Pervaporation study of water and tert-butanol mixtures

Wei Fen Guo, Tai Shung Chung*, Takeshi Matsuura, Rong Wang, Ye Liu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

41 Scopus citations

Abstract

The permeation behavior of water/tert-butanol mixture through Sulzer Pervap2510 hydrophilic poly(vinyl alcohol) membranes was investigated and the effects of feed composition and temperature on separation efficiency of the membranes were studied. The pervaporation experiments were carried out with feed water content varying from 0 to 20 wt% according to the existing industrial needs and with the feed temperature from 60 to 100°C. Over this range, both water flux and separation factor increased with increasing water content and feed temperature. These phenomena may be attributed to (1) the strong interaction between water and the membrane, (2) the decoupling effect of the permeants and the membrane at elevated temperatures, and (3) the steric hindrance effect of branch chain alcohol. The permeability ratio (the ideal separation factor) of water to tert-butanol across the membrane was calculated and found to hollow the same relationship with increasing temperature and water content. Both fluxand separation factor obtained from the Pervap2510 membrane in this study were much higher than previous reported values, possible causes for which were analyzed.

Original languageEnglish (US)
Pages (from-to)4082-4090
Number of pages9
JournalJournal of Applied Polymer Science
Volume91
Issue number6
StatePublished - Mar 15 2004
Externally publishedYes

Keywords

  • Chain
  • Dehydration
  • Membranes
  • Pervaporation
  • Water/tert-butanol mixture

ASJC Scopus subject areas

  • Polymers and Plastics

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