Logo do repositório
 
Publicação

Membrane electrolysis for recovering Sb and Bi from elution solutions of ion-exchange resins used in copper electrorefining

2022-11-01Artigo científico Acesso aberto
Ver registo simples
dc.contributor.authorBarros, Kayo Santana
dc.contributor.authorMachado, André Luiz Vargas
dc.contributor.authorVielmo, Vicente Schaeffer
dc.contributor.authorVelizarov, Svetlozar
dc.contributor.authorFerreira, Jane Zoppas
dc.contributor.authorPérez–Herranz, Valentín
dc.contributor.authorBernardes, Andréa Moura
dc.contributor.institutionDQ - Departamento de Química
dc.contributor.institutionLAQV@REQUIMTE
dc.contributor.pblElsevier Science B.V., Amsterdam.
dc.date.accessioned2023-10-09T22:17:33Z
dc.date.available2025-02-10T01:31:50Z
dc.date.embargoedUntil2024-11-30
dc.date.issued2022-11-01
dc.descriptionFunding Information: The authors gratefully acknowledge the financial support given by the funding agencies Ministerio de Universidades de España (European Union - Next Generation EU), CNPq (Process 160320/2019-4), Cyted (Network 318RT0551), ERAMIN2 (Network Sb-RECMEMTEC, FINEP - Brazil, ANID - Chile, and Agencia Estatal de Investigación (AEI) – Spain), Dirección de Investigación Científica y Tecnológica (DICYT) of the Universidad de Santiago de Chile, UFRGS (BIC - IQR838393LRG), Agencia Estatal de Investigación (AEI) - Spain, through the project PCI2019-103535 (Co-funded by the European Regional Development Fund (FEDER), a way to build Europe). This study was financed in part by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil (CAPES) - Finance Code 001 (Process 88887.364537/2019-00). Publisher Copyright: © 2022 Elsevier B.V.
dc.description.abstractAntimony (Sb) and bismuth (Bi), which have been considered critical raw materials by the European Commission, cause inconveniences to copper production when they are present as impurities in copper electrorefining solutions. Therefore, ion-exchange resins to extract Sb and Bi from copper-containing electrolytes have typically been applied; after the adsorption of the metals, the elution step is conducted with an HCl solution to desorb them. In the present study, a novel membrane electrolysis system with a cation-exchange membrane was proposed to extract Sb and Bi ions from the elution solution, and a cyclic voltammetric study was carried out to evaluate the influence of the most important operating parameters on the process performance, such as Sb, Bi and HCl concentration, dilution factor of the solution, the presence of thiourea as a complexing agent, the presence of iron as an impurity, and temperature. The obtained voltammograms indicated that the simultaneous presence of the metals in solution alters considerably their electrodeposition and oxidation pattern when compared to the solutions with pure metals. The reactions of electrodeposition of both metals are not electrochemically reversible and the diffusion control for bismuth is greater than that for antimony. The increase in the concentration of Sb affects its electrodeposition kinetically, whereas that of Bi is affected both kinetically and thermodynamically. The increase in HCl concentration disfavors the electrodeposition of both metals. Diluting the solution reduces the energy consumption and prolongs the membrane lifespan. Increasing the temperature reduces the cathodic potential to deposit the metals but favors the hydrogen evolution reaction. The presence of iron as an impurity does not affect the electrodeposition of both metals, whereas the use of thiourea as a complexing agent must be avoided because it impairs their electrodeposition.en
dc.description.versionauthorsversion
dc.description.versionauthorsversion
dc.description.versionpublished
dc.format.extent14
dc.format.extent1389097
dc.format.extent681258
dc.identifier.doi10.1016/j.jelechem.2022.116867
dc.identifier.issn1572-6657
dc.identifier.otherPURE: 55699954
dc.identifier.otherPURE UUID: e3968661-0837-4632-89c5-3d20fa0b085c
dc.identifier.otherScopus: 85139591972
dc.identifier.otherWOS: 000877690800006
dc.identifier.otherORCID: /0000-0002-9446-0897/work/130847125
dc.identifier.urihttp://hdl.handle.net/10362/158788
dc.identifier.urlhttps://www.scopus.com/pages/publications/85139591972
dc.language.isoeng
dc.peerreviewedyes
dc.subjectAntimony
dc.subjectBismuth
dc.subjectCyclic voltammetry
dc.subjectElectrodeposition
dc.subjectThiourea
dc.subjectAnalytical Chemistry
dc.subjectGeneral Chemical Engineering
dc.subjectElectrochemistry
dc.subjectSDG 7 - Affordable and Clean Energy
dc.titleMembrane electrolysis for recovering Sb and Bi from elution solutions of ion-exchange resins used in copper electrorefiningen
dc.title.subtitleA cyclic voltammetric studyen
dc.typejournal article
degois.publication.titleJournal Of Electroanalytical Chemistry
degois.publication.volume924
dspace.entity.typePublication
rcaap.rightsopenAccess

Ficheiros

Principais
A mostrar 1 - 2 de 2
Miniatura
Nome:
Manuscript_JECE.pdf
Tamanho:
1.32 MB
Formato:
Adobe Portable Document Format
Ver/Abrir
Miniatura
Nome:
Supplementary_Material_JECE.pdf
Tamanho:
665.29 KB
Formato:
Adobe Portable Document Format
Ver/Abrir

Coleções

FCT: DQ - Artigos em revista internacional com arbitragem científica