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dc.contributor.authorPedersen, Kristine Bondo
dc.contributor.authorLejon, Tore
dc.contributor.authorJensen, Pernille E.
dc.contributor.authorOttosen, Lisbeth M.
dc.date.accessioned2018-08-31T08:11:53Z
dc.date.available2018-08-31T08:11:53Z
dc.date.issued2017-10-16
dc.description.abstract<p>Chemometrics was used to determine the influence of sediment properties and experimental settings for the electrodialytic removal (EDR) of Cu, Pb and Zn from six harbour sediments from Greenland and Norway. A Projection onto latent structures (PLS) model revealed that the most important sediment properties for achieving acidification (lag-phase, pH > 4), necessary for desorbing and mobilising metals in the polluted sediments, were buffer capacity and grain size distribution. Higher stirring rate reduced the acidification time, stressing the importance of thorough mixing of the sediment suspension to achieve a fast and uniform acidification.</p> <p>PLS models were calculated to determine the influence of sediment properties on the removal of metals during EDR, which was observed to vary depending on the targeted metal and the stage of the remediation. In general, buffer capacity, grain size distribution, element composition and metal partitioning were important for remediation efficiency and are important parameters for determining optimal experimental settings. In the fast removal phase (final pH 2–4), organic matter as well as stirring rate had increasing importance indicating oxidation and release of metals at this stage. Understanding the influence of sediment properties is important for determining experimental settings in accordance with the phase of EDR.en_US
dc.description.sponsorshipEnergi Norge ASen_US
dc.descriptionAccepted manuscript version. Published version available at <a href=https://doi.org/10.1016/j.jece.2017.10.031> https://doi.org/10.1016/j.jece.2017.10.031</a>. Accepted manuscript version, licensed <a href=http://creativecommons.org/licenses/by-nc-nd/4.0/> CC BY-NC-ND 4.0. </a>en_US
dc.identifier.citationPedersen, K.B., Lejon, T.S., Jensen, P.E. & Ottosen, L.M. (2017). The influence of sediment properties and experimental variables on the efficiency of electrodialytic removal of metals from sediment. Journal of Environmental Chemical Engineering, 5(6), 5312-5321. https://doi.org/10.1016/j.jece.2017.10.031en_US
dc.identifier.cristinIDFRIDAID 1528677
dc.identifier.doi10.1016/j.jece.2017.10.031
dc.identifier.issn2213-3437
dc.identifier.urihttps://hdl.handle.net/10037/13615
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.relation.journalJournal of Environmental Chemical Engineering
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/NORDSATS/195160/Norway/Northern Environmental Waste Management//en_US
dc.rights.accessRightsopenAccessen_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Kjemi: 440en_US
dc.subjectVDP::Mathematics and natural science: 400::Chemistry: 440en_US
dc.subjectChemometricsen_US
dc.subjectPlsen_US
dc.subjectEDREKRen_US
dc.subjectHeavy metalsen_US
dc.subjectSedimentsen_US
dc.titleThe influence of sediment properties and experimental variables on the efficiency of electrodialytic removal of metals from sedimenten_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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