Dehydration of tetrahydrofuran (THF) by pervaporation using crosslinked copolymer membranes

S. Ray, S. K. Ray

Research output: Contribution to journalArticlepeer-review

25 Scopus citations

Abstract

Tetrahydrofuran (THF) is an important volatile intermediate used in chemical industries and its separation from water is encountered in many application. Three different copolymers of acrylamide with increasing amount of 2-hydroxyethyl methacrylate (HEMA), i.e. PAMHEMA-1, -2 and -3 were synthesized and the crosslinked (gelled) copolymer membranes made from these sol copolymers were used for pervaporative dehydration of THF over the concentration range of 0-14 wt% water in feed. These extremely hydrophilic gel copolymer membranes were found to be highly water selective in both sorption and diffusion through the membranes. Water flux was found to decrease with increase in degree of crosslinking from PAMHEMA-1 to 3 copolymer membranes. Among the three membranes PAMHEMA-1 membrane showed very high water selectivity (216) and reasonable flux (570 gm/m2 h for 0.56 wt% of water in feed at 50 °C temperature). Water was also found to have a strong positive coupling effect on THF permeation. The membranes were found to show both sorption as well as diffusion selectivity for water.

Original languageEnglish (US)
Pages (from-to)1620-1630
Number of pages11
JournalChemical Engineering and Processing: Process Intensification
Volume47
Issue number9-10
DOIs
StatePublished - 2008
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Energy Engineering and Power Technology
  • Industrial and Manufacturing Engineering

Keywords

  • Coupling effect
  • Diffusion selectivity
  • Pervaporation
  • Selectivity
  • Sol-gel copolymer

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