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Article: Synthesis of high flux forward osmosis membranes by chemically crosslinked layer-by-layer polyelectrolytes

TitleSynthesis of high flux forward osmosis membranes by chemically crosslinked layer-by-layer polyelectrolytes
Authors
KeywordsChemical Crosslinking
Forward Osmosis (Fo)
Internal Concentration Polarization
Layer-By-Layer (Lbl) Assembly
Polyelectrolyte Deposition
Issue Date2011
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/memsci
Citation
Journal Of Membrane Science, 2011, v. 381 n. 1-2, p. 74-80 How to Cite?
AbstractForward osmosis (FO) membranes were successfully fabricated using layer-by-layer (LbL) assembly of poly(allylamine hydrochloride) (PAH) and poly(sodium 4-styrene-sulfonate) (PSS) on a porous polyacrylonitrile (PAN) substrate. In addition, chemical crosslinking of LbL polyelectrolyte layers was performed with glutaraldehyde (GA). The resultant crosslinked (the xLbL series) and non-crosslinked (the LbL series) membranes were characterized in terms of the substrate morphology and structure, the separation layer water permeability and salt rejection, and the FO water flux and solute flux performance. Both LbL and xLbL membranes had relatively high water permeability (∼ or >7.0L/m 2hbar). On the other hand, the crosslinked xLbL membranes showed better and more stable MgCl 2 rejection, leading to a relatively low FO solute reverse transport (the solute flux over water flux ratio<6mM regardless of draw solution (DS) concentration and membrane orientation). High FO water fluxes were achieved for both crosslinked and non-crosslinked membranes, where a thin substrate with finger-like pores were adopted to minimize internal concentration polarization in the porous support layer. The crosslinked membrane xLbL3 (with 3 PAH/PSS deposition layers) had an FO water flux of ∼100L/m 2h in the active-layer-facing-DS orientation using a 2 or 3M MgCl 2 draw solution and distilled water as the feed water, which clearly demonstrates the potential of LbL membranes for high flux FO applications. © 2011 Elsevier B.V.
Persistent Identifierhttp://hdl.handle.net/10722/185407
ISSN
2015 Impact Factor: 5.557
2015 SCImago Journal Rankings: 2.042
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorQiu, Cen_US
dc.contributor.authorQi, Sen_US
dc.contributor.authorTang, CYen_US
dc.date.accessioned2013-07-30T07:32:19Z-
dc.date.available2013-07-30T07:32:19Z-
dc.date.issued2011en_US
dc.identifier.citationJournal Of Membrane Science, 2011, v. 381 n. 1-2, p. 74-80en_US
dc.identifier.issn0376-7388en_US
dc.identifier.urihttp://hdl.handle.net/10722/185407-
dc.description.abstractForward osmosis (FO) membranes were successfully fabricated using layer-by-layer (LbL) assembly of poly(allylamine hydrochloride) (PAH) and poly(sodium 4-styrene-sulfonate) (PSS) on a porous polyacrylonitrile (PAN) substrate. In addition, chemical crosslinking of LbL polyelectrolyte layers was performed with glutaraldehyde (GA). The resultant crosslinked (the xLbL series) and non-crosslinked (the LbL series) membranes were characterized in terms of the substrate morphology and structure, the separation layer water permeability and salt rejection, and the FO water flux and solute flux performance. Both LbL and xLbL membranes had relatively high water permeability (∼ or >7.0L/m 2hbar). On the other hand, the crosslinked xLbL membranes showed better and more stable MgCl 2 rejection, leading to a relatively low FO solute reverse transport (the solute flux over water flux ratio<6mM regardless of draw solution (DS) concentration and membrane orientation). High FO water fluxes were achieved for both crosslinked and non-crosslinked membranes, where a thin substrate with finger-like pores were adopted to minimize internal concentration polarization in the porous support layer. The crosslinked membrane xLbL3 (with 3 PAH/PSS deposition layers) had an FO water flux of ∼100L/m 2h in the active-layer-facing-DS orientation using a 2 or 3M MgCl 2 draw solution and distilled water as the feed water, which clearly demonstrates the potential of LbL membranes for high flux FO applications. © 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.subjectChemical Crosslinkingen_US
dc.subjectForward Osmosis (Fo)en_US
dc.subjectInternal Concentration Polarizationen_US
dc.subjectLayer-By-Layer (Lbl) Assemblyen_US
dc.subjectPolyelectrolyte Depositionen_US
dc.titleSynthesis of high flux forward osmosis membranes by chemically crosslinked layer-by-layer polyelectrolytesen_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.2011.07.013en_US
dc.identifier.scopuseid_2-s2.0-80052028969en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-80052028969&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume381en_US
dc.identifier.issue1-2en_US
dc.identifier.spage74en_US
dc.identifier.epage80en_US
dc.identifier.isiWOS:000295564600008-
dc.publisher.placeNetherlandsen_US
dc.identifier.scopusauthoridQiu, C=36019493600en_US
dc.identifier.scopusauthoridQi, S=48461816800en_US
dc.identifier.scopusauthoridTang, CY=35489259800en_US

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