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Slow colloidal aggregation and membrane fouling

Aimar, Pierre and Bacchin, Patrice Slow colloidal aggregation and membrane fouling. (2010) Journal of Membrane Science, vol. 3 (n° 1-2). pp. 70-76. ISSN 0376-7388

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Official URL: http://dx.doi.org/10.1016/j.memsci.2010.05.001

Abstract

We observed that the concept of critical flux, although established on physical bases, does not describe all typical fouling situations found in membrane filtration. We especially focus on the slow flux decline that is observed in many industrial membrane applications, and that has found several types of explanations that we briefly discuss. In order to get a better understanding of this situation, we have considered the orders of magnitude of the slow aggregation kinetics that are expected to happen within a boundary layer, on an ultrafiltration or microfiltration membrane in operation. The results help to understand that whereas the critical flux is limiting cross-flow filtration of stable colloids, it should be combined to kinetics aspects of slow aggregation in cases of colloids of intermediate stability (metastable). We discuss some consequences on the design and operation of processes using membrane filtration.

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.elsevier.com/wps/find/journaldescription.cws_home/502692/description#description
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
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Deposited By: Patrice Bacchin
Deposited On:28 Jul 2010 09:11

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