Pervaporative enrichment of 2,3-butanediol from its mixture with 1-butanol using a polydimethylsiloxane and ZSM-5 mixed matrix membrane : effects of ethanol as a by-product

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DOIResolve DOI: http://doi.org/10.1002/cjce.20698
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TypeArticle
Journal titleCanadian Journal of Chemical Engineering
Volume90
Issue6
Pages15621569; # of pages: 8
Subjectpervaporation; coupled transport; mixed matrix membrane; 2,3-butandiol; ethanol
AbstractA ZSM-5 filled polydimethylsiloxane membrane with 44.4 wt.% zeolite loading was used in the pervaporative removal of 1-butanol from its mixtures with 1-butanol. A small quantity of ethanol was added to the feed as a by-product to test the response of the membrane. It was found that the permeation behaviour of other feed components was changed and membrane selectivity decreased. This change was attributed to the frequently-observed inter-component coupled transport in multi-component feed systems. The impact of ethanol on recovery of 2,3-butanediol was evaluated using a simulated continuous operation, which enriched 2,3-butanediol to 99.5 wt.% from a feed containing 5 wt.% 2,3-butanediol and less than 1.0 wt.% ethanol. It was observed that membrane selectivity improves as ethanol concentration decreases in the stream due to its preferential removal. The final recovery of 2,3-butanediol was not significantly reduced as the concentration of ethanol was below 1.0 wt.%.
Publication date
PublisherWiley
LanguageEnglish
AffiliationNRC Institute for Chemical Process and Environmental Technology; National Research Council Canada
Peer reviewedYes
NRC number52895
NPARC number20318150
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Record identifier4ca5fd20-a2eb-431e-9d77-825894075764
Record created2012-07-19
Record modified2016-05-09
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