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Extraction of rare earth elements via electric field assisted mining applying deep eutectic solvents

2022-05Artigo científico Acesso aberto
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dc.contributor.authorPires, Carolina M. G.
dc.contributor.authorRibeiro, Alexandra B.
dc.contributor.authorMateus, Eduardo P.
dc.contributor.authorPonte, Haroldo A.
dc.contributor.authorPonte, Maria José J. S.
dc.contributor.institutionDCEA - Departamento de Ciências e Engenharia do Ambiente
dc.contributor.institutionCENSE - Centro de Investigação em Ambiente e Sustentabilidade
dc.contributor.pblElsevier BV
dc.date.accessioned2022-04-13T22:44:02Z
dc.date.available2024-02-23T01:32:38Z
dc.date.embargoedUntil2024-02-22
dc.date.issued2022-05
dc.descriptionThis study was partly financed by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - Brasil ( CAPES ) - Finance Code 001 Publisher Copyright: © 2022 Elsevier B.V.
dc.description.abstractRare earth elements play an important role in our society, as they are used in green energy technologies. However, they are considered critical raw materials. For this reason, there is a concern for obtaining alternative and complementary sources for conventional mining. In light of this view, electric field assisted mining arises as a technique to extract species from soils using green electrolytes to help in the extraction of metals. The aim of this paper was to evaluate the effect of different types of biodegradable electrolytes, including the use of deep eutectic solvents, in the electromining process. Six experiments were conducted applying an electric field of 1.0 V cm−1, and all electrolytes were used at a concentration of 0.1 mol L−1. The results showed that different electrolytes achieved different selectivities. The maximum efficiency using acetic acid resulted in 69.1% of Ce4+, citric acid removed 62.3% of La3+, and oxalic acid extracted 21.5% of La3+. The electromining efficiencies using deep eutectic solvents presented minor results. Therefore, considering the biodegradability and selectivity of the organic acids used, electromining showed to be a promising eco-friendly alternative for preferential extraction of metal species from soils.en
dc.description.versionproof
dc.description.versionpublished
dc.format.extent658298
dc.identifier.doi10.1016/j.scp.2022.100638
dc.identifier.issn2352-5541
dc.identifier.otherPURE: 43209611
dc.identifier.otherPURE UUID: 62bc0283-acf6-474e-abc8-c25bde69406d
dc.identifier.otherScopus: 85124937461
dc.identifier.otherORCID: /0000-0002-5606-3591/work/111435398
dc.identifier.otherWOS: 000789675700003
dc.identifier.urihttp://hdl.handle.net/10362/136405
dc.identifier.urlhttps://www.scopus.com/pages/publications/85124937461
dc.language.isoeng
dc.peerreviewedyes
dc.relationFunding Information: info:eu-repo/grantAgreement/EC/H2020/778045/EU
dc.relationinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04085%2F2020/PT
dc.relationCenter for Environmental and Sustainability Research
dc.subjectCerium
dc.subjectElectromining
dc.subjectLanthanum
dc.subjectLight rare earth elements
dc.subjectNeodymium
dc.subjectSelective removal
dc.subjectEnvironmental Chemistry
dc.subjectPollution
dc.subjectPharmaceutical Science
dc.subjectManagement, Monitoring, Policy and Law
dc.titleExtraction of rare earth elements via electric field assisted mining applying deep eutectic solventsen
dc.typejournal article
degois.publication.titleSustainable Chemistry and Pharmacy
degois.publication.volume26
dspace.entity.typePublication
oaire.awardNumberUIDB/04085/2020
oaire.awardTitleCenter for Environmental and Sustainability Research
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04085%2F2020/PT
oaire.fundingStream6817 - DCRRNI ID
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccess
relation.isProjectOfPublication1cc967d8-7733-4838-87f1-bf163f81e96d
relation.isProjectOfPublication.latestForDiscovery1cc967d8-7733-4838-87f1-bf163f81e96d

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