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Oxidative leaching process with cupric ion in hydrochloric acid mediafor recovery of Pd and Rh from spent catalytic converters

2014Journal article Open access
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dc.contributor.authorNogueira, Carlos
dc.contributor.authorPaiva, A. P.
dc.contributor.authorOliveira, Paula
dc.contributor.authorCosta, M. Clara
dc.contributor.authorCosta, Ana M. Rosa da
dc.date.accessioned2014-12-19T12:12:26Z
dc.date.available2014-12-19T12:12:26Z
dc.date.issued2014
dc.description.abstractThe recycling of platinum-group metals from wastes such as autocatalytic converters is getting growing attention due to the scarcity of these precious metals and the market pressure originated by increase of demand in current and emerging applications. Hydrometallurgical treatment of such wastes is an alternative way to the most usual pyrometallurgical processes based on smelter operations. This paper focuses on the development of a leaching process using cupric chloride as oxidising agent, in HCl media, for recovery of palladium and rhodium from a spent catalyst. The chloride media allows the adequate conditions for oxidising and solubilising the metals, as demonstrated by equilibrium calculations based on thermodynamic data. The experimental study of the leaching process revealed that Pd solubilisation is clearly easier than that of Rh. The factors temperature, time, and HCl and Cu2+ concentrations were significant regarding Pd and Rh leaching, the latter requiring higher factor values to achieve the same results. Leaching yields of 95% Pd and 86% Rh were achieved under optimised conditions (T = 80.C, t = 4 h,[HCl] = 6 M, [Cu2+] = 0.3 M).por
dc.identifier.citationNogueira, C.A.; Paiva, A.P.; Oliveira, P.C.; Costa, M.C.; Costa, A.M. Rosa da. - Oxidative leaching process with cupric ion in hydrochloric acid mediafor recovery of Pd and Rh from spent catalytic converters. In: Journal of Hazardous Materials, 2014, Vol. 278, p. 82-90por
dc.identifier.issn0304-3894
dc.identifier.urihttp://hdl.handle.net/10400.9/2557
dc.language.isoengpor
dc.publisherElsevierpor
dc.relation.publisherversionhttp://dx.doi.org/10.1016/j.jhazmat.2014.05.099por
dc.subjectHydrometallurgypor
dc.subjectRecyclingpor
dc.subjectOxidative leachingpor
dc.subjectCupric chlorideapor
dc.subjectPd-Rh catalystpor
dc.titleOxidative leaching process with cupric ion in hydrochloric acid mediafor recovery of Pd and Rh from spent catalytic converterspor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage90por
oaire.citation.startPage82por
oaire.citation.titleJournal of Hazardous Materialspor
oaire.citation.volume278por
person.familyNameNogueira
person.familyNamePaiva
person.familyNameOliveira
person.givenNameCarlos
person.givenNameAna Paula
person.givenNamePaula
person.identifier.ciencia-id011E-FCCD-4FA6
person.identifier.ciencia-idAB1D-468B-F3E9
person.identifier.orcid0000-0003-2949-5046
person.identifier.orcid0000-0003-3858-9386
person.identifier.orcid0000-0003-3770-2885
person.identifier.ridA-4926-2013
person.identifier.ridA-2064-2008
person.identifier.scopus-author-id7006686159
person.identifier.scopus-author-id7102683760
rcaap.rightsopenAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublicationb4222458-c0fc-4926-9d9a-e3cf9ae1e7e3
relation.isAuthorOfPublicationf31cb44a-7501-4c39-835b-e86aeb4b63a9
relation.isAuthorOfPublication7e11de2b-ad81-4e54-8d50-4dda59a84c47
relation.isAuthorOfPublication.latestForDiscovery7e11de2b-ad81-4e54-8d50-4dda59a84c47

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