Removal and recovery of solvents from fermentation broth by pervaporation using liquid membrane

Atsawin Thongsukmak, Kamalesh K. Sirkar

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations


Liquid membranes can achieve much higher selectivity for some small molecules such as acetic acid, ethanol, butanol, etc. Liquid membranes immobilized in novel porous hollow fiber-based membranes as a support for the pervaporation process to increase the VOC selectivity and membrane stability were studied. Volatile fermentation byproducts such as acetone, butanol and ethanol present in low concentrations in synthetic aqueous solutions were separated by novel liquid membranes. The liquid membrane with model solutions (containing acetone-butanol-ethanol (ABE)) and a filtered solution from a fermentation broth (from ABE fermentation) were tested by the pervaporation process. Very high selectivities for the solvents were obtained in the permeate especially at > 50°C. The selectivities of butanol, acetone, and ethanol achieved were 275, 220, and 80, respectively, with 11, 5, and 1.2 g/sq m-hr for the mass fluxes of butanol, acetone, and ethanol, respectively, at 54°C for a feed solution containing 1.5 wt % butanol, 0.8 wt % acetone, and 0.5 wt % ethanol. This is an abstract of a paper presented at the AIChE Annual Meeting (Salt Lake, UT 11/4-9/2007).

Original languageEnglish (US)
Title of host publication2007 AIChE Annual Meeting
StatePublished - 2007
Event2007 AIChE Annual Meeting - Salt Lake City, UT, United States
Duration: Nov 4 2007Nov 9 2007

Publication series

Name2007 AIChE Annual Meeting


Other2007 AIChE Annual Meeting
Country/TerritoryUnited States
CitySalt Lake City, UT

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • General Chemical Engineering
  • Bioengineering
  • Safety, Risk, Reliability and Quality


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