Journal
SEPARATION SCIENCE AND TECHNOLOGY
Volume 54, Issue 3, Pages 329-342Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/01496395.2018.1503306
Keywords
Pervaporation; ethanol-water; C8H4F13-PDMS membrane; molecular cross-linker
Funding
- Council of Scientific and Industrial Research, India [9/1/CS/CSMCRI (1)/2012-13-PPD]
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C8H4F13-polydimethylsiloxane (PDMS) membranes prepared by cross-linking PDMS with 5-50 wt.% trichloro(perfluoro-octyl)silane were investigated. The membrane with 17 wt.% cross-linker showed excellent ethanol/water separation factor of 18 with average flux of 180 g m(-2) h(-1), while the membrane with 5 wt.% cross-linker exhibited maximum flux of 190 g m(-2) h(-1) and the separation factor of 16 at 345K. The activation energy of ethanol permeation and water permeation was found in the ranges of 29 and 25 kJ/mole, respectively, suggesting that this membrane is the most selective for bioethanol recovery than other reported PDMS membranes.
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