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Article: Removal of boron and arsenic by forward osmosis membrane: Influence of membrane orientation and organic fouling

TitleRemoval of boron and arsenic by forward osmosis membrane: Influence of membrane orientation and organic fouling
Authors
KeywordsForward Osmosis (Fo)
Internal Concentration Polarization (Icp)
Organic Fouling
Rejection
Trace Contaminants
Issue Date2012
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/memsci
Citation
Journal Of Membrane Science, 2012, v. 389, p. 182-187 How to Cite?
AbstractThe potential application of forward osmosis (FO) membranes in water treatment and desalination requires an improved understanding of the factors that govern the rejection of trace contaminants. This study investigated the influence of membrane orientation and organic fouling on the performance of FO membrane in removing boron and arsenic. Results of laboratory-scale crossflow membrane filtration experiments showed that the inorganic contaminants were rejected at a much lower rate when membrane active layer was facing draw solution (AL-DS) compared to the active layer-facing feed water (AL-FW) orientation, as a result of the more severe concentrative internal concentration polarization (ICP) in the latter orientation. The difference in boron rejection between the two membrane orientations was greater due to its higher permeability through the FO membrane. In the AL-FW orientation, the formation of an alginate fouling layer on the membrane surface could enhance the sieving effect and thus improve the rejection of arsenious acid with relatively larger molecular size. In the AL-DS orientation, alginate fouling in the membrane support layer had adverse effect on boron rejection at water flux below 4.2μm/s (15.3L/m 2/h), attributed to the foulant enhanced concentrative ICP effect. Findings have important implications in the performance and applicability of FO membrane processes. © 2011 Elsevier B.V.
Persistent Identifierhttp://hdl.handle.net/10722/185411
ISSN
2015 Impact Factor: 5.557
2015 SCImago Journal Rankings: 2.042
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorJin, Xen_US
dc.contributor.authorShe, Qen_US
dc.contributor.authorAng, Xen_US
dc.contributor.authorTang, CYen_US
dc.date.accessioned2013-07-30T07:32:20Z-
dc.date.available2013-07-30T07:32:20Z-
dc.date.issued2012en_US
dc.identifier.citationJournal Of Membrane Science, 2012, v. 389, p. 182-187en_US
dc.identifier.issn0376-7388en_US
dc.identifier.urihttp://hdl.handle.net/10722/185411-
dc.description.abstractThe potential application of forward osmosis (FO) membranes in water treatment and desalination requires an improved understanding of the factors that govern the rejection of trace contaminants. This study investigated the influence of membrane orientation and organic fouling on the performance of FO membrane in removing boron and arsenic. Results of laboratory-scale crossflow membrane filtration experiments showed that the inorganic contaminants were rejected at a much lower rate when membrane active layer was facing draw solution (AL-DS) compared to the active layer-facing feed water (AL-FW) orientation, as a result of the more severe concentrative internal concentration polarization (ICP) in the latter orientation. The difference in boron rejection between the two membrane orientations was greater due to its higher permeability through the FO membrane. In the AL-FW orientation, the formation of an alginate fouling layer on the membrane surface could enhance the sieving effect and thus improve the rejection of arsenious acid with relatively larger molecular size. In the AL-DS orientation, alginate fouling in the membrane support layer had adverse effect on boron rejection at water flux below 4.2μm/s (15.3L/m 2/h), attributed to the foulant enhanced concentrative ICP effect. Findings have important implications in the performance and applicability of FO membrane processes. © 2011 Elsevier B.V.en_US
dc.languageengen_US
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/memscien_US
dc.relation.ispartofJournal of Membrane Scienceen_US
dc.subjectForward Osmosis (Fo)en_US
dc.subjectInternal Concentration Polarization (Icp)en_US
dc.subjectOrganic Foulingen_US
dc.subjectRejectionen_US
dc.subjectTrace Contaminantsen_US
dc.titleRemoval of boron and arsenic by forward osmosis membrane: Influence of membrane orientation and organic 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.doi10.1016/j.memsci.2011.10.028en_US
dc.identifier.scopuseid_2-s2.0-83855160782en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-83855160782&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume389en_US
dc.identifier.spage182en_US
dc.identifier.epage187en_US
dc.identifier.isiWOS:000300529100020-
dc.publisher.placeNetherlandsen_US
dc.identifier.scopusauthoridJin, X=7402589561en_US
dc.identifier.scopusauthoridShe, Q=34868602200en_US
dc.identifier.scopusauthoridAng, X=54785791300en_US
dc.identifier.scopusauthoridTang, CY=35489259800en_US

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