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dc.contributor.authorMa, Yingqun
dc.contributor.authorLin, Chuxia
dc.contributor.authorJiang, Yuehua
dc.contributor.authorLu, Wenzhou
dc.contributor.authorSi, Chunhua
dc.contributor.authorLiu, Yong
dc.date.accessioned2017-05-03T13:15:13Z
dc.date.available2017-05-03T13:15:13Z
dc.date.issued2009
dc.date.modified2010-06-23T05:24:58Z
dc.identifier.issn0304-3894
dc.identifier.doi10.1016/j.jhazmat.2009.07.135
dc.identifier.urihttp://hdl.handle.net/10072/30484
dc.description.abstractBatch experiments were conducted to investigate the competitive removal of water-borne Cu, Zn and Cd by a CaCO3-dominated red mud. The results show that the water-borne Cu had a higher affinity to the red mud, as compared to the water-borne Zn and Cd. The major mechanism responsible for the preferential retention of Cu by red mud was the formation of atacamite. It is likely that, initially, atacamite was formed mainly through the reaction between CuCl2 and NaOH. Reaction between CuCl2 and CaCO3 to form atacamite became more and more important with the gradual consumption of NaOH. Sequential extraction results show that the water-borne metals were preferentially associated with the NH2OH爃l-extractable fractions at the early stage of the experiment. With increase in the saturation degree of binding sites on red mud particles by the metals, the proportion of HCH3COO-extractable Cu fraction increased accordingly. Water-borne Zn and Cd were also increasingly bound in the HCH3COO-extractable forms until the metal binding capacity of the red mud was nearly depleted. After the binding sites of red mud particles were saturated, part of the Zn and Cd previously retained by the red mud was displaced by water-borne Cu, resulting in the release of the previously immobilized Zn and Cd to the solution.
dc.description.peerreviewedYes
dc.description.publicationstatusYes
dc.languageEnglish
dc.language.isoeng
dc.publisherElsevier
dc.publisher.placeNetherlands
dc.publisher.urihttp://www.sciencedirect.com/science/journal/03043894
dc.relation.ispartofstudentpublicationN
dc.relation.ispartofpagefrom1288
dc.relation.ispartofpageto1296
dc.relation.ispartofissue2-3
dc.relation.ispartofjournalJournal of Hazardous Materials
dc.relation.ispartofvolume172
dc.rights.retentionY
dc.subject.fieldofresearchChemical sciences
dc.subject.fieldofresearchEnvironmental sciences
dc.subject.fieldofresearchEnvironmental management not elsewhere classified
dc.subject.fieldofresearchEngineering
dc.subject.fieldofresearchcode34
dc.subject.fieldofresearchcode41
dc.subject.fieldofresearchcode410499
dc.subject.fieldofresearchcode40
dc.titleCompetitive removal of water-borne copper, zinc and cadmium by a CaCO3-dominated red mud
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
gro.date.issued2009
gro.hasfulltextNo Full Text
gro.griffith.authorLin, Chuxia


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