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Article: Direct microscopic observation of forward osmosis membrane fouling

TitleDirect microscopic observation of forward osmosis membrane fouling
Authors
Issue Date2010
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/est
Citation
Environmental Science And Technology, 2010, v. 44 n. 18, p. 7102-7109 How to Cite?
AbstractThis study describes the application of a noninvasive direct microscopic observation method for characterizing fouling of a forward osmosis (FO) membrane. The effect of the draw solution concentration, membrane orientation, and feed spacer on FO fouling was systematically investigated in a cross-flow setup using latex particles as model foulant in the feedwater. Higher draw solution (DS) concentrations (and thus increased flux levels) resulted in dramatic increase in the surface coverage by latex particles, suggesting that the critical flux concept might be applicable even for the osmotically driven FO process. Under identical draw solution concentrations, the active-layer-facing- the-feed-solution orientation (AL-FS) experienced significantly less fouling compared to the alternative orientation. This may be explained by the lower water flux in AL-FS, which is consistent with the critical flux concept. The use of a feed spacer not only dramatically enhanced the initial flux of the FO membrane, but also significantly improved the flux stability during FO fouling. Despite such beneficial effects of using the feed spacer, a significant amount of particle accumulation was found near the spacer filament, suggesting further opportunities for improved spacer design. To the best of the authorsâ knowledge, this is the first direct microscopic observation study on FO fouling. © 2010 American Chemical Society.
Persistent Identifierhttp://hdl.handle.net/10722/185391
ISSN
2015 Impact Factor: 5.393
2015 SCImago Journal Rankings: 2.664
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorWang, Yen_US
dc.contributor.authorWicaksana, Fen_US
dc.contributor.authorTang, CYen_US
dc.contributor.authorFane, AGen_US
dc.date.accessioned2013-07-30T07:32:09Z-
dc.date.available2013-07-30T07:32:09Z-
dc.date.issued2010en_US
dc.identifier.citationEnvironmental Science And Technology, 2010, v. 44 n. 18, p. 7102-7109en_US
dc.identifier.issn0013-936Xen_US
dc.identifier.urihttp://hdl.handle.net/10722/185391-
dc.description.abstractThis study describes the application of a noninvasive direct microscopic observation method for characterizing fouling of a forward osmosis (FO) membrane. The effect of the draw solution concentration, membrane orientation, and feed spacer on FO fouling was systematically investigated in a cross-flow setup using latex particles as model foulant in the feedwater. Higher draw solution (DS) concentrations (and thus increased flux levels) resulted in dramatic increase in the surface coverage by latex particles, suggesting that the critical flux concept might be applicable even for the osmotically driven FO process. Under identical draw solution concentrations, the active-layer-facing- the-feed-solution orientation (AL-FS) experienced significantly less fouling compared to the alternative orientation. This may be explained by the lower water flux in AL-FS, which is consistent with the critical flux concept. The use of a feed spacer not only dramatically enhanced the initial flux of the FO membrane, but also significantly improved the flux stability during FO fouling. Despite such beneficial effects of using the feed spacer, a significant amount of particle accumulation was found near the spacer filament, suggesting further opportunities for improved spacer design. To the best of the authorsâ knowledge, this is the first direct microscopic observation study on FO fouling. © 2010 American Chemical Society.en_US
dc.languageengen_US
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/esten_US
dc.relation.ispartofEnvironmental Science and Technologyen_US
dc.subject.meshBiofoulingen_US
dc.subject.meshMembranes, Artificialen_US
dc.subject.meshMicroscopy - Methodsen_US
dc.subject.meshMicroscopy, Electron, Scanningen_US
dc.subject.meshOsmosisen_US
dc.subject.meshSolutionsen_US
dc.subject.meshTime Factorsen_US
dc.titleDirect microscopic observation of forward osmosis membrane foulingen_US
dc.typeArticleen_US
dc.identifier.emailTang, CY: tangc@hku.hken_US
dc.identifier.authorityTang, CY=rp01765en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1021/es101966men_US
dc.identifier.pmid20735033-
dc.identifier.scopuseid_2-s2.0-77956533740en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77956533740&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume44en_US
dc.identifier.issue18en_US
dc.identifier.spage7102en_US
dc.identifier.epage7109en_US
dc.identifier.isiWOS:000281629800033-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridWang, Y=35076853300en_US
dc.identifier.scopusauthoridWicaksana, F=6507042116en_US
dc.identifier.scopusauthoridTang, CY=35489259800en_US
dc.identifier.scopusauthoridFane, AG=35593963600en_US

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