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Cross-flow microfiltration of wine: Effect of colloids on critical fouling conditions

El Rayess, Youssef and Albasi, Claire and Bacchin, Patrice and Taillandier, Patricia and Mietton-Peuchot, Martine and Devatine, Audrey Cross-flow microfiltration of wine: Effect of colloids on critical fouling conditions. (2011) Journal of Membrane Science, vol. 382 (n° 1-2). pp. 1-19. ISSN 0376-7388

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Official URL: http://dx.doi.org/10.1016/j.memsci.2011.08.008

Abstract

Critical fouling conditions were studied during wine cross-flow microfiltration using a multichannel ceramic membrane (0.2 micro m). The aim was to determine critical operating conditions in order to limit fouling caused by wine colloids (tannins, pectin and mannoproteins) and enhance process performances. The method used is a square wave filtration based on the determination of the reversibility and irreversibility of fouling. Filtrations were performed with filtered red wine (FW) added with different concentrations of colloids. Considering FW, critical flux for irreversibility was beyond the studied range of pressure (≥1.4×10−4 m/s). No clear critical flux could be determined for any of the tested molecules in the studied range of pressure. On the other hand, an upper limit of fluxes range has been identified (below which critical flux could be found). Irreversible fouling always takes place from the beginning of the filtrations and even at low pressures. For FW containing 0.2 g/l mannoprotein and 0.5 g/l pectin, a loss of average fluxes is observed beyond a given limit of transmembrane pressure. This fact was attributed to the compaction of a gel layer. Finally, a criterion (Rif/Rm ≤ 1) has been suggested to determine the so-called “threshold flux” below it, fouling remains acceptable.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com. The original PDF of the article can be found at Journal of Membrane Science website : http://www.sciencedirect.com/science/journal/03767388
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
French research institutions > Institut National de la Recherche Agronomique - INRA
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Other partners > Université de Bordeaux 2 - Victor Segalen (FRANCE)
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Deposited By: Patrice Bacchin
Deposited On:12 Nov 2012 10:46

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