Chinese Journal of Applied Chemistry ›› 1991, Vol. 0 ›› Issue (1): 55-59.

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SEPARATION OF H2O/EtOH MIXTURE BY PERVAPORATION:THE RELATIONSHIP BETWEEN THE SELECTIVE SORPTION AND PERVAPORATION

Zhang Yuzhong, Zhang Keda, Xu Jiping   

  1. Changchun Institute of Applied Chemistry, Academia Sinica, Changchun 130022
  • Received:1989-11-15 Revised:1990-04-28 Published:1991-02-10 Online:1991-02-10

Abstract: The swelling process of the heat, alkali-, and radiation crosslinked PVA membraneswas investigated.The pervaporation process was divided into two parts: selective sorptionand selective diffusion.The contribution of the two parts respectively into the pervaporationwas evaluated with the selective sorption factor and the selective diffusion factor.

Key words: pervaporation, membranes, separation of ethanol and water