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Article: Hexavalent chromium removal from near natural water by copper-iron bimetallic particles

TitleHexavalent chromium removal from near natural water by copper-iron bimetallic particles
Authors
Issue Date2010
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/watres
Citation
Water Research, 2010, v. 44 n. 10, p. 3101-3108 How to Cite?
AbstractThe reduction of hexavalent chromium (Cr(VI)) by zero-valent iron (ZVI) is self-inhibiting in near natural groundwater because insulating Fe(III)-Cr(III) (oxy)hydroxide film forms on the ZVI surface during the reaction. This study tries to overcome this deficiency by coating the surface of ZVI with copper to form copper-iron bimetallic particles. The Cr(VI) removal rate by ZVI rose significantly after the copper coating was applied. The copper loading needed for enhancing Cr(VI) removal was much higher than that needed for enhancing removal of chlorinated organic compounds or other oxidative contaminants, because of the higher oxidation potential of Cr(VI). The results of X-ray photoelectron spectroscopy (XPS) indicate that coating copper onto the surface of ZVI can not only increase the deepness of the oxidation film but also increase the oxidation state of iron in the film. This phenomenon means higher Cr(VI) removal capacity per unit weight of ZVI. © 2010 Elsevier Ltd.
Persistent Identifierhttp://hdl.handle.net/10722/132172
ISSN
2015 Impact Factor: 5.991
2015 SCImago Journal Rankings: 2.772
ISI Accession Number ID
Funding AgencyGrant Number
National Science Council of TaiwanNSC 93-2211-E-002-035
Funding Information:

The authors thank the National Science Council of Taiwan for financial support of this work under contract NSC 93-2211-E-002-035.

References

 

DC FieldValueLanguage
dc.contributor.authorHu, CYen_HK
dc.contributor.authorLo, SLen_HK
dc.contributor.authorLiou, YHen_HK
dc.contributor.authorHsu, YWen_HK
dc.contributor.authorShih, Ken_HK
dc.contributor.authorLin, CJen_HK
dc.date.accessioned2011-03-21T08:58:37Z-
dc.date.available2011-03-21T08:58:37Z-
dc.date.issued2010en_HK
dc.identifier.citationWater Research, 2010, v. 44 n. 10, p. 3101-3108en_HK
dc.identifier.issn0043-1354en_HK
dc.identifier.urihttp://hdl.handle.net/10722/132172-
dc.description.abstractThe reduction of hexavalent chromium (Cr(VI)) by zero-valent iron (ZVI) is self-inhibiting in near natural groundwater because insulating Fe(III)-Cr(III) (oxy)hydroxide film forms on the ZVI surface during the reaction. This study tries to overcome this deficiency by coating the surface of ZVI with copper to form copper-iron bimetallic particles. The Cr(VI) removal rate by ZVI rose significantly after the copper coating was applied. The copper loading needed for enhancing Cr(VI) removal was much higher than that needed for enhancing removal of chlorinated organic compounds or other oxidative contaminants, because of the higher oxidation potential of Cr(VI). The results of X-ray photoelectron spectroscopy (XPS) indicate that coating copper onto the surface of ZVI can not only increase the deepness of the oxidation film but also increase the oxidation state of iron in the film. This phenomenon means higher Cr(VI) removal capacity per unit weight of ZVI. © 2010 Elsevier Ltd.en_HK
dc.languageengen_US
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/watresen_HK
dc.relation.ispartofWater Researchen_HK
dc.subject.meshChromium - chemistry - isolation & purificationen_HK
dc.subject.meshCopper - chemistryen_HK
dc.subject.meshIron - chemistryen_HK
dc.subject.meshMicroscopy, Electron, Scanningen_HK
dc.subject.meshModels, Theoreticalen_HK
dc.subject.meshOxidation-Reductionen_HK
dc.subject.meshPhotoelectron Spectroscopyen_HK
dc.subject.meshWater Purification - methodsen_HK
dc.titleHexavalent chromium removal from near natural water by copper-iron bimetallic particlesen_HK
dc.typeArticleen_HK
dc.identifier.emailShih, K:kshih@hkucc.hku.hken_HK
dc.identifier.authorityShih, K=rp00167en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.watres.2010.02.037en_HK
dc.identifier.pmid20350740-
dc.identifier.scopuseid_2-s2.0-77952547189en_HK
dc.identifier.hkuros178459en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77952547189&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume44en_HK
dc.identifier.issue10en_HK
dc.identifier.spage3101en_HK
dc.identifier.epage3108en_HK
dc.identifier.isiWOS:000278477100009-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridHu, CY=23492617300en_HK
dc.identifier.scopusauthoridLo, SL=35237835000en_HK
dc.identifier.scopusauthoridLiou, YH=7102949488en_HK
dc.identifier.scopusauthoridHsu, YW=9275183000en_HK
dc.identifier.scopusauthoridShih, K=14072108900en_HK
dc.identifier.scopusauthoridLin, CJ=14028627900en_HK
dc.identifier.citeulike6835912-

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