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  4. Pervaporation From membrane materials to membrane processes and their industrial applications

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Article | REF: J2820 V2

Pervaporation From membrane materials to membrane processes and their industrial applications

Authors: Christophe CASTEL, Éric FAVRE, Sabine RODE, Denis ROIZARD, Émilie CARRETIER, Carole ARNAL-HÉRAULT, Robert CLÉMENT, Anne JONQUIÈRES *

Publication date: September 10, 2020 | Lire en français

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    4. Process limitations

    4.1 Concentration polarization

    The extraction of minority compounds in contact with a pervaporation membrane can be penalized by the existence of a boundary layer in which the contents of preferentially transferred species are lowered, relative to the composition of the homogeneous liquid charge. This lowering of the local content, also known as concentration polarization, generally results in a decrease in material flow and, above all, in a reduction in the membrane's apparent selectivity.

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