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Platinum recovery from Industrial Process Solutions by Electrodepo-sition-Redox Replacement

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Halli, Petteri
dc.contributor.author Heikkinen, Joonas
dc.contributor.author Elomaa, Heini
dc.contributor.author Wilson, Benjamin
dc.contributor.author Jokinen, Ville
dc.contributor.author Yliniemi, Kirsi
dc.contributor.author Franssila, Sami
dc.contributor.author Lundström, Mari
dc.date.accessioned 2018-11-09T13:06:00Z
dc.date.available 2018-11-09T13:06:00Z
dc.date.issued 2018-09-20
dc.identifier.citation Halli , P , Heikkinen , J , Elomaa , H , Wilson , B , Jokinen , V , Yliniemi , K , Franssila , S & Lundström , M 2018 , ' Platinum recovery from Industrial Process Solutions by Electrodepo-sition-Redox Replacement ' ACS SUSTAINABLE CHEMISTRY AND ENGINEERING , vol 6 , no. 11 , pp. 14631–14640 . DOI: 10.1021/ acssuschemeng.8b03224 en
dc.identifier.issn 2168-0485
dc.identifier.other PURE UUID: 568a8df5-6d93-4957-826f-9b088aa77b60
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/platinum-recovery-from-industrial-process-solutions-by-electrodepositionredox-replacement(568a8df5-6d93-4957-826f-9b088aa77b60).html
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/29318930/CHEM_Halli_et_al_Platinum_Recovery_acssuschemeng_2018.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/34606
dc.description.abstract In the current study, platinum - present as a negligible component (below 1 ppb, the detection limit of the HR-ICP-MS at the dilutions used) in real industrial hydrometallurgical process solutions was recovered by an electrodeposition − redox replacement (EDRR) method on pyrolysed carbon (PyC) electrode, a method not earlier applied to metal recovery. The recovery parameters of the EDRR process were initially investigated using a synthetic nickel electrolyte solution ([Ni] = 60 g/L, [Ag] = 10 ppm, [Pt] = 20 ppm, [H2SO4] = 10 g/L) and the results demonstrated an extraordinary increase of 3·105 in the [Pt]/[Ni] on the electrode surface cf. synthetic solution. EDRR recovery of platinum on PyC was also tested with two real industrial process solutions that contained a complex multi-metal solution matrix: Ni as the major component (>140 g/L) and very low contents of Pt, Pd and Ag (i.e. <1 ppb, 117 ppb and 4 ppb, respectively). The selectivity of Pt recovery by EDRR on the PyC electrode was found to be significant – nanoparticles deposited on the electrode surface comprised on average of 90 wt-% platinum and a [Pt]/[Ni] enrichment ratio of 1011 compared to the industrial hydrometallurgical solution. Furthermore, other precious metallic elements like Pd and Ag could also be enriched on the PyC electrode surface using the same methodology. This paper demonstrates a remarkable advancement in the recovery of trace amounts of platinum from real industrial solutions that are not currently considered as a source of Pt metal. en
dc.format.extent 14631–14640
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries Volume 6, issue 11 en
dc.rights openAccess en
dc.subject.other Electrochemistry en
dc.subject.other Metals and Alloys en
dc.subject.other Materials Chemistry en
dc.subject.other Surfaces, Coatings and Films en
dc.subject.other Process Chemistry and Technology en
dc.subject.other 216 Materials engineering en
dc.subject.other 221 Nanotechnology en
dc.subject.other 116 Chemical sciences en
dc.subject.other 218 Environmental engineering en
dc.subject.other Metals en
dc.subject.other Industrial processes en
dc.subject.other Mining and minerals engineering en
dc.title Platinum recovery from Industrial Process Solutions by Electrodepo-sition-Redox Replacement en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Hydrometallurgy and Corrosion
dc.contributor.department Microfabrication
dc.contributor.department Department of Chemical and Metallurgical Engineering
dc.contributor.department Department of Chemistry and Materials Science
dc.subject.keyword Circular Economy
dc.subject.keyword Critical Precious Metals
dc.subject.keyword Electrochemistry
dc.subject.keyword Green Chemistry
dc.subject.keyword Electrochemically Assisted Cementation
dc.subject.keyword Metals and Alloys
dc.subject.keyword Materials Chemistry
dc.subject.keyword Surfaces, Coatings and Films
dc.subject.keyword Process Chemistry and Technology
dc.subject.keyword 216 Materials engineering
dc.subject.keyword 221 Nanotechnology
dc.subject.keyword 116 Chemical sciences
dc.subject.keyword 218 Environmental engineering
dc.subject.keyword Metals
dc.subject.keyword Industrial processes
dc.subject.keyword Mining and minerals engineering
dc.identifier.urn URN:NBN:fi:aalto-201811095647
dc.identifier.doi 10.1021/ acssuschemeng.8b03224
dc.type.version publishedVersion

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