Dehydration of industrial isopropanol (IPA) waste by pervaporation and vapor permeation membranes

Jian Zuo, Dan Hua, Verma Maricar, Yee Kang Ong, Tai Shung Chung*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Scopus citations


We have investigated the feasibility of using polymeric membranes for the dehydration of industrial isopropanol (IPA) waste from MSD International GmbH by pervaporation and vapor permeation in this study. Four types of membranes were employed. They were (1) thin-film composite hollow fiber consisting of a polyamide selective layer and a polyetherimide Ultem® substrate, (2) dual-layer hollow fiber comprising an outer cellulose triacetate (CTA) layer and an inner Ultem® substrate, and (3) two commercially available Sulzer flat-sheet membranes. The dual-layer hollow fiber shows the most balanced separation performance in terms of flux and separation factor for the dehydration of industrial IPA waste because it has a porous substructure and a thin dense selective layer. Under vapor permeation tests at 125 °C, it has a flux of 13.41 kg/m2 h and a separation factor of 1332. This study demonstrates the great potential of using polymeric membranes to dehydrate industrial IPA waste for pharmaceutical and electronic industries.

Original languageEnglish (US)
Article number45086
JournalJournal of Applied Polymer Science
Issue number24
StatePublished - Jun 20 2018
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2017 Wiley Periodicals, Inc.


  • fibers
  • membranes
  • polyamides
  • polyimides

ASJC Scopus subject areas

  • General Chemistry
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry


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