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dc.contributor.authorPedersen, Kristine Bondo
dc.contributor.authorLejon, Tore
dc.contributor.authorOttosen, Lisbeth M.
dc.contributor.authorJensen, Pernille E.
dc.date.accessioned2016-03-16T07:40:17Z
dc.date.available2016-03-16T07:40:17Z
dc.date.issued2015-04-15
dc.description.abstractUsing multivariate design and modelling, optimal conditions for electrodialytic remediation (EDR) of heavy metals were determined for polluted harbour sediments from Hammerfest harbour located in the geographic Arctic region of Norway. The comparative importance of the variables; current density, remediation time, light/no light, the liquid-solid ratio and stirring rate of the sediment suspension were determined in 15 laboratory scale EDR experiments by projection to latent structures (PLS). The relation between the X matrix (experimental variables) and the Y matrix (removal efficiencies) was computed and variable importance in the projection was used to assess the influence of the experimental variables. Current density and remediation time proved to have the highest influence on the remediation of the heavy metals Cr, Cu, Ni, Pb and Zn in the studied experimental domain. In addition it was shown that excluding the acidification time improved the PLS model, indicating the importance of applying a limited experimental domain that covers the removal phases of each heavy metal in the specific sediment. Based on PLS modelling the optimal conditions for remediating the Hammerfest sediment was determined; operating in the experimental domain of 0.5-0.8 mA/cm2 and a remediation time after acidification of 450-570 hours met acceptable levels according to Norwegian sediment quality guidelinesen
dc.descriptionPublished version, also available at <a href=http://dx.doi.org/10.1080/09593330.2015.1028470>http://dx.doi.org/10.1080/09593330.2015.1028470</a>en_US
dc.identifier.citationEnvironmental technology 2015, 36(18):2364-2373en_US
dc.identifier.cristinIDFRIDAID 1275429
dc.identifier.doi10.1080/09593330.2015.1028470
dc.identifier.issn1479-487X
dc.identifier.urihttps://hdl.handle.net/10037/8974
dc.identifier.urnURN:NBN:no-uit_munin_8549
dc.language.isoengen_US
dc.publisherTaylor & Francisen_US
dc.relation.projectIDNorges forskningsråd: 195160en_US
dc.rights.accessRightsopenAccess
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Kjemi: 440::Miljøkjemi, naturmiljøkjemi: 446en_US
dc.subjectVDP::Mathematics and natural science: 400::Chemistry: 440::Environmental chemistry, natural environmental chemistry: 446en_US
dc.subjectchemometricsen_US
dc.subjectprojectionto latent structuresen_US
dc.subjectelectrodialytic remediationen_US
dc.subjectheavy metalsen_US
dc.subjectharbour sedimentsen_US
dc.titleScreening of variable importance for optimizing electrodialytic remediation of heavy metals from polluted harbour sedimentsen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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