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Academic literature on the topic 'Évaporation osmotique'
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Dissertations / Theses on the topic "Évaporation osmotique"
Courel, Mathilde. "Etude des transferts de matière en évaporation osmotique : application à la concentration des jus de fruits." Montpellier 2, 1999. http://www.theses.fr/1999MON20032.
Full textAli, Fadi. "Etude des transferts de composes d'arome au cours de la concentration par evaporation osmotique." Massy, ENSIA, 2004. http://www.theses.fr/2004EIAA0137.
Full textBenhabiles, Ali. "Étude d'un nouveau procédé de concentration de solutions thermosensibles : l'évaporation osmotique : optimisation et application à la concentration de jus de pomme." Compiègne, 1998. http://www.theses.fr/1998COMP1135.
Full textRomero, Figueroa Julio. "Etude des transferts sur des systèmes à membrane non-conventionnels : cas du procédé d'évaporation osmotique et de la perméation de fluides supercritiques." Montpellier 2, 2002. http://www.theses.fr/2002MON20135.
Full textGabino, Roman Francisco Javier. "Utisation des membranes hydrophobes pour la concentration de jus de fruits par évaporation osmotique : étude du procédé et de son impact sur la flore endogène des jus." Montpellier 2, 2007. http://www.theses.fr/2007MON20031.
Full textThis study concerns the use of hydrophobic ceramic membranes for the concentration of the fruit juice by osmotic evaporation, as well as on the impact of the process on the endogenous flora of the juice. After having characterized the membranes and studied the impact of the cleaning on the hydrophobicity of the surface of membranes, it was possible to define a procedure of cleaning adapted to their use in food industry. The study of the performances of the process in term of evaporation flux according to the experimental conditions showed that the main resistance for the mass transfer is localized at the level of the membrane itself. Finally, even if no growth is observed in the solutions of superior concentration in 60g. 100g-1 ESS, the viability of microorganisms is not affected by the process
Ziane, Nadia. "Outils microfluidiques pour l’exploration de diagrammes de phase : de la pervaporation à la microdialyse." Thesis, Bordeaux, 2015. http://www.theses.fr/2015BORD0147/document.
Full textThis work deals with the technological development of miniaturized tools for theexploration of the phase diagram of complex fluids (colloidal dispersions, solutions ofpolymers or surfactants, etc). The microfluidic tools we elaborated make it possibleto determine phase diagrams of a series of formulations of complex fluids by consumingonly minute amounts of samples. These devices exploit two types of membraneprocesses to concentrate the chemical species : pervaporation (solvent evaporationthrough a dense membrane) and dialysis (osmotic exchanges through a membrane).Concerning the case of pervaporation, we demonstrated theoretically and experimentallythat a specific microfluidic design exists for which concentration fields of chemicalspecies remain spatially homogeneous along the kinetic path followed withinthe phase diagram. Then, it enables to obtain phase diagrams of multi-componentsmixtures from molecular compounds up to colloids, at the nanolitre scale. We reporta study concerning the understanding of the drying process of commercial silica nanoparticlesusing a dedicated microfluidic experiment involving pervaporation. Wepresent the kinetics of the concentration of the particles within the channel up to theformation of a dense colloidal packed bed which invades the channel at a controlledrate. We developed an original microfluidic tool integrating a dialysis membranewhich makes it possible to control osmotic exchanges at the nanoliter scale. We reportthe protocol of microfabrication of this chip and its specific geometry.We presentpreliminary results showing that this tool can be used to measure osmotic pressures ofcolloidal suspensions