Influence of a swirl motion on the interaction between microalgal cells and environmental medium during ultrafiltration of a culture of Tetraselmis suecica |
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| Authors: | O. Morineau-Thomas P. Legentilhomme P. Jaouen B. Lepine Y. Rince |
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| Affiliation: | (1) GEPEA, Laboratoire de Génie des Procédés Environnement Agroalimentaire ISOMer, Institut des Substances et Organismes de la Mer, UMR MA 100, CRTT, Boulevard de l'Université, BP 406-44602 Saint-Nazaire Cedex, France;(2) Alpha-Biotech, Le Frostidié, 44410 Assérac, France;(3) Laboratoire de Biologie Marine, ISOMer, Institut des Substances et Organismes de la Mer, Faculté des Sciences et Techniques, 2, rue de la Houssinière, BP 92208-44322 Nantes Cedex 3, France |
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| Abstract: | The role of the environmental medium of a marine microalga culture (Tetraselmis suecica) in membrane fouling phenomenon is quantified for two ultrafiltration units: one generating a classical tangential plane flow and another involving a swirling decaying flow induced by a tangential inlet. Compared to the plane unit, the swirling configuration increases the performances of the ultrafiltration process (augmentation of 20% in terms of limiting flux). Interactions between the culture medium and cells depend on the module design. Furthermore, experiments emphasize the significant role of the particles whatever the module design: more than 70% of the total hydraulic resistance could be due to the microalgal cells, while about 30% of membrane fouling is relevant to soluble materials. |
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| Keywords: | environmental medium membrane fouling microalga swirl flow Tetraselmis suecica |
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