Small-Angle X-Ray Scattering (SAXS) analyses of build-up, relaxation and erosion of casein micelles fouling layer during cross-flowultrafiltration
| Autor: | Doudies, Floriane, Loginov, Maksym, Hengl, N., Pignon, F., Leconte, Nadine, Lambrouin, Fabienne, Perez, J., GRANGER-DELACROIX, Manon, BELNA, Maellis, Gesan-Guiziou, Genevieve |
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| Přispěvatelé: | Science et Technologie du Lait et de l'Oeuf (STLO), Institut National de la Recherche Agronomique (INRA)-AGROCAMPUS OUEST, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Laboratoire Rhéologie et Procédés (LRP), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Beamline SWING, Synchrotron SOLEIL (SSOLEIL), Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Université Grenoble Alpes (UGA) |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Membrane fouling
casein micelles technologie laitière encrassement protéique micelle de caséine SAXS protéine de lait ultrafiltration tangentielle [SDV.IDA]Life Sciences [q-bio]/Food engineering operating conditions dependence radiographie aux rayons x [SDV.AEN]Life Sciences [q-bio]/Food and Nutrition cross-flow ultrafiltration procédé de séparation |
| Zdroj: | European Conference on Fluid-Particle Separation European Conference on Fluid-Particle Separation, Oct 2018, Lyon, France |
| Popis: | The aim of this work is to understand the influence of operating conditions (time, transmembrane pressure(TMP), cross-flow velocity (v)) on the casein micelles fouling layer properties (build-up, sol-gel transition andreversibility behaviour during TMP relaxation) during cross-flow filtration. Small-Angle X-Ray Scattering(SAXS) has been coupled to cross-flow ultrafiltration to determine the behaviour of casein micellesconcentrated layers at the membrane surface. Concentration profiles have been deduced from the scatteringintensities registered in-situ in the course of the cross-flow ultrafiltration of casein micelles dispersions. SAXSand filtration results for a reference experiment (TMP = 110 kPa, v = 0.03 m∙s−1, 2h30 of filtration, 25°C)show the formation of a thick fouling layer of 275 μm and reaching 307 g∙L−1 at the membrane surface, whichis above the sol-gel transition of casein micelles (≈180 g∙L−1). Furthermore, results show some reversibility ofthe outer fraction of fouling layer and irreversibility of its fraction close to the membrane surface. Thoseresults are important for understanding the concentrated layer build-up of casein micelles during cross-flowultrafiltration but more originally the TMP relaxation behavior of casein micelles fouling layer linked todifferent operating conditions |
| Databáze: | OpenAIRE |
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