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Article: Nanocomposite substrates for controlling internal concentration polarization in forward osmosis membranes

TitleNanocomposite substrates for controlling internal concentration polarization in forward osmosis membranes
Authors
KeywordsForward Osmosis (Fo)
Internal Concentration Polarization (Icp)
Nanocomposite Membrane
Pressure Retarded Osmosis (Pro)
Reverse Osmosis (Ro)
Thin Film Composite (Tfc)
Issue Date2013
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/memsci
Citation
Journal Of Membrane Science, 2013, v. 441, p. 54-62 How to Cite?
AbstractForward osmosis (FO) is an emerging membrane separation technology with many potential applications. The water flux performance of existing FO membranes is largely limited by the internal concentration polarization (ICP) of solutes in their porous substrates. The current study investigated the use of nanocomposite substrates for controlling ICP and thus improving FO water flux. Polysulfone-nanocomposite (PSfN) substrates were prepared via phase inversion by incorporating porous zeolite nanoparticles in polysulfone. The PSfN0.5 (with 0.5. wt% zeolite loading) substrate showed improved surface porosity and hydrophilicity. A thin film composite (TFC) polyamide active layer was prepared by interfacial polymerization on the PSfN0.5 substrate, and the resulting TFC-PFSN0.5 membrane showed significantly enhanced water permeability compared to the TFC membrane prepared on a conventional polysulfone substrate. Under identical testing conditions, the FO water flux of the TFC-PFSN0.5 membrane was more than doubled of that of the conventional TFC membrane. Using 2. M NaCl as draw solution (DS) and 0-0.01. M NaCl as feed solution (FS), PSfN0.5-TFC had an FO water flux as high as ~80. LMH in the active layer facing DS (AL-DS) orientation and ~40. LMH in the AL-FS orientation. Further analysis revealed that the incorporation of zeolite nanoparticles significantly reduced the substrate structural parameter (. S=0.34. mm for PSfN0.5-TFC compared to 0.96. mm for TFC). The current study demonstrates for the first time the use of porous particles and nanocomposite substrates for controlling ICP in FO operation. © 2013 Elsevier B.V.
Persistent Identifierhttp://hdl.handle.net/10722/185446
ISSN
2015 Impact Factor: 5.557
2015 SCImago Journal Rankings: 2.042
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorMa, Nen_US
dc.contributor.authorWei, Jen_US
dc.contributor.authorQi, Sen_US
dc.contributor.authorZhao, Yen_US
dc.contributor.authorGao, Yen_US
dc.contributor.authorTang, CYen_US
dc.date.accessioned2013-07-30T07:32:37Z-
dc.date.available2013-07-30T07:32:37Z-
dc.date.issued2013en_US
dc.identifier.citationJournal Of Membrane Science, 2013, v. 441, p. 54-62en_US
dc.identifier.issn0376-7388en_US
dc.identifier.urihttp://hdl.handle.net/10722/185446-
dc.description.abstractForward osmosis (FO) is an emerging membrane separation technology with many potential applications. The water flux performance of existing FO membranes is largely limited by the internal concentration polarization (ICP) of solutes in their porous substrates. The current study investigated the use of nanocomposite substrates for controlling ICP and thus improving FO water flux. Polysulfone-nanocomposite (PSfN) substrates were prepared via phase inversion by incorporating porous zeolite nanoparticles in polysulfone. The PSfN0.5 (with 0.5. wt% zeolite loading) substrate showed improved surface porosity and hydrophilicity. A thin film composite (TFC) polyamide active layer was prepared by interfacial polymerization on the PSfN0.5 substrate, and the resulting TFC-PFSN0.5 membrane showed significantly enhanced water permeability compared to the TFC membrane prepared on a conventional polysulfone substrate. Under identical testing conditions, the FO water flux of the TFC-PFSN0.5 membrane was more than doubled of that of the conventional TFC membrane. Using 2. M NaCl as draw solution (DS) and 0-0.01. M NaCl as feed solution (FS), PSfN0.5-TFC had an FO water flux as high as ~80. LMH in the active layer facing DS (AL-DS) orientation and ~40. LMH in the AL-FS orientation. Further analysis revealed that the incorporation of zeolite nanoparticles significantly reduced the substrate structural parameter (. S=0.34. mm for PSfN0.5-TFC compared to 0.96. mm for TFC). The current study demonstrates for the first time the use of porous particles and nanocomposite substrates for controlling ICP in FO operation. © 2013 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.subjectNanocomposite Membraneen_US
dc.subjectPressure Retarded Osmosis (Pro)en_US
dc.subjectReverse Osmosis (Ro)en_US
dc.subjectThin Film Composite (Tfc)en_US
dc.titleNanocomposite substrates for controlling internal concentration polarization in forward osmosis membranesen_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.2013.04.004en_US
dc.identifier.scopuseid_2-s2.0-84877335369en_US
dc.identifier.hkuros231347-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84877335369&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume441en_US
dc.identifier.spage54en_US
dc.identifier.epage62en_US
dc.identifier.isiWOS:000320694300007-
dc.publisher.placeNetherlandsen_US
dc.identifier.scopusauthoridMa, N=55683371500en_US
dc.identifier.scopusauthoridWei, J=55360900400en_US
dc.identifier.scopusauthoridQi, S=48461816800en_US
dc.identifier.scopusauthoridZhao, Y=55324866000en_US
dc.identifier.scopusauthoridGao, Y=55143621800en_US
dc.identifier.scopusauthoridTang, CY=35489259800en_US

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