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Article: Desorption of cadmium from a natural Shanghai clay using citric acid industrial wastewater

TitleDesorption of cadmium from a natural Shanghai clay using citric acid industrial wastewater
Authors
KeywordsElectrokinetic remediation
Sorption
Desorption
Citric acid industrial wastewater (CAIW)
MINTEQA2
Issue Date2011
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jhazmat
Citation
Journal Of Hazardous Materials, 2011, v. 191 n. 1-3, p. 144-149 How to Cite?
AbstractThe sorption/desorption characteristics of heavy metals onto/from soil particle surfaces are the primary factors controlling the success of the remediation of heavy-metal contaminated soils. These characteristics are pH-dependent, chemical-specific, and reversible; and can be modified by enhancement agents such as chelates and surfactants. In this study, batch experiments were conducted to evaluate the feasibility of using citric acid industrial wastewater (CAIW) to desorb cadmium from a natural clay from Shanghai, China at different soil mixture pHs. It can be observed from the results that the proportion of cadmium desorbed from the soil using synthesized CAIW is generally satisfactory, i.e., >60%, when the soil mixture pH is lower than 6. However, the proportion of desorbed cadmium decreases significantly with increase in soil mixture pH. The dominant cadmium desorption mechanism using CAIW is the complexion of cadmium with citric acid and acetic acid in CAIW. It is concluded that CAIW can be a promising enhancement agent for the remediation of cadmium-contaminated natural soils when the environmental conditions are favorable. As a result, CAIW, a waste product itself, can be put into productive use in soil remediation. © 2011 Elsevier B.V.
Persistent Identifierhttp://hdl.handle.net/10722/134394
ISSN
2015 Impact Factor: 4.836
2015 SCImago Journal Rankings: 1.692
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorGu, YYen_HK
dc.contributor.authorYeung, ATen_HK
dc.date.accessioned2011-06-17T09:19:06Z-
dc.date.available2011-06-17T09:19:06Z-
dc.date.issued2011en_HK
dc.identifier.citationJournal Of Hazardous Materials, 2011, v. 191 n. 1-3, p. 144-149en_HK
dc.identifier.issn0304-3894en_HK
dc.identifier.urihttp://hdl.handle.net/10722/134394-
dc.description.abstractThe sorption/desorption characteristics of heavy metals onto/from soil particle surfaces are the primary factors controlling the success of the remediation of heavy-metal contaminated soils. These characteristics are pH-dependent, chemical-specific, and reversible; and can be modified by enhancement agents such as chelates and surfactants. In this study, batch experiments were conducted to evaluate the feasibility of using citric acid industrial wastewater (CAIW) to desorb cadmium from a natural clay from Shanghai, China at different soil mixture pHs. It can be observed from the results that the proportion of cadmium desorbed from the soil using synthesized CAIW is generally satisfactory, i.e., >60%, when the soil mixture pH is lower than 6. However, the proportion of desorbed cadmium decreases significantly with increase in soil mixture pH. The dominant cadmium desorption mechanism using CAIW is the complexion of cadmium with citric acid and acetic acid in CAIW. It is concluded that CAIW can be a promising enhancement agent for the remediation of cadmium-contaminated natural soils when the environmental conditions are favorable. As a result, CAIW, a waste product itself, can be put into productive use in soil remediation. © 2011 Elsevier B.V.en_HK
dc.languageengen_US
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jhazmaten_HK
dc.relation.ispartofJournal of Hazardous Materialsen_HK
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Journal of Hazardous Materials. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Hazardous Materials, 2011, v. 191 n. 1-3, p. 144-149. DOI: 10.1016/j.jhazmat.2011.04.054-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectElectrokinetic remediation-
dc.subjectSorption-
dc.subjectDesorption-
dc.subjectCitric acid industrial wastewater (CAIW)-
dc.subjectMINTEQA2-
dc.subject.meshAluminum Silicatesen_HK
dc.subject.meshCadmium - isolation & purificationen_HK
dc.subject.meshChinaen_HK
dc.subject.meshCitric Acid - chemistryen_HK
dc.subject.meshIndustrial Wasteen_HK
dc.subject.meshWater Pollutants, Chemical - isolation & purificationen_HK
dc.titleDesorption of cadmium from a natural Shanghai clay using citric acid industrial wastewateren_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0304-3894&volume=191&issue=1-3&spage=144&epage=149&date=2011&atitle=Desorption+of+cadmium+from+a+natural+shanghai+clay+using+citric+acid+industrial+wastewater-
dc.identifier.emailYeung, AT:yeungat@hkucc.hku.hken_HK
dc.identifier.authorityYeung, AT=rp00203en_HK
dc.description.naturepostprint-
dc.identifier.doi10.1016/j.jhazmat.2011.04.054en_HK
dc.identifier.pmid21555180-
dc.identifier.scopuseid_2-s2.0-79957775240en_HK
dc.identifier.hkuros185640en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-79957775240&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume191en_HK
dc.identifier.issue1-3en_HK
dc.identifier.spage144en_HK
dc.identifier.epage149en_HK
dc.identifier.eissn1873-3336-
dc.identifier.isiWOS:000292852300018-
dc.publisher.placeNetherlandsen_HK
dc.identifier.scopusauthoridGu, YY=35190246300en_HK
dc.identifier.scopusauthoridYeung, AT=7102390361en_HK
dc.identifier.citeulike9227783-

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