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Article: Organic fouling of thin-film composite polyamide and cellulose triacetate forward osmosis membranes by oppositely charged macromolecules

TitleOrganic fouling of thin-film composite polyamide and cellulose triacetate forward osmosis membranes by oppositely charged macromolecules
Authors
KeywordsCellulose Triacetate
Forward Osmosis (Fo)
Macromolecules
Organic Fouling
Thin Film Composite Polyamide
Issue Date2013
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/watres
Citation
Water Research, 2013, v. 47 n. 5, p. 1867-1874 How to Cite?
AbstractFouling of cellulose triacetate (CTA) and thin-film composite (TFC) forward osmosis (FO) membranes by organic macromolecules were studied using oppositely charged lysozyme (LYS) and alginate (ALG) as model foulants. Flux performance and foulant deposition on membranes were systematically investigated for a submerged membrane system. When an initial flux of 25 L/m2h was applied, both flux reduction and foulant mass deposition were severe for feed water containing the mixture of LYS and ALG (e.g., 50% LYS and 50% ALG at a total foulant concentration of 100 mg/L). In comparison, fouling was much milder for feed water containing either LYS or ALG alone. Compared to the CTA FO membrane, the TFC FO membrane showed greater fouling propensity under mild FO fouling conditions due to its much rougher surface. Nevertheless, under severe FO fouling conditions, fouling was dominated by foulant-deposited-foulant interaction and membrane surface properties played a less important role. Furthermore, when the feed water contained both LYS and ALG in sufficient amount, the deposited cake layer foulant composition (i.e., the LYS/ALG mass ratio) was not strongly affected by membrane types (CTA versus TFC) nor testing modes (pressure-driven NF mode versus osmosis-driven FO mode). In contrast, solution chemistry such as pH and calcium concentration had remarkable effect on the cake layer composition due to their effects on foulant-foulant interaction. © 2013 Elsevier Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/185443
ISSN
2015 Impact Factor: 5.991
2015 SCImago Journal Rankings: 2.772
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorGu, Yen_US
dc.contributor.authorWang, YNen_US
dc.contributor.authorWei, Jen_US
dc.contributor.authorTang, CYen_US
dc.date.accessioned2013-07-30T07:32:36Z-
dc.date.available2013-07-30T07:32:36Z-
dc.date.issued2013en_US
dc.identifier.citationWater Research, 2013, v. 47 n. 5, p. 1867-1874en_US
dc.identifier.issn0043-1354en_US
dc.identifier.urihttp://hdl.handle.net/10722/185443-
dc.description.abstractFouling of cellulose triacetate (CTA) and thin-film composite (TFC) forward osmosis (FO) membranes by organic macromolecules were studied using oppositely charged lysozyme (LYS) and alginate (ALG) as model foulants. Flux performance and foulant deposition on membranes were systematically investigated for a submerged membrane system. When an initial flux of 25 L/m2h was applied, both flux reduction and foulant mass deposition were severe for feed water containing the mixture of LYS and ALG (e.g., 50% LYS and 50% ALG at a total foulant concentration of 100 mg/L). In comparison, fouling was much milder for feed water containing either LYS or ALG alone. Compared to the CTA FO membrane, the TFC FO membrane showed greater fouling propensity under mild FO fouling conditions due to its much rougher surface. Nevertheless, under severe FO fouling conditions, fouling was dominated by foulant-deposited-foulant interaction and membrane surface properties played a less important role. Furthermore, when the feed water contained both LYS and ALG in sufficient amount, the deposited cake layer foulant composition (i.e., the LYS/ALG mass ratio) was not strongly affected by membrane types (CTA versus TFC) nor testing modes (pressure-driven NF mode versus osmosis-driven FO mode). In contrast, solution chemistry such as pH and calcium concentration had remarkable effect on the cake layer composition due to their effects on foulant-foulant interaction. © 2013 Elsevier Ltd.en_US
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/watresen_US
dc.relation.ispartofWater Researchen_US
dc.subjectCellulose Triacetateen_US
dc.subjectForward Osmosis (Fo)en_US
dc.subjectMacromoleculesen_US
dc.subjectOrganic Foulingen_US
dc.subjectThin Film Composite Polyamideen_US
dc.titleOrganic fouling of thin-film composite polyamide and cellulose triacetate forward osmosis membranes by oppositely charged macromoleculesen_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.watres.2013.01.008en_US
dc.identifier.pmid23384517-
dc.identifier.scopuseid_2-s2.0-84873521920en_US
dc.identifier.hkuros231333-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-84873521920&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume47en_US
dc.identifier.issue5en_US
dc.identifier.spage1867en_US
dc.identifier.epage1874en_US
dc.identifier.isiWOS:000315543100015-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridGu, Y=36678837600en_US
dc.identifier.scopusauthoridWang, YN=35076853300en_US
dc.identifier.scopusauthoridWei, J=55360900400en_US
dc.identifier.scopusauthoridTang, CY=35489259800en_US

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