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Electrodialytic remediation of of polychlorinated biphenyls contaminated soil with iron nanoparticles and two different surfactants

2014Journal 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.accessioned2023-06-30T11:29:27Z
dc.date.available2023-06-30T11:29:27Z
dc.date.issued2014
dc.description.abstractPolychlorinated biphenyls (PCB) are persistent organic pollutants (POP) that strongly adsorb in soils and sediments. There is a need to develop new and cost-effective solutions for the remediation of PCB contaminated soils. The suspended electrodialytic remediation combined with zero valent iron nanoparticles (nZVI) could be a competitive alternative to the commonly adapted solutions of incineration or landfilling. Surfactants can enhance the PCB desorption, dechlorination, and the contaminated soil cleanup. In this work, two different surfactants (saponin and Tween 80) were tested to enhance PCB desorption and removal from a soil sampled at a polluted site, in a two-compartment cell where the soil was stirred in a slurry with 1% surfactant, 10 mL of nZVI commercial suspension, and a voltage gradient of 1 V cm1 . The highest PCB removal was obtained with saponin. Higher chlorinated PCB congeners (penta, hexa, hepta and octachlorobiphenyl) showed removal percentages between 9% and 96%, and the congeners with highest removal were PCB138, PCB153 and PCB180. The use of low level direct current enhanced PCB removal, especially with saponin. Electrodechlorination of PCB with surfactants and nZVI showed encouraging tendencies and a base is thus formed for further optimization towards a new method for remediation of PCB polluted soils.pt_PT
dc.description.sponsorshipThis work was funded by the European Regional Development Fund (ERDF) through COMPETE – Operational Programme for Competitiveness Factors (OPCF), by Portuguese National funds through ‘‘FCT – Fundação para a Ciência e a Tecnologia’’ under Project «PTDC/AGR-AAM/101643/2008 NanoDC», by FP7-PEOPLE-IRSES2010-269289-ELECTROACROSS and by the research Grant SFRH/ BD/76070/2011. Prof. Jorge Varejão and Helena Silva are acknowledged for GC analysis and Sabrina Madsen for ICP analysis. NANO IRON, s.r.o. kindly provided NANOFER 25S samples.
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.jcis.2014.07.022pt_PT
dc.identifier.issn0021-9797
dc.identifier.urihttp://hdl.handle.net/10400.2/14149
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.subjectElectrodialytic remediationpt_PT
dc.subjectnZVIpt_PT
dc.subjectSurfactantspt_PT
dc.subjectSaponinpt_PT
dc.subjectTween 80pt_PT
dc.subjectPCBpt_PT
dc.titleElectrodialytic remediation of of polychlorinated biphenyls contaminated soil with iron nanoparticles and two different surfactantspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage195pt_PT
oaire.citation.startPage189pt_PT
oaire.citation.titleJ Colloid and Interface Sciencept_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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