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Recovery of platinum from a spent automotive catalyst through chloride leaching and solvent extraction

2021-06Journal article Open access
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dc.contributor.authorMéndez, Ana
dc.contributor.authorNogueira, Carlos
dc.contributor.authorPaiva, A. P.
dc.date.accessioned2021-12-16T16:27:55Z
dc.date.available2021-12-16T16:27:55Z
dc.date.issued2021-06
dc.description.abstractABSTRACT: Considering economics and environmental sustainability, recycling of critical metals from end-of-life devices should be a priority. In this work the hydrometallurgical treatment of a spent automotive catalytic converter (SACC) using HCl with CaCl2 as a leaching medium, and solvent extraction (SX) with a thiodiglycolamide derivative, is reported. The aim was to develop a leaching scheme allowing high Pt recoveries and minimizing Al dissolution, facilitating the application of SX. The replacement of part of HCl by CaCl2 in the leaching step is viable, without compromising Pt recovery (in the range 75-85%), as found for the mixture 2 M CaCl2 + 8 M HCl when compared to 11.6 M HCl. All leaching media showed good potential to recover Ce, particularly for higher reaction times and temperatures. Regarding SX, results achieved with a model solution were promising, but SX for Pt separation from the real SACC solution did not work as expected. For the adopted experimental conditions, the tested thiodiglycolamide derivative in toluene revealed a very good loading performance for both Pt and Fe, but Fe removal and Pt stripping from the organic phases after contact with the SACC solution were not successfully accomplished. Hence, the reutilization of the organic solvent needs improvement.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationMéndez, Ana... [et.al.] - Recovery of platinum from a spent automotive catalyst through chloride leaching and solvent extraction. In: Recycling, 2021, Vol. 6 (2), article nº 27pt_PT
dc.identifier.doi10.3390/recycling6020027pt_PT
dc.identifier.eissn2313-4321
dc.identifier.urihttp://hdl.handle.net/10400.9/3636
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationCentro de Química Estrutural
dc.relation.publisherversionhttps://doi.org/10.3390/recycling6020027pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectMaterialspt_PT
dc.subjectPlatinum-group metalspt_PT
dc.subjectCeriumpt_PT
dc.subjectHydrometallurgical recoverypt_PT
dc.subjectLiquid-liquid extractionpt_PT
dc.subjectRecyclingpt_PT
dc.titleRecovery of platinum from a spent automotive catalyst through chloride leaching and solvent extractionpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleCentro de Química Estrutural
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00100%2F2020/PT
oaire.citation.issue2pt_PT
oaire.citation.titleRecyclingpt_PT
oaire.citation.volume6pt_PT
oaire.fundingStream6817 - DCRRNI ID
person.familyNameNogueira
person.familyNamePaiva
person.givenNameCarlos
person.givenNameAna Paula
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.ridA-4926-2013
person.identifier.ridA-2064-2008
person.identifier.scopus-author-id7006686159
person.identifier.scopus-author-id7102683760
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationb4222458-c0fc-4926-9d9a-e3cf9ae1e7e3
relation.isAuthorOfPublicationf31cb44a-7501-4c39-835b-e86aeb4b63a9
relation.isAuthorOfPublication.latestForDiscoveryb4222458-c0fc-4926-9d9a-e3cf9ae1e7e3
relation.isProjectOfPublicationc6303804-9863-45db-b216-05a20458b7e1
relation.isProjectOfPublication.latestForDiscoveryc6303804-9863-45db-b216-05a20458b7e1

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