Title: Modelling of solute transport in non-aqueous nanofiltration
Authors: Geens, Jeroen ×
Boussu, Katleen
Vandecasteele, Carlo
Van der Bruggen, Bart #
Issue Date: Sep-2006
Publisher: Elsevier science bv
Series Title: Journal of membrane science vol:281 issue:1-2 pages:139-148
Abstract: This work presents a new approach for modelling of transport of small organic components in nanofiltration of organic solvents. The solute rejection in non-aqueous nanofiltration is affected by a number of membrane-solvent-component interactions, which must be incorporated in a generalised transport model. Since measuring or calculating membrane-solvent-component interactions is difficult, a simple empirical approach is adopted to model the data based on a pore-flow formalism. Previous work showed that solute transport in non-aqueous NF is mainly dominated by convection, but transport models for pore flow, available in the literature, only consider aqueous feed streams. In this article, solvent dependency was implemented in these models in terms of effective pore and solute diameters. This approach was applied on four literature models (the SHP-model, the Ferry model, the Verniory model and the lognormal model). Descriptive modelling of the experimental rejection data of different reference components in methanol, ethanol, acetone and ethyl acetate resulted in the identification of unknown membrane characteristics (pore size or pore size distribution), clearly confirming the solvent dependence of these parameters. This effect was observed for both polymeric and ceramic NF-membranes.
ISSN: 0376-7388
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Process Engineering for Sustainable Systems Section
× corresponding author
# (joint) last author

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