Mass transport in the membrane air-stripping process using microporous polypropylene hollow fibers: effect of toluene in aqueous feed

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DOIResolve DOI: http://doi.org/10.1016/S0376-7388(02)00320-4
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TypeArticle
Journal titleJournal of Membrane Science
Volume209
IssueNovember 1
Pages207219; # of pages: 13
SubjectMembrane air-stripping; Organic separations; Water treatment; Microporous membranes; Partitioning
AbstractMembrane air-stripping (MAS), using microporous polypropylene hollow fiber membrane modules, is one of the most promising processes for removal and recovery of volatile organic compounds (VOCs) from water/wastewater. In this work, aqueous feed containing VOCs was allowed to cross-flow on the shell side, whereas air flowed through the lumen of fibers. Chloroform, toluene and their mixture were used as model VOCs. The effects of presence of toluene alone and in mixture with chloroform in aqueous feed on the mass transport of VOCs through the membrane are reported. It was found that Henry’s law constants (HLCs) for toluene as well as chloroform did not change significantly in mixtures. The tests showed that higher toluene adsorption than that of chloroform on the fibers. It appeared that toluene blocked the pores partially, due to its strong affinity for the membrane material, resulting in substantially reduced mass transport.
Publication date
LanguageEnglish
AffiliationNRC Institute for Chemical Process and Environmental Technology (ICPET-ITPCE); National Research Council Canada
Access conditionavailable
unlimited
public
Peer reviewedYes
NRC number44383
NPARC number12338489
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Record identifier6b418f30-efcc-49cb-85d4-d3d6136657c7
Record created2009-09-10
Record modified2016-05-09
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