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Electroremediation of PCB contaminated soil combined with iron nanoparticles: effect of the soil type

2015Journal article Restricted access
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datacite.subject.sdg11:Cidades e Comunidades Sustentáveispt_PT
dc.contributor.authorGomes, Helena I.
dc.contributor.authorFerreira, Célia
dc.contributor.authorOttosen, Lisbeth M.
dc.contributor.authorRibeiro, Alexandra B.
dc.date.accessioned2023-07-04T13:56:46Z
dc.date.available2023-07-04T13:56:46Z
dc.date.issued2015
dc.description.abstractPolychlorinated biphenyls (PCB) are carcinogenic and persistent organic pollutants that accumulate in soils and sediments. Currently, there is no cost-effective and sustainable remediation technology for these contaminants. In this work, a new combination of electrodialytic remediation and zero valent iron particles in a two-compartment cell is tested and compared to a more conventional combination of electrokinetic remediation and nZVI in a three-compartment cell. In the new two-compartment cell, the soil is suspended and stirred simultaneously with the addition of zero valent iron nanoparticles. Remediation experiments are made with two different historically PCB contaminated soils, which differ in both soil composition and contamination source. Soil 1 is a mix of soils with spills of transformer oils, while Soil 2 is a superficial soil from a decommissioned school where PCB were used as windows sealants. Saponin, a natural surfactant, was also tested to increase the PCB desorption from soils and enhance dechlorination. Remediation of Soil 1 (with highest pH, carbonate content, organic matter and PCB concentrations) obtained the maximum 83% and 60% PCB removal with the two-compartment and the three-compartment cell, respectively. The highest removal with Soil 2 were 58% and 45%, in the twocompartment and the three-compartment cell, respectively, in the experiments without direct current. The pH of the soil suspension in the two-compartment treatment appears to be a determining factor for the PCB dechlorination, and this cell allowed a uniform distribution of the nanoparticles in the soil, while there was iron accumulation in the injection reservoir in the three-compartment cell.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.chemosphere.2015.03.007pt_PT
dc.identifier.issn0045-6535
dc.identifier.urihttp://hdl.handle.net/10400.2/14215
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.subjectElectroremediationpt_PT
dc.subjectnZVIpt_PT
dc.subjectPolychlorinated biphenylspt_PT
dc.subjectPCBpt_PT
dc.subjectContaminated soilpt_PT
dc.titleElectroremediation of PCB contaminated soil combined with iron nanoparticles: effect of the soil typept_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage163pt_PT
oaire.citation.startPage157pt_PT
oaire.citation.titleChemospherept_PT
person.familyNameFerreira
person.givenNameCélia
person.identifier.ciencia-id931E-FBDE-2098
person.identifier.orcid0000-0002-7456-2538
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicatione30010dd-0512-4da6-a0c9-910b47f18b4f
relation.isAuthorOfPublication.latestForDiscoverye30010dd-0512-4da6-a0c9-910b47f18b4f

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