Title: Modelling of the retention of uncharged molecules with nanofiltration
Authors: Van der Bruggen, Bart ×
Vandecasteele, Carlo #
Issue Date: Mar-2002
Publisher: Pergamon-elsevier science ltd
Series Title: Water research vol:36 issue:5 pages:1360-1368
Abstract: In this paper, a model is developed for the retention of organic molecules with a given nanofiltration membrane at different pressures as a function of the molecular weight. The Spiegler-Kedem transport equations were used to derive the reflection coefficient, the maximal retention that would theoretically be obtained at infinite transmembrane pressure, from experimental retention values for a large set of molecules with the effective diameter of the molecule as a size parameter. Secondly, the pore size distribution of the membrane is derived from the experimental reflection coefficients. This allows to calculate the reflection coefficient for a molecule with a given effective diameter. Since this parameter is not readily available, a correlation between the effective diameter and the molecular weight has been established and introduced in the model equations.
ISSN: 0043-1354
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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