Coupled effect of the membrane properties and concentration polarization in pervaporation: unified mass transport model

摘要

The effect of the concentration boundary layer on the membrane separation is well known and intensively discussed in the literature. In most of these studies, the effect of the membrane layer on the separation is missing. Recently, some papers have been published which take into account both the concentration polarization layer and the membrane layer on the membrane separation by means of pervaporation. These papers use mostly the resistance-in-series model and try to incorporate the effect of the boundary layer's Peclet number, as well. These models do not make possible the direct calculation of the separation characteristics, e.g. the enrichment or the polarization modulus.