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Improvement of a method for the characterization of ultrafiltration membranes by measurements of tracers retention

Causserand, Christel and Rouaix, Sandrine and Akbari, A and Aimar, Pierre Improvement of a method for the characterization of ultrafiltration membranes by measurements of tracers retention. (2004) Journal of Membrane Science, vol. 2 (n° 1-2). pp. 177-190. ISSN 0376-7388

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Official URL: http://dx.doi.org/10.1016/j.memsci.2004.04.003

Abstract

The aim of this study is to improve protocols for assessing accurate characteristic retention curve and cut-off of membranes, thus enabling the manufacture and performance of the membrane to be monitored. Different data treatments are considered in order to determine membrane retention for fractions of tracer filtered (PEGs in the molar mass range of 1–100 kg mol−1). In the most advanced method of treatment, the observed retention is expressed as a combination of solute transfer coefficients in the boundary layer (kBL) and porous structure (kpore), and the asymptotic retention (Rinf ), which is an intrinsic characteristic of the membrane to solute as it is independent of operating conditions. The developed method has proved to be accurate and reproducible in two cases: (i) monitoring of UF membrane integrity during accelerated aging; (ii) for quantification of cut-off change due to UF membrane modification by UV grafting. We propose a simplified procedure that allows a reduction in experimental workload, without loss of sensitivity, for the most advanced method.

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: 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
Laboratory name:
Laboratoire de Génie Chimique - LGC (Toulouse, France) - Génie des Interfaces & Milieux Divisés (GIMD)
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Deposited By:Hélène Dubernard

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