Reduction of Pb, Zn and Cd-availability from tailings and contaminated soils by the application of lignite fly ash

Stouraiti, C; Xenidis, A; Paspaliaris, I

dc.contributor.author	Stouraiti, C	en
dc.contributor.author	Xenidis, A	en
dc.contributor.author	Paspaliaris, I	en
dc.date.accessioned	2014-03-01T01:18:17Z
dc.date.available	2014-03-01T01:18:17Z
dc.date.issued	2002	en
dc.identifier.issn	0049-6979	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14917
dc.subject	Cadmium	en
dc.subject	EDTA	en
dc.subject	Lead	en
dc.subject	Lignite fly ash	en
dc.subject	Stabilization	en
dc.subject	TCLP	en
dc.subject	Toxicity	en
dc.subject	Zinc	en
dc.subject.classification	Environmental Sciences	en
dc.subject.classification	Meteorology & Atmospheric Sciences	en
dc.subject.classification	Water Resources	en
dc.subject.other	Contamination	en
dc.subject.other	Fly ash	en
dc.subject.other	Heavy metals	en
dc.subject.other	pH	en
dc.subject.other	Soils	en
dc.subject.other	Oxidic tailings samples	en
dc.subject.other	Pollution	en
dc.subject.other	cadmium	en
dc.subject.other	carbonic acid	en
dc.subject.other	heavy metal	en
dc.subject.other	hydroxide	en
dc.subject.other	lead	en
dc.subject.other	lignite	en
dc.subject.other	oxide	en
dc.subject.other	zinc	en
dc.subject.other	bioavailability	en
dc.subject.other	fly ash	en
dc.subject.other	lignite	en
dc.subject.other	soil pollution	en
dc.subject.other	tailings	en
dc.subject.other	article	en
dc.subject.other	controlled study	en
dc.subject.other	experimentation	en
dc.subject.other	extraction	en
dc.subject.other	fly ash	en
dc.subject.other	metal binding	en
dc.subject.other	pH	en
dc.subject.other	regulatory mechanism	en
dc.subject.other	soil pollution	en
dc.subject.other	soil treatment	en
dc.subject.other	standard	en
dc.subject.other	toxicity testing	en
dc.subject.other	Fraxinus	en
dc.title	Reduction of Pb, Zn and Cd-availability from tailings and contaminated soils by the application of lignite fly ash	en
heal.type	journalArticle	en
heal.identifier.primary	10.1023/A:1015507017799	en
heal.identifier.secondary	http://dx.doi.org/10.1023/A:1015507017799	en
heal.language	English	en
heal.publicationDate	2002	en
heal.abstract	The effectiveness of lignite fly ash for stabilization of Pb, Zn and Cd in tailings and contaminated soils was examined. Fly ash was mixed with the contaminated soil or oxidic tailings samples at various doses and pot experiments were performed. The effectiveness of stabilization was mainly evaluated by the standard US EPA TCLP toxicity test. The 5-stage sequential extraction procedure was also applied to determine the form of contaminants in the fly ash amended soil or tailings samples. Complementary EDTA extraction tests were also carried out. The fly ash treatment resulted in the reduction of TCLP solubility of Pb, Zn and Cd to below the respective regulatory limits at 5 and 10% w/w fly ash addition rates in tailings and soil, respectively. Speciation of lead, in the treated soil and tailings samples indicated that there was a significant transition of the heavy metals form from the exchangeable and carbonate fractions to reducible and residual, suggesting that the potential mechanisms of heavy metals retention are, apart from increase of pH, sorption on the oxides and hydroxides surfaces and binding with the hydrated fly ash compounds.	en
heal.publisher	KLUWER ACADEMIC PUBL	en
heal.journalName	Water, Air, and Soil Pollution	en
dc.identifier.doi	10.1023/A:1015507017799	en
dc.identifier.isi	ISI:000175749400016	en
dc.identifier.volume	137	en
dc.identifier.issue	1-4	en
dc.identifier.spage	247	en
dc.identifier.epage	265	en