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Kinetics of electrodialytic extraction of Pb and soil cations from a slurry of contaminated soil fines

2006Journal article Restricted access
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datacite.subject.sdg11:Cidades e Comunidades Sustentáveispt_PT
dc.contributor.authorJensen, Pernille E.
dc.contributor.authorOttosen, Lisbeth M.
dc.contributor.authorFerreira, Célia
dc.contributor.authorVillumsen, Arne
dc.date.accessioned2023-06-30T14:52:54Z
dc.date.available2023-06-30T14:52:54Z
dc.date.issued2006
dc.description.abstractThe objective of this work was to investigate the kinetics of Pb-removal from soil fines during electrodialytic remediation in suspension, and study the simultaneous dissolution of common soil cations (Al, Ca, Fe, Mg, Mn, Na and K). This was done to evaluate the possibilities within control of the remediation process to leave a final product suitable for reuse. The Pb-remediation process could be divided into four phases: (1) a “lag-phase”, (2) a period with a high removal rate (7.4 mg/day in average at 40 mA), (3) a period with a low removal rate, and (4) a period where no further Pb-removal was obtained. During the first phase, dissolution of carbonates was the prevailing process, resulting in a corresponding loss of soil mass. During this phase, the investigated ions accounted for the major current transfer, while, as remediation proceeded, hydrogen ions increasingly dominated the transfer. During phase (3) the high conductivity and low voltage suggested that removal may be accelerated by increasing the current density. Overall, 97% of the Pb could be extracted, reducing the final Pb-concentration to 25 mg/kg. The order of removal rates was: Ca > Pb > Mn > Mg > K > (Al and Fe).pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.jhazmat.2006.05.073pt_PT
dc.identifier.issn0304-3894
dc.identifier.urihttp://hdl.handle.net/10400.2/14153
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.subjectCationspt_PT
dc.subjectElectrodialysispt_PT
dc.subjectPbpt_PT
dc.subjectRemediationpt_PT
dc.subjectSoil washingpt_PT
dc.titleKinetics of electrodialytic extraction of Pb and soil cations from a slurry of contaminated soil finespt_PT
dc.title.alternativeVillumsen apt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage499pt_PT
oaire.citation.startPage493pt_PT
oaire.citation.titleJournal of Hazardous Materialspt_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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