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Simultaneous immobilization of metals and arsenic in acidic polluted soils near a copper smelter in central Chile

hal.structure.identifierUniversidad de Chile = University of Chile [Santiago] [UCHILE]
dc.contributor.authorCÁRCAMO, Valeska
hal.structure.identifierCentro de Investigación Minera y Metalúrgica
dc.contributor.authorBUSTAMANTE, Elena
hal.structure.identifierCentro de Investigación Minera y Metalúrgica
dc.contributor.authorTRANGOLAO, Elizabeth
hal.structure.identifierCentro de Investigación Minera y Metalúrgica
dc.contributor.authorDE LA FUENTE, Luz María
hal.structure.identifierBiodiversité, Gènes & Communautés [BioGeCo]
dc.contributor.authorMENCH, Michel
hal.structure.identifierCentro Regional de Estudios en Alimentos Saludables [CREAS]
dc.contributor.authorNEAMAN, Alexander
hal.structure.identifierCentro de Investigación Minera y Metalúrgica
dc.contributor.authorGINOCCHIO, Rosanna
dc.date.issued2012
dc.identifier.issn0944-1344
dc.description.abstractEn* Introduction : Acidic and metal(oid)-rich topsoils resulted after 34 years of continuous operations of a copper smelter in the Puchuncaví valley, central Chile. Currently, large-scale remediation actions for simultaneous in situ immobilization of metals and As are needed to reduce environmental risks of polluted soils. Aided phytostabilization is a cost-effective alternative, but adequate local available soil amendments have to be identified and management options have to be defined. * Materials and methods : Efficacy of seashell grit (SG), biosolids (B), natural zeolite (Z), and iron-activated zeolite (AZ), either alone or in mixtures, was evaluated for reducing metal (Cu and Zn) and As solubilization in polluted soils under laboratory conditions. Perennial ryegrass was used to test phytotoxicity of experimental substrates. * Results : Soil neutralization to a pH of 6.5 with SG, with or without incorporation of AZ, significantly reduces metal (Cu and Zn) solubilization without affecting As solubilization in soil pore water; furthermore, it eliminates phytotoxicity and excessive metal(oid) accumulation in aerial plant tissues. Addition of B or Z to SG-amended soil does not further reduce metal solubilization into soil pore water, but increase As solubilization due to excessive soil neutralization (pH > 6.5); however, no significant As increase occurs in aerial plant tissues. * Conclusion : Simultaneous in situ immobilization of metal(oid) in acidic topsoils is possible through aided phytostabilization.
dc.language.isoen
dc.publisherSpringer Verlag
dc.subject.ennatural zeolite
dc.subject.enbiosolids
dc.subject.enseashell grit
dc.subject.enmetal phytotoxicity
dc.subject.enryegrass
dc.title.enSimultaneous immobilization of metals and arsenic in acidic polluted soils near a copper smelter in central Chile
dc.typeArticle de revue
dc.identifier.doi10.1007/s11356-011-0673-3
dc.subject.halSciences de l'environnement/Environnement et Société
bordeaux.journalEnvironmental Science and Pollution Research
bordeaux.page1131-1143
bordeaux.volume19
bordeaux.issue4
bordeaux.peerReviewedoui
hal.identifierhal-02651613
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02651613v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Environmental%20Science%20and%20Pollution%20Research&rft.date=2012&rft.volume=19&rft.issue=4&rft.spage=1131-1143&rft.epage=1131-1143&rft.eissn=0944-1344&rft.issn=0944-1344&rft.au=C%C3%81RCAMO,%20Valeska&BUSTAMANTE,%20Elena&TRANGOLAO,%20Elizabeth&DE%20LA%20FUENTE,%20Luz%20Mar%C3%ADa&MENCH,%20Michel&rft.genre=article


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