The use of municipal sewage sludge for the stabilization of soil contaminated by mining activities

Theodoratos, P; Moirou, A; Xenidis, A; Paspaliaris, I

dc.contributor.author	Theodoratos, P	en
dc.contributor.author	Moirou, A	en
dc.contributor.author	Xenidis, A	en
dc.contributor.author	Paspaliaris, I	en
dc.date.accessioned	2014-03-01T01:15:56Z
dc.date.available	2014-03-01T01:15:56Z
dc.date.issued	2000	en
dc.identifier.issn	0304-3894	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/13836
dc.subject	sewage sludge	en
dc.subject	contaminated soil	en
dc.subject	stabilization	en
dc.subject	toxicity	en
dc.subject	heavy metals	en
dc.subject.classification	Engineering, Environmental	en
dc.subject.classification	Engineering, Civil	en
dc.subject.classification	Environmental Sciences	en
dc.subject.other	AMENDED SOIL	en
dc.subject.other	SEQUENTIAL EXTRACTION	en
dc.subject.other	HEAVY-METALS	en
dc.subject.other	COMPOST	en
dc.title	The use of municipal sewage sludge for the stabilization of soil contaminated by mining activities	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S0304-3894(00)00243-0	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S0304-3894(00)00243-0	en
heal.language	English	en
heal.publicationDate	2000	en
heal.abstract	The ability of municipal sewage sludge to immobilize Pb, Zn and Cd contained in contaminated soil originating from a former mining area in Lavrion, Greece was investigated. The soil was cured with sewage sludge in various proportions. The stabilization was evaluated primarily by applying chemical tests and complemented by the performance of additional biological tests. Application of the U.S. EPA Toxicity Characteristic Leaching Procedure (TCLP) on the stabilized mixtures proved that Pb, Zn and Cd solubility was reduced by 84%, 64% and 76%, respectively, at 15% w/w sludge addition, while a 10% w/w addition was sufficient to reduce Pb solubility below the U.S, EPA TCLP regulatory limit. The results of the extraction using EDTA solution showed the same trend, resulting in 26%, 36% and 53% reduction in the Pb, Zn and Cd extractable fractions, respectively. Speciation analysis of the treated soils revealed a significant decrease in the mobile fractions of heavy metals, which was attributed to their retention in sewage sludge by adsorption and organic complexation mechanisms. For the assessment of possible phytotoxicity, experiments including growing dwarf brans in the treated soil was carried out. It was Found that sewage sludge addition had a positive effect on plant growth. Furthermore, the Pb and Zn uptake of plant leaves and roots was reduced, while Cd uptake was unaffected by the sludge treatment. The results of this study support the hypothesis that municipal sewage sludge is a potential effective stabilizing agent for contaminated soil containing Pb, Zn and Cd. (C) 2000 Elsevier Science B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	JOURNAL OF HAZARDOUS MATERIALS	en
dc.identifier.doi	10.1016/S0304-3894(00)00243-0	en
dc.identifier.isi	ISI:000089298200013	en
dc.identifier.volume	77	en
dc.identifier.issue	1-3	en
dc.identifier.spage	177	en
dc.identifier.epage	191	en