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Coupling hydrometallurgy and electrochemistry for lithium recovery and compound production [Comunicação oral]

2026-06Documento de conferência Acesso aberto
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datacite.subject.fosEngenharia e Tecnologia::Engenharia dos Materiais
datacite.subject.fosEngenharia e Tecnologia::Engenharia Química
datacite.subject.fosEngenharia e Tecnologia::Outras Engenharias e Tecnologias
datacite.subject.sdg11:Cidades e Comunidades Sustentáveis
datacite.subject.sdg12:Produção e Consumo Sustentáveis
datacite.subject.sdg13:Ação Climática
dc.contributor.authorAlmeida, Joana
dc.contributor.authorPedrosa, Fátima
dc.contributor.authorPlancha, Maria João
dc.contributor.authorGonçalves, Ana
dc.contributor.authorNogueira, Carlos
dc.date.accessioned2026-10-14T13:37:20Z
dc.date.available2026-10-14T13:37:20Z
dc.date.issued2026-06
dc.description.abstractABSTRACT: Global CO₂ emissions reached 38.11 Gt CO₂ in 2025 (Statista, 2026). The transport sector contributes significantly to these emissions. Therefore, the ongoing energy transition in the European Union (EU) has increased pressure on the resources required for electric vehicle production, particularly critical raw materials used in batteries, such as lithium (Li) (Dong et al., 2026). To reduce the dependence of EU on external suppliers, efforts are being made to decentralize Li production and develop synergies with active industrial processes. In Portugal, it is envisaged the potential implementation of an industrial-scale Li refining facility based on a membrane electrolysis process, feeding LiCl and producing high-purity battery-grade Li compounds. The aim of this work was to produce LiCl from α-spodumene, an important Li-bearing mineral, using more sustainable hydrometallurgical processes. The produced LiCl via extractive metallurgy could then be used in electrolysis processes to maintain chlorine production, that is needed for several commercial applications. By replacing conventional NaCl with LiCl, the process also provides a precursor for other important Li compounds to the energy transition, such as Li₂CO₃ and LiOH. Therefore, hydrometallurgical routes were studied to maximize LiCl recovery from α-spodumene (Li = 3.2%) while minimizing reagent consumption and energy use. A maximum of 91% of Li was recovered, when conventional calcination and H2SO4 digestion was replaced by CaCl2 roasting. This work highlights the potential of integrating hydrometallurgical processes with electrochemical routes to produce diverse Li compounds with lower environmental impacts.eng
dc.identifier.citationAlmeida, J., Pedrosa, F., Plancha, M.J., Gonçalves, A., & Nogueira, C. (2026). Coupling hydrometallurgy and electrochemistry for lithium recovery and compound production. In: 20th International Symposium on Electrokinetic Remediation (EREM2026), Lisboa, Portugal, 17-19 June, 2026
dc.identifier.urihttp://hdl.handle.net/10400.9/6511
dc.language.isoeng
dc.peerreviewedno
dc.relationOpTIMAL NGS - New Generation Storage Towards a Sustainable Energy System
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectLithium recovery
dc.subjectCritical raw materials
dc.subjectHydrometallurgy
dc.subjectElectrochemistry
dc.subjectBatteries
dc.subjectEnergy transition
dc.titleCoupling hydrometallurgy and electrochemistry for lithium recovery and compound production [Comunicação oral]eng
dc.typeconference object
dspace.entity.typePublication
oaire.awardNumber2022.42626.CPCA.A0
oaire.awardTitleOpTIMAL NGS - New Generation Storage Towards a Sustainable Energy System
oaire.awardURIhttp://hdl.handle.net/10400.9/6504
oaire.citation.conferenceDate2026-06-17
oaire.citation.conferencePlaceLisboa, Portugal
oaire.citation.title20th International Symposium on Electrokinetic Remediation (EREM2026)
oaire.fundingStreamFCT_CPCA_2022_01
oaire.versionhttp://purl.org/coar/version/c_be7fb7dd8ff6fe43
person.familyNameAlmeida
person.familyNamePedrosa
person.familyNamePlancha
person.familyNameGonçalves
person.familyNameNogueira
person.givenNameJoana
person.givenNameFátima
person.givenNameMaria João
person.givenNameAna
person.givenNameCarlos
person.identifier.ciencia-id011E-FCCD-4FA6
person.identifier.orcid0000-0002-1247-9341
person.identifier.orcid0000-0002-0479-822X
person.identifier.orcid0009-0005-3142-9779
person.identifier.orcid0009-0009-4763-8750
person.identifier.orcid0000-0003-2949-5046
person.identifier.ridA-4926-2013
person.identifier.scopus-author-id7006686159
relation.isAuthorOfPublication6e94d6b2-96de-4603-ae67-4daf5169cc37
relation.isAuthorOfPublication2ce2b103-1205-4c2a-8799-fd7d9f5f7800
relation.isAuthorOfPublication34921da4-1a58-44c8-b908-96089f2b2261
relation.isAuthorOfPublication64695046-3e69-44c1-b42d-012fb8221570
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