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Article: Characterization of novel forward osmosis hollow fiber membranes

TitleCharacterization of novel forward osmosis hollow fiber membranes
Authors
KeywordsForward Osmosis
Hollow Fiber
Internal Concentration Polarization
Structural Parameter
Thin Film Composite
Issue Date2010
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/memsci
Citation
Journal Of Membrane Science, 2010, v. 355 n. 1-2, p. 158-167 How to Cite?
AbstractForward osmosis (FO) has received intensive studies recently for a range of potential applications such as wastewater treatment, water purification and seawater desalination. One of the major challenges to be overcome is the lack of an optimized FO membrane that can produce a high water flux comparable to commercial RO membranes. Two types of thin-film composite FO hollow fibers with an ultra-thin polyamide-based RO-like skin layer (300-600 nm) on either the outer surface (#A-FO) or inner surface (#B-FO) of a porous hollow fiber substrate have been successfully fabricated. These novel composite FO hollow fibers have been characterized by a series of standard protocols and benchmarked against commercially available FO flat sheet membranes and reported NF hollow fibers used for the FO process. The characterization reveals that the FO hollow fiber membranes possess a large lumen. The substrates are highly porous with a narrow pore size distribution. The active layers present excellent intrinsic separation properties with a hydrophilic rejection layer and good mechanical strength. The #B-FO hollow fiber membrane can achieve a high FO water flux of 32.2 L/m2 h using a 0.5 M NaCl draw solution in the active rejection layer facing draw solution (AL-facing-DS) configuration at 23 °C. The corresponding salt flux is only 3.7 g/m2 h. To the best of our knowledge, the performance of the #B-FO hollow fiber is superior to all FO membranes reported in the open literature. The current study suggests that the optimal FO membrane structure would possess a very small portion of sponge-like layer in a thin and highly porous substrate, which suggests a way for further improvement. © 2010 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/185390
ISSN
2015 Impact Factor: 5.557
2015 SCImago Journal Rankings: 2.042
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorWang, Ren_US
dc.contributor.authorShi, Len_US
dc.contributor.authorTang, CYen_US
dc.contributor.authorChou, Sen_US
dc.contributor.authorQiu, Cen_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.citationJournal Of Membrane Science, 2010, v. 355 n. 1-2, p. 158-167en_US
dc.identifier.issn0376-7388en_US
dc.identifier.urihttp://hdl.handle.net/10722/185390-
dc.description.abstractForward osmosis (FO) has received intensive studies recently for a range of potential applications such as wastewater treatment, water purification and seawater desalination. One of the major challenges to be overcome is the lack of an optimized FO membrane that can produce a high water flux comparable to commercial RO membranes. Two types of thin-film composite FO hollow fibers with an ultra-thin polyamide-based RO-like skin layer (300-600 nm) on either the outer surface (#A-FO) or inner surface (#B-FO) of a porous hollow fiber substrate have been successfully fabricated. These novel composite FO hollow fibers have been characterized by a series of standard protocols and benchmarked against commercially available FO flat sheet membranes and reported NF hollow fibers used for the FO process. The characterization reveals that the FO hollow fiber membranes possess a large lumen. The substrates are highly porous with a narrow pore size distribution. The active layers present excellent intrinsic separation properties with a hydrophilic rejection layer and good mechanical strength. The #B-FO hollow fiber membrane can achieve a high FO water flux of 32.2 L/m2 h using a 0.5 M NaCl draw solution in the active rejection layer facing draw solution (AL-facing-DS) configuration at 23 °C. The corresponding salt flux is only 3.7 g/m2 h. To the best of our knowledge, the performance of the #B-FO hollow fiber is superior to all FO membranes reported in the open literature. The current study suggests that the optimal FO membrane structure would possess a very small portion of sponge-like layer in a thin and highly porous substrate, which suggests a way for further improvement. © 2010 Elsevier B.V. All rights reserved.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 Osmosisen_US
dc.subjectHollow Fiberen_US
dc.subjectInternal Concentration Polarizationen_US
dc.subjectStructural Parameteren_US
dc.subjectThin Film Compositeen_US
dc.titleCharacterization of novel forward osmosis hollow fiber 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.2010.03.017en_US
dc.identifier.scopuseid_2-s2.0-77951022221en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77951022221&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume355en_US
dc.identifier.issue1-2en_US
dc.identifier.spage158en_US
dc.identifier.epage167en_US
dc.identifier.isiWOS:000277895400020-
dc.publisher.placeNetherlandsen_US
dc.identifier.scopusauthoridWang, R=35081334000en_US
dc.identifier.scopusauthoridShi, L=36079938000en_US
dc.identifier.scopusauthoridTang, CY=35489259800en_US
dc.identifier.scopusauthoridChou, S=36019076000en_US
dc.identifier.scopusauthoridQiu, C=36019493600en_US
dc.identifier.scopusauthoridFane, AG=35593963600en_US

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