
Published: 2009
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49. Impact of ultrafiltration and nanofiltration of an industrial fish protein hydrolysate on its bioactive properties

Author: Picot, L, Martínez Álvarez, Óscar, Bourseau, P., Picot, L, Martínez Álvarez, Óscar, and Bourseau, P.
Abstract: BACKGROUND: Numerous studies have demonstrated that in vitro controlled enzymatic hydrolysis of fish and shellfish proteins leads to bioactive peptides. Ultrafiltration (UF) and/or nanofiltration (NF) can be used to refine hydrolysates and also to fractionate them in order to obtain a peptide population enriched in selected sizes. This study was designed to highlight the impact of controlled UF and NF on the stability of biological activities of an industrial fish protein hydrolysate (FPH) and to understand whether fractionation could improve its content in bioactive peptides. RESULTS: The starting fish protein hydrolysate exhibited a balanced amino acid composition, a reproducible molecular weight (MW) profile, and a low sodium chloride content, allowing the study of its biological activity. Successive fractionation on UF and NF membranes allowed concentration of peptides of selected sizes, without, however, carrying out sharp separations, some MW classesbeingfoundinseveral fractions. Peptides containing Pro, Hyp, Aspand Gluwere concentrated in the UF and NFretentates compared to the unfractionated hydrolysate and UF permeate, respectively. Gastrin/cholecystokinin-likepeptideswerepresent in the starting FPH, UF and NF fractions, but fractionation did not increase their concentration. In contrast, quantification of calcitonin gene-related peptide (CGRP)-like peptides demonstrated an increase in CGRP-like activities in the UF permeate, relative to the starting FPH. The starting hydrolysate also showed a potent antioxidant and radical scavenging activity, and a moderate angiotensin-converting enzyme (ACE)-1 inhibitory activity, which were not increased by UF and NF fractionation. CONCLUSION: Fractionation of an FPH using membrane separation, with a molecular weight cut-off adapted to the peptide composition, may provide an effective means to concentrate CGRP-like peptides and peptides enriched in selected amino acids. The peptide size distribution observed after UF an
Published: 2010

50. Microplastics elutriation from sandy sediments: A granulometric approach.

Author: Kedzierski, Mikaël, Le Tilly, Véronique, Bourseau, Patrick, Bellegou, Hervé, César, Guy, Sire, Olivier, and Bruzaud, Stéphane
Subjects: MARINE sediments, PLASTIC marine debris, SAND, POLYMERS, PARTICLE size distribution
Abstract: Although relatively easy to extract in the marine environment, microplastics are very difficult to recover when they are trapped in sediments. The elutriation column is one of the best tools currently available for extracting plastics from sediment, but with a high sand recovery yield. This study aims to address the following questions: ( i ) is it possible to use a sedimentological approach to limit the sand recovery? ( ii ) does the extraction velocity of the sand and plastic particles vary according to density and granulometry? ( iii ) what is the relative recovery efficiency obtained for dense polymer particles mixed with marine sand? Based on a new granulometric classification, different plastic particle-size fractions are defined. Their extraction velocities are experimentally determined on particles of sediment and different plastics (PA, PVC). The particle recovery experiments indicate that it is possible to extract > 90% of dense plastic particles in cases of negligible sand recovery. [ABSTRACT FROM AUTHOR]
Published: 2016
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