Salt transport in polymeric pervaporation membrane

Dihua Wu; Aoran Gao; Xianshe Feng

doi:10.1016/j.cjche.2019.11.009

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Salt transport in polymeric pervaporation membrane

Separation Science and Engineering | Updated：2026-01-06

- Salt transport in polymeric pervaporation membrane
- Chinese Journal of Chemical Engineering Vol. 28, Issue 3, Pages: 758-765(2020)
- Affiliations：
  
  1. College of Materials and Environmental Engineering, Hangzhou Dianzi University, Xiasha Higher Education Zone,Hangzhou,China,310018
  2. Department of Chemical Engineering, University of Waterloo, 200 University Avenue West, Waterloo N2L 3G1, Ontario,Canada
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2019.11.009
  CLC：
- Published：2020
- Accepted：
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Dihua Wu, Aoran Gao, Xianshe Feng. Salt transport in polymeric pervaporation membrane[J]. Chinese Journal of Chemical Engineering, 2020, 28(3): 758-765.
DOI：

Dihua Wu, Aoran Gao, Xianshe Feng. Salt transport in polymeric pervaporation membrane[J]. Chinese Journal of Chemical Engineering, 2020, 28(3): 758-765. DOI： 10.1016/j.cjche.2019.11.009.

摘要

Abstract

The salt transport in a PEBA membrane used in pervaporative desalination was studied. The concentration profile of salt in the membrane during pervaporation was investigated experimentally using a multilayer membrane. The salt was found to be sorbed in the membrane but was not removed during the pervaporative desalination process

and the salt concentration in the membrane varied linearly with position. High purity water was obtained as the permeate as long as the permeate side was kept dry under vacuum. The accumulated salt uptake in the membrane follows the order of MgCl

NaCl Na

. The solubility of salt in the membrane follows the order of MgCl

NaCl Na

. Both the permeability and diffusivity of salt in the membrane follow the order of NaCl MgCl

. The permeability of salt in the membrane is not influenced by the feed salt concentration. It is mainly determined by the diffusion coefficients.

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