Influence of polyoxometallates as additive on electro-winning of copper

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dc.authoridEhsani, Arman/0000-0002-1758-8694
dc.authoridYazici, Ersin Y./0000-0002-8711-0784
dc.authoridDeveci, Haci/0000-0003-4105-0912
dc.contributor.authorEhsani, Arman
dc.contributor.authorYazici, Ersin Y.
dc.contributor.authorDeveci, Haci
dc.date.accessioned2025-01-06T17:37:36Z
dc.date.available2025-01-06T17:37:36Z
dc.date.issued2016
dc.description.abstractIn this paper, the electro-winning of copper from synthetic copper sulphate solutions and the pregnant leach solution (PLS) derived from the leaching of e-waste was investigated in an attempt to reduce energy consumption by using a polyoxometallate (POM), ammonium metatungstate hydrate (AMTH) as a novel additive. Effect of addition of AMTH on the current efficiency, rate of copper deposition, deposit quality and morphology was studied. The current efficiency was determined to be 7% lower in the electro-winning of copper from the pregnant leach solution than that from the synthetic solution (84% vs 91%) presumably due to the presence of impurities (e.g. Fe) in the former. The addition of AMTH (50-100-200 mg/L) into the synthetic electrolyte solution was found to increase the current efficiency (by 3-8%) as well as the rate of copper deposition at the current densities tested (150-250-300 A/m(2)). Effect of AMTH on the surface morphology of copper deposit was also examined. Despite its beneficial effect on the current efficiency and rate of copper deposition, the deposit morphology tends to deteriorate (i.e. rough/dendritic texture) with increasing the concentration of AMTH in both PLS and synthetic copper sulphate solution. It can be inferred from the findings that AMTH can be used as an additive for reducing power consumption in electro-winning of copper from sulphate solutions. (C) 2016 Elsevier B.V. All rights reserved.
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK) [109M111]
dc.description.sponsorshipThe authors gratefully acknowledge the support of The Scientific and Technological Research Council of Turkey (TUBITAK) (Project no: 109M111). They greatly appreciate Mr. Fatih Erdemir (Metallurgical and Materials Engineering, KTU) for his help during microscopic examination of cathodes.
dc.identifier.doi10.1016/j.hydromet.2016.03.002
dc.identifier.endpage85
dc.identifier.issn0304-386X
dc.identifier.issn1879-1158
dc.identifier.scopus2-s2.0-84961204667
dc.identifier.scopusqualityQ1
dc.identifier.startpage79
dc.identifier.urihttps://doi.org/10.1016/j.hydromet.2016.03.002
dc.identifier.urihttps://hdl.handle.net/20.500.14669/2301
dc.identifier.volume162
dc.identifier.wosWOS:000376544300011
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Science Bv
dc.relation.ispartofHydrometallurgy
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241211
dc.subjectElectro-winning
dc.subjectElectrolysis
dc.subjectPolyoxometallate
dc.subjectCopper
dc.subjectE-waste
dc.subjectLeaching
dc.titleInfluence of polyoxometallates as additive on electro-winning of copper
dc.typeArticle

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