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Conference Paper: Stabilization of hazardous metals through thermal reactions with clay materials

TitleStabilization of hazardous metals through thermal reactions with clay materials
Authors
KeywordsClays
Thermal factors
Soil pollution
Heavy metals
Issue Date2012
PublisherAmerican Society of Civil Engineers.
Citation
The 2012 GeoCongress, Oakland, CA., 25-29 March 2012. In GeoCongress 2012: State of the Art and Practice in Geotechnical Engineering, 2012, p. 3968-3977 How to Cite?
AbstractThermal treatment is an effective method to remediate hazardous contaminated soil and also to convert hazardous metal wastes into ceramics useful in industry and construction, but the stabilization mechanisms have up to now not been well identified. In this study, incorporation mechanisms of nickel and copper by kaolinite and the other aluminum- or iron-rich precursors commonly found in clays were investigated under different thermal conditions. NiAl2O4, CuAl2O4, and NiFe2O4 were the product phases of a 3-h sintering process, with these quantities evaluated by the quantitative X-ray diffraction (XRD) technique. High metal transformation ratios were found, and the efficiencies were generally enhanced when the sintering temperature was increased. In prolonged leaching experiments for nickel product phases, both aluminate and ferrite spinels proved superior to nickel oxide for the immobilization of nickel.
DescriptionTheme: State of the Art and Practice in Geotechnical Engineering
Track: Geoenvironmental Engineering - Session: Advances in Heavy Metal Soil Treatment
Persistent Identifierhttp://hdl.handle.net/10722/160523
ISBN

 

DC FieldValueLanguage
dc.contributor.authorShih, Ken_US
dc.contributor.authorLu, Xen_US
dc.date.accessioned2012-08-16T06:12:56Z-
dc.date.available2012-08-16T06:12:56Z-
dc.date.issued2012en_US
dc.identifier.citationThe 2012 GeoCongress, Oakland, CA., 25-29 March 2012. In GeoCongress 2012: State of the Art and Practice in Geotechnical Engineering, 2012, p. 3968-3977en_US
dc.identifier.isbn978-0-7844-1212-1-
dc.identifier.urihttp://hdl.handle.net/10722/160523-
dc.descriptionTheme: State of the Art and Practice in Geotechnical Engineering-
dc.descriptionTrack: Geoenvironmental Engineering - Session: Advances in Heavy Metal Soil Treatment-
dc.description.abstractThermal treatment is an effective method to remediate hazardous contaminated soil and also to convert hazardous metal wastes into ceramics useful in industry and construction, but the stabilization mechanisms have up to now not been well identified. In this study, incorporation mechanisms of nickel and copper by kaolinite and the other aluminum- or iron-rich precursors commonly found in clays were investigated under different thermal conditions. NiAl2O4, CuAl2O4, and NiFe2O4 were the product phases of a 3-h sintering process, with these quantities evaluated by the quantitative X-ray diffraction (XRD) technique. High metal transformation ratios were found, and the efficiencies were generally enhanced when the sintering temperature was increased. In prolonged leaching experiments for nickel product phases, both aluminate and ferrite spinels proved superior to nickel oxide for the immobilization of nickel.-
dc.languageengen_US
dc.publisherAmerican Society of Civil Engineers.-
dc.relation.ispartofGeoCongress 2012: State of the Art and Practice in Geotechnical Engineeringen_US
dc.rightsGeoCongress 2012: State of the Art and Practice in Geotechnical Engineering. Copyright © American Society of Civil Engineers.-
dc.subjectClays-
dc.subjectThermal factors-
dc.subjectSoil pollution-
dc.subjectHeavy metals-
dc.titleStabilization of hazardous metals through thermal reactions with clay materialsen_US
dc.typeConference_Paperen_US
dc.identifier.emailShih, K: kshih@hku.hken_US
dc.identifier.emailLu, X: xingwen@hku.hk-
dc.identifier.authorityShih, K=rp00167en_US
dc.description.naturelink_to_OA_fulltext-
dc.identifier.doi10.1061/9780784412121.407-
dc.identifier.hkuros205659en_US
dc.identifier.spage3968-
dc.identifier.epage3977-
dc.publisher.placeUnited States-
dc.description.otherThe 2012 GeoCongress, Oakland, CA., 25-29 March 2012. In GeoCongress 2012: State of the Art and Practice in Geotechnical Engineering, 2012, p. 3968-3977-

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