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LONG-TERM stability of arsenic in iron amended contaminated soil

hal.structure.identifierLuleå University of Technology = Luleå Tekniska Universitet [LUT]
dc.contributor.authorKUMPIENE, Jurate
hal.structure.identifierLuleå University of Technology = Luleå Tekniska Universitet [LUT]
dc.contributor.authorCARABANTE, Ivan
hal.structure.identifierLuleå University of Technology = Luleå Tekniska Universitet [LUT]
dc.contributor.authorKASIULIENE, Alfreda
hal.structure.identifierInstitut Ecocitoyen pour la Connaissance des Pollutions [Fos-sur-Mer]
dc.contributor.authorAUSTRUY, Annabelle
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorMENCH, Michel
dc.date.issued2021
dc.identifier.issn0269-7491
dc.description.abstractEnThis study aimed at elucidating the long-term efficiency of soil remediation where chemical stabilization of arsenic (As) contaminated soil using zerovalent iron (Fe) amendments was applied. A combination of chemical extraction and extended X-Ray absorption fine structure (EXAFS) spectroscopy technique was applied on soils collected from five laboratory and field experiments in Sweden and France. All soils were treated with 1 wt% of zerovalent Fe grit 2e15 years prior to the sampling. The results indicate that all studied soils, despite the elapsed time since their amendment with Fe grit, had substantial amounts of ferrihydrite and/or lepidocrocite. These metastable and the most reactive Fe (oxyhydr)oxides (mainly ferrihydrite) were still present in substantial amounts even in the soil that was treated 15 years prior to the sampling and contributed most to the As immobilisation in the amended soils. This increases confidence in the long-term efficiency of As immobilisation using zerovalent Fe amendments. Both applied methods, sequential extraction and EXAFS, were in line for most of the samples in terms of their ability to highlight As immobilisation by poorly crystalline Fe phases.
dc.language.isoen
dc.publisherElsevier
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subject.enSoil stabilization
dc.subject.enImmobilisation
dc.subject.enEXAFS
dc.subject.enSequential extraction
dc.subject.enZerovalent iron
dc.title.enLONG-TERM stability of arsenic in iron amended contaminated soil
dc.typeArticle de revue
dc.identifier.doi10.1016/j.envpol.2020.116017
dc.subject.halSciences de l'environnement
bordeaux.journalEnvironmental Pollution
bordeaux.page1-8
bordeaux.volume269
bordeaux.peerReviewedoui
hal.identifierhal-03281483
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03281483v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Environmental%20Pollution&rft.date=2021&rft.volume=269&rft.spage=1-8&rft.epage=1-8&rft.eissn=0269-7491&rft.issn=0269-7491&rft.au=KUMPIENE,%20Jurate&CARABANTE,%20Ivan&KASIULIENE,%20Alfreda&AUSTRUY,%20Annabelle&MENCH,%20Michel&rft.genre=article


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