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Article: Effect of draw solution concentration and operating conditions on forward osmosis and pressure retarded osmosis performance in a spiral wound module

TitleEffect of draw solution concentration and operating conditions on forward osmosis and pressure retarded osmosis performance in a spiral wound module
Authors
KeywordsForward Osmosis (Fo)
Internal Concentration Polarization (Icp)
Osmotic Driving Force
Pressure Retarded Osmosis (Pro)
Reverse Osmosis (Ro)
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. 348 n. 1-2, p. 298-309 How to Cite?
AbstractForward osmosis (FO) and pressure retarded osmosis (PRO) are concentration-driven membrane processes. While they can be potentially used in water, wastewater, and energy applications, these processes suffer from the concentration polarization inside the porous membrane support resulting in severe flux decrease, a phenomenon known as internal concentration polarization (ICP). Researchers have investigated the effect of ICP both in theoretical and experimental studies. The current study extends the existing ICP model to include the effect of draw solution dilution by membrane permeate flow in a spiral wound FO module (SWFO). FO and PRO experiments were performed using a Hydrowell® SWFO under both submerged and cross-flow conditions. The effect of draw solution concentration, draw solution flow rate, feed water flow rate, and membrane orientation on FO and PRO water flux performance was systematically investigated. Permeate flow increased with greater draw solution concentration in both FO and PRO modes. ICP was found to drastically limit the available membrane flux in the concentration-driven membrane processes, and its adverse effect was more severe at greater draw solution concentration. Membrane flux was also affected by the dilution of draw solution when the permeate flow rate was comparable or greater than the draw solution flow rate. The submerged FO configuration performed nearly as good as the cross-flow configuration with feed water circulating outside of the membrane envelope (shorter flow path). In this case, the feed water flow rate only had limited effect on membrane flux likely due to its low mass transfer resistance. In contrary, the membrane flux can be adversely affected at low feed water flow rate when it was circulated inside of the membrane envelope (longer flow path). © 2009 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/185387
ISSN
2015 Impact Factor: 5.557
2015 SCImago Journal Rankings: 2.042
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorXu, Yen_US
dc.contributor.authorPeng, Xen_US
dc.contributor.authorTang, CYen_US
dc.contributor.authorFu, QSen_US
dc.contributor.authorNie, Sen_US
dc.date.accessioned2013-07-30T07:32:07Z-
dc.date.available2013-07-30T07:32:07Z-
dc.date.issued2010en_US
dc.identifier.citationJournal Of Membrane Science, 2010, v. 348 n. 1-2, p. 298-309en_US
dc.identifier.issn0376-7388en_US
dc.identifier.urihttp://hdl.handle.net/10722/185387-
dc.description.abstractForward osmosis (FO) and pressure retarded osmosis (PRO) are concentration-driven membrane processes. While they can be potentially used in water, wastewater, and energy applications, these processes suffer from the concentration polarization inside the porous membrane support resulting in severe flux decrease, a phenomenon known as internal concentration polarization (ICP). Researchers have investigated the effect of ICP both in theoretical and experimental studies. The current study extends the existing ICP model to include the effect of draw solution dilution by membrane permeate flow in a spiral wound FO module (SWFO). FO and PRO experiments were performed using a Hydrowell® SWFO under both submerged and cross-flow conditions. The effect of draw solution concentration, draw solution flow rate, feed water flow rate, and membrane orientation on FO and PRO water flux performance was systematically investigated. Permeate flow increased with greater draw solution concentration in both FO and PRO modes. ICP was found to drastically limit the available membrane flux in the concentration-driven membrane processes, and its adverse effect was more severe at greater draw solution concentration. Membrane flux was also affected by the dilution of draw solution when the permeate flow rate was comparable or greater than the draw solution flow rate. The submerged FO configuration performed nearly as good as the cross-flow configuration with feed water circulating outside of the membrane envelope (shorter flow path). In this case, the feed water flow rate only had limited effect on membrane flux likely due to its low mass transfer resistance. In contrary, the membrane flux can be adversely affected at low feed water flow rate when it was circulated inside of the membrane envelope (longer flow path). © 2009 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 Osmosis (Fo)en_US
dc.subjectInternal Concentration Polarization (Icp)en_US
dc.subjectOsmotic Driving Forceen_US
dc.subjectPressure Retarded Osmosis (Pro)en_US
dc.subjectReverse Osmosis (Ro)en_US
dc.titleEffect of draw solution concentration and operating conditions on forward osmosis and pressure retarded osmosis performance in a spiral wound moduleen_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.2009.11.013en_US
dc.identifier.scopuseid_2-s2.0-72649087949en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-72649087949&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume348en_US
dc.identifier.issue1-2en_US
dc.identifier.spage298en_US
dc.identifier.epage309en_US
dc.identifier.isiWOS:000274765300037-
dc.publisher.placeNetherlandsen_US
dc.identifier.scopusauthoridXu, Y=55694988700en_US
dc.identifier.scopusauthoridPeng, X=35574256900en_US
dc.identifier.scopusauthoridTang, CY=35489259800en_US
dc.identifier.scopusauthoridFu, QS=13606617700en_US
dc.identifier.scopusauthoridNie, S=35574292900en_US

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