Assessment of chromium biostabilization in contaminated soils using standard leaching and sequential extraction techniques

Papassiopi, N; Kontoyianni, A; Vaxevanidou, K; Xenidis, A

dc.contributor.author	Papassiopi, N	en
dc.contributor.author	Kontoyianni, A	en
dc.contributor.author	Vaxevanidou, K	en
dc.contributor.author	Xenidis, A	en
dc.date.accessioned	2014-03-01T01:29:53Z
dc.date.available	2014-03-01T01:29:53Z
dc.date.issued	2009	en
dc.identifier.issn	0048-9697	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19395
dc.subject	Chromate	en
dc.subject	Contaminated soils	en
dc.subject	Iron reducing bacteria	en
dc.subject	Sequential extraction procedure	en
dc.subject	Stabilization	en
dc.subject.classification	Environmental Sciences	en
dc.subject.other	Chromates	en
dc.subject.other	Chromium	en
dc.subject.other	Chromium compounds	en
dc.subject.other	Contamination	en
dc.subject.other	Environmental Protection Agency	en
dc.subject.other	Extraction	en
dc.subject.other	Leaching	en
dc.subject.other	Magnesium printing plates	en
dc.subject.other	Metal recovery	en
dc.subject.other	Positive ions	en
dc.subject.other	Remediation	en
dc.subject.other	Soil pollution	en
dc.subject.other	Soil surveys	en
dc.subject.other	Soils	en
dc.subject.other	Stabilization	en
dc.subject.other	Standards	en
dc.subject.other	Vegetation	en
dc.subject.other	Water treatment	en
dc.subject.other	Alkaline digestions	en
dc.subject.other	BCR sequential extractions	en
dc.subject.other	Before and after	en
dc.subject.other	Bioreduction	en
dc.subject.other	Chromium speciations	en
dc.subject.other	Contaminated soils	en
dc.subject.other	Extraction techniques	en
dc.subject.other	Leaching tests	en
dc.subject.other	Sequential extraction procedure	en
dc.subject.other	Sequential extraction techniques	en
dc.subject.other	Soil samples	en
dc.subject.other	Stabilization treatments	en
dc.subject.other	Chemicals removal (water treatment)	en
dc.subject.other	chromium	en
dc.subject.other	iron	en
dc.subject.other	manganese	en
dc.subject.other	assessment method	en
dc.subject.other	bioremediation	en
dc.subject.other	chromium	en
dc.subject.other	extraction method	en
dc.subject.other	iron-reducing bacterium	en
dc.subject.other	leaching	en
dc.subject.other	reduction	en
dc.subject.other	soil pollution	en
dc.subject.other	soil remediation	en
dc.subject.other	stabilization	en
dc.subject.other	article	en
dc.subject.other	controlled study	en
dc.subject.other	Desulfuromonas	en
dc.subject.other	Desulfuromonas palmitatis	en
dc.subject.other	extraction	en
dc.subject.other	fractionation	en
dc.subject.other	leaching	en
dc.subject.other	priority journal	en
dc.subject.other	soil	en
dc.subject.other	Biodegradation, Environmental	en
dc.subject.other	Chemical Fractionation	en
dc.subject.other	Chromium	en
dc.subject.other	Desulfuromonas	en
dc.subject.other	Environmental Monitoring	en
dc.subject.other	Hydrogen-Ion Concentration	en
dc.subject.other	Risk Assessment	en
dc.subject.other	Soil Microbiology	en
dc.subject.other	Soil Pollutants	en
dc.subject.other	Solubility	en
dc.subject.other	Desulfuromonas palmitatis	en
dc.title	Assessment of chromium biostabilization in contaminated soils using standard leaching and sequential extraction techniques	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.scitotenv.2008.09.020	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.scitotenv.2008.09.020	en
heal.language	English	en
heal.publicationDate	2009	en
heal.abstract	The iron reducing microorganism Desulfuromonas palmitatis was evaluated as potential biostabilization agent for the remediation of chromate contaminated soils. D. palmitatis were used for the treatment of soil samples artificially contaminated with Cr(VI) at two levels, i.e. 200 and 500 mg kg(-1). The efficiency of the treatment was evaluated by applying several standard extraction techniques on the soil samples before and after treatment, such as the EN12457 standard leaching test, the US EPA 3060A alkaline digestion method and the BCR sequential extraction procedure. The water soluble chromium as evaluated with the EN leaching test, was found to decrease after the biostabilization treatment from 13 to less than 0.5 mg kg(-1) and from 120 to 5.6 mg kg(-1) for the soil samples contaminated with 200 and 500 mg Cr(VI) per kg soil respectively. The BCR sequential extraction scheme, although not providing accurate estimates about the initial chromium speciation in contaminated soils, proved to be a useful tool for monitoring the relative changes in element partitioning, as a consequence of the stabilization treatment. After bioreduction, the percentage of chromium retained in the two least soluble BCR fractions, i.e. the "oxidizable" and "residual" fractions, increased from 54 and 73% to more than 96% in both soils. (C) 2008 Elsevier B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Science of the Total Environment	en
dc.identifier.doi	10.1016/j.scitotenv.2008.09.020	en
dc.identifier.isi	ISI:000262076100019	en
dc.identifier.volume	407	en
dc.identifier.issue	2	en
dc.identifier.spage	925	en
dc.identifier.epage	936	en