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FTIR mapping as a simple and powerful approach to study membrane coating and fouling

Benavente, Lucia and Coetsier, Clémence and Venault, Antoine and Chang, Yung and Causserand, Christel and Bacchin, Patrice and Aimar, Pierre FTIR mapping as a simple and powerful approach to study membrane coating and fouling. (2016) Journal of Membrane Science, vol. 520. pp. 477-489. ISSN 0376-7388

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Official URL: http://dx.doi.org/10.1016/j.memsci.2016.07.061

Abstract

The purpose of this work is to apply FTIR mapping to the analysis of the coating and fouling behaviour of PVDF membranes coated with two different types of PS-PEGMA copolymers – diblock and random. The coating conditions involve the variation of coating solution concentration and of coating time. We have carried out adsorption experiments with BSA as the foulant, and also filtration experiments. The analysis of the results is mainly performed by image analysis of the mapped surfaces with two approaches: taking the average grey value/peak height of the whole surface for the coating and foulant signals, and by defining coating/fouling levels as an initial approach to analyse heterogeneity. Our results show that there is an heterogeneous distribution of the coating and fouling layers on the membrane surface at a millimetre scale. Moreover, the diblock copolymer has a slightly better anti-adsorption performance than the random one. Coating conditions should be carefully chosen and conclusions regarding the anti-fouling properties of the membranes should be drawn by taking into account both adsorption and filtration tests. All in all, FTIR mapping is a technique that should be taken into account for the study of fouling phenomena.

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
HAL Id:hal-01417896
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 > Chung Yuan Christian University (TAIWAN)
Laboratory name:
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Deposited By: Clemence Coetsier
Deposited On:02 Sep 2016 10:26

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