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Multi-scale analysis of hypochlorite induced PES/PVP ultrafiltration membranes degradation

Pellegrin, Bastien and Prulho, Romain and Rivaton, Agnès and Thérias, Sandrine and Gardette, Jean-Luc and Gaudichet-Maurin, Emmanuelle and Causserand, Christel Multi-scale analysis of hypochlorite induced PES/PVP ultrafiltration membranes degradation. (2013) Journal of Membrane Science, vol. 447. pp. 287-296. ISSN 0376-7388

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Official URL: http://dx.doi.org/10.1016/j.memsci.2013.07.026

Abstract

In drinking water production plants, the use of oxidants such as sodium hypochlorite during in-place cleanings may impair the membrane integrity and radically impact the ultrafiltration process efficiency, leading to potential contamination of the permeate water with pathogens. This study investigates the effects of hypochlorite exposure on the properties of a commercially available UF hollow fiber. Mechanical performances and water permeability appeared to be greatly affected by the contact with hypochlorite. Monitoring them olecular changes by X-rayphoto electron spectroscopy (XPS), attenuated total reflectance infraredspectroscopy (ATR-IR), size exclusion chromatography (SEC) and VITA-mode atomic forcemicroscopy (VITA-AFM) revealed high stability of the main polymer constituting the membrane (i.e. polyethersulfone (PES)) and very high reactivity of the additive (i.e. poly (N-vinyl pyrrolidone (PVP)) towards immersion in aqueous sodium hypochlorite solution with maximal reaction rate for neutral to slightly basic pH. Correlation of those results unexpectedly leads to the conclusion that the over all membrane properties changes are governed by the additive fate.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The original PDF can be found at http://www.sciencedirect.com/science/article/pii/S0376738813005929
HAL Id:hal-00904294
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS (FRANCE)
Other partners > Université Blaise Pascal - UBP (FRANCE)
Other partners > Veolia Environnement (FRANCE)
Laboratory name:
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Deposited By: Vincent GERBAUD
Deposited On:14 Nov 2013 10:24

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