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Article: Formation of nickel and copper ferrites in ceramics: a potential reaction in the reuse of iron-rich sludge incineration ash

TitleFormation of nickel and copper ferrites in ceramics: a potential reaction in the reuse of iron-rich sludge incineration ash
Authors
KeywordsCeramic
Hazardous metal
Incineration ash
Sludge
Spinel
Issue Date2012
PublisherTaylor & Francis. The Journal's web site is located at http://www.tandf.co.uk/journals/titles/09593330.asp
Citation
Environmental Technology, 2012, v. 33 n. 22, p. 2511-2516 How to Cite?
AbstractThis study investigates potential solid-state reactions for the stabilization of hazardous metals when reusing the incineration ash from chemically enhanced primary treatment (CEPT) sludge to fabricate ceramic products. Nickel and copper were used as examples of hazardous metals, and the iron content in the reaction system was found to play a major role in incorporating these hazardous metals into their ferrite phases (NiFe 2O4 and CuFe2O4). The results from three-hour sintering experiments on NiO + Fe2O3 and CuO + Fe2O3 systems clearly demonstrate the potential for initiating metal incorporation mechanisms using an iron-containing precursor at attainable ceramic sintering temperatures (above 750°C). Both ferrite phases were examined using a prolonged leaching experiment modified from the widely used toxicity characteristic leaching procedure (TCLP) to evaluate their long-term metal leachability. The leaching results indicate that both the NiFe2O4 and the CuFe2O4 products were significantly superior to their oxide forms in immobilizing hazardous metals. © 2012 Taylor and Francis.
Persistent Identifierhttp://hdl.handle.net/10722/159459
ISSN
2015 Impact Factor: 1.76
2015 SCImago Journal Rankings: 0.640
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorShih, Ken_US
dc.date.accessioned2012-08-16T05:50:00Z-
dc.date.available2012-08-16T05:50:00Z-
dc.date.issued2012en_US
dc.identifier.citationEnvironmental Technology, 2012, v. 33 n. 22, p. 2511-2516en_US
dc.identifier.issn0959-3330-
dc.identifier.urihttp://hdl.handle.net/10722/159459-
dc.description.abstractThis study investigates potential solid-state reactions for the stabilization of hazardous metals when reusing the incineration ash from chemically enhanced primary treatment (CEPT) sludge to fabricate ceramic products. Nickel and copper were used as examples of hazardous metals, and the iron content in the reaction system was found to play a major role in incorporating these hazardous metals into their ferrite phases (NiFe 2O4 and CuFe2O4). The results from three-hour sintering experiments on NiO + Fe2O3 and CuO + Fe2O3 systems clearly demonstrate the potential for initiating metal incorporation mechanisms using an iron-containing precursor at attainable ceramic sintering temperatures (above 750°C). Both ferrite phases were examined using a prolonged leaching experiment modified from the widely used toxicity characteristic leaching procedure (TCLP) to evaluate their long-term metal leachability. The leaching results indicate that both the NiFe2O4 and the CuFe2O4 products were significantly superior to their oxide forms in immobilizing hazardous metals. © 2012 Taylor and Francis.-
dc.languageengen_US
dc.publisherTaylor & Francis. The Journal's web site is located at http://www.tandf.co.uk/journals/titles/09593330.asp-
dc.relation.ispartofEnvironmental Technologyen_US
dc.subjectCeramic-
dc.subjectHazardous metal-
dc.subjectIncineration ash-
dc.subjectSludge-
dc.subjectSpinel-
dc.titleFormation of nickel and copper ferrites in ceramics: a potential reaction in the reuse of iron-rich sludge incineration ashen_US
dc.typeArticleen_US
dc.identifier.emailShih, K: kshih@hkucc.hku.hken_US
dc.identifier.authorityShih, K=rp00167en_US
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1080/09593330.2012.679694-
dc.identifier.pmid23437648-
dc.identifier.scopuseid_2-s2.0-84871867130-
dc.identifier.hkuros205548en_US
dc.identifier.volume33-
dc.identifier.issue22-
dc.identifier.spage2511-
dc.identifier.epage2516-
dc.identifier.isiWOS:000311788000006-
dc.publisher.placeUnited Kingdom-

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