File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Calcium-Carboxyl Intrabridging during Interfacial Polymerization: A Novel Strategy to Improve Antifouling Performance of Thin Film Composite Membranes

TitleCalcium-Carboxyl Intrabridging during Interfacial Polymerization: A Novel Strategy to Improve Antifouling Performance of Thin Film Composite Membranes
Authors
KeywordsEconomic and social effects
Hydrophilicity
Membrane fouling
Membranes
Metal ions
Issue Date2019
PublisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journal/esthag
Citation
Environmental Science & Technology, 2019, v. 53 n. 8, p. 4371-4379 How to Cite?
AbstractThis study reports a novel intrabridging strategy to improve the antifouling performance of a thin-film composite (TFC) membrane. We demonstrate that the addition of Ca2+ during the interfacial polymerization reaction led to the formation of stable Ca2+–carboxyl complexes within the polyamide rejection layer. This intrabridging of carboxyl groups by Ca2+ effectively sequestrated them, reducing their availability for binding divalent metal ions in the aqueous solution and for forming foulant-metal-membrane interbridges. Membrane fouling and cleaning experiments confirmed improved flux stability and fouling reversibility for the Ca2+ modified membranes. The greatly enhanced antifouling performance of these membranes, together with their better surface hydrophilicity and greater water permeability, makes the intrabridging approach highly attractive in overcoming the classical permeability-selectivity-antifouling trade-off. Our findings pave a new direction for synthesizing high-performance TFC membranes.
Persistent Identifierhttp://hdl.handle.net/10722/272854
ISSN
2017 Impact Factor: 6.653
2015 SCImago Journal Rankings: 2.664

 

DC FieldValueLanguage
dc.contributor.authorHao, X-
dc.contributor.authorGao, S-
dc.contributor.authorTian, J-
dc.contributor.authorSun, Y-
dc.contributor.authorCui, F-
dc.contributor.authorTang, CY-
dc.date.accessioned2019-08-06T09:17:50Z-
dc.date.available2019-08-06T09:17:50Z-
dc.date.issued2019-
dc.identifier.citationEnvironmental Science & Technology, 2019, v. 53 n. 8, p. 4371-4379-
dc.identifier.issn0013-936X-
dc.identifier.urihttp://hdl.handle.net/10722/272854-
dc.description.abstractThis study reports a novel intrabridging strategy to improve the antifouling performance of a thin-film composite (TFC) membrane. We demonstrate that the addition of Ca2+ during the interfacial polymerization reaction led to the formation of stable Ca2+–carboxyl complexes within the polyamide rejection layer. This intrabridging of carboxyl groups by Ca2+ effectively sequestrated them, reducing their availability for binding divalent metal ions in the aqueous solution and for forming foulant-metal-membrane interbridges. Membrane fouling and cleaning experiments confirmed improved flux stability and fouling reversibility for the Ca2+ modified membranes. The greatly enhanced antifouling performance of these membranes, together with their better surface hydrophilicity and greater water permeability, makes the intrabridging approach highly attractive in overcoming the classical permeability-selectivity-antifouling trade-off. Our findings pave a new direction for synthesizing high-performance TFC membranes.-
dc.languageeng-
dc.publisherAmerican Chemical Society. The Journal's web site is located at http://pubs.acs.org/journal/esthag-
dc.relation.ispartofEnvironmental Science & Technology-
dc.subjectEconomic and social effects-
dc.subjectHydrophilicity-
dc.subjectMembrane fouling-
dc.subjectMembranes-
dc.subjectMetal ions-
dc.titleCalcium-Carboxyl Intrabridging during Interfacial Polymerization: A Novel Strategy to Improve Antifouling Performance of Thin Film Composite Membranes-
dc.typeArticle-
dc.identifier.emailTang, CY: tangc@hku.hk-
dc.identifier.authorityTang, CY=rp01765-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1021/acs.est.8b05690-
dc.identifier.pmid30888808-
dc.identifier.scopuseid_2-s2.0-85064554148-
dc.identifier.hkuros299796-
dc.identifier.volume53-
dc.identifier.issue8-
dc.identifier.spage4371-
dc.identifier.epage4379-
dc.publisher.placeUnited States-

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats