Integrated leaching and separation of metals using mixtures of organic acids and ionic liquids

Detalhes bibliográficos
Autor(a) principal: Vargas, Silvia J. R.
Data de Publicação: 2020
Outros Autores: Passos, Helena, Schaeffer, Nicolas, Coutinho, João A. P.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10773/33198
Resumo: In this work, the aqueous phase diagram for the mixture of the hydrophilic tributyltetradecyl phosphonium ([P44414]Cl) ionic liquid with acetic acid (CH3COOH) is determined, and the temperature dependency of the biphasic region established. Molecular dynamic simulations of the [P44414]Cl + CH3COOH + H2O system indicate that the occurrence of a closed "type 0" biphasic regime is due to a "washing-out" phenomenon upon addition of water, resulting in solvophobic segregation of the [P44414]Cl. The solubility of various metal oxides in the anhydrous [P44414]Cl + CH3COOH system was determined, with the system presenting a good selectivity for CoO. Integration of the separation step was demonstrated through the addition of water, yielding a biphasic regime. Finally, the [P44414]Cl + CH3COOH system was applied to the treatment of real waste, NiMH battery black mass, being shown that it allows an efficient separation of Co(II) from Ni(II), Fe(III) and the lanthanides in a single leaching and separation step.
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spelling Integrated leaching and separation of metals using mixtures of organic acids and ionic liquidsCritical metalsProcess intensificationMetal leachingSolvent extractionSolvometallurgyIn this work, the aqueous phase diagram for the mixture of the hydrophilic tributyltetradecyl phosphonium ([P44414]Cl) ionic liquid with acetic acid (CH3COOH) is determined, and the temperature dependency of the biphasic region established. Molecular dynamic simulations of the [P44414]Cl + CH3COOH + H2O system indicate that the occurrence of a closed "type 0" biphasic regime is due to a "washing-out" phenomenon upon addition of water, resulting in solvophobic segregation of the [P44414]Cl. The solubility of various metal oxides in the anhydrous [P44414]Cl + CH3COOH system was determined, with the system presenting a good selectivity for CoO. Integration of the separation step was demonstrated through the addition of water, yielding a biphasic regime. Finally, the [P44414]Cl + CH3COOH system was applied to the treatment of real waste, NiMH battery black mass, being shown that it allows an efficient separation of Co(II) from Ni(II), Fe(III) and the lanthanides in a single leaching and separation step.MDPI2022-02-15T19:51:08Z2020-12-01T00:00:00Z2020-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10773/33198eng10.3390/molecules25235570Vargas, Silvia J. R.Passos, HelenaSchaeffer, NicolasCoutinho, João A. P.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-02-22T12:03:43Zoai:ria.ua.pt:10773/33198Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:04:36.969169Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Integrated leaching and separation of metals using mixtures of organic acids and ionic liquids
title Integrated leaching and separation of metals using mixtures of organic acids and ionic liquids
spellingShingle Integrated leaching and separation of metals using mixtures of organic acids and ionic liquids
Vargas, Silvia J. R.
Critical metals
Process intensification
Metal leaching
Solvent extraction
Solvometallurgy
title_short Integrated leaching and separation of metals using mixtures of organic acids and ionic liquids
title_full Integrated leaching and separation of metals using mixtures of organic acids and ionic liquids
title_fullStr Integrated leaching and separation of metals using mixtures of organic acids and ionic liquids
title_full_unstemmed Integrated leaching and separation of metals using mixtures of organic acids and ionic liquids
title_sort Integrated leaching and separation of metals using mixtures of organic acids and ionic liquids
author Vargas, Silvia J. R.
author_facet Vargas, Silvia J. R.
Passos, Helena
Schaeffer, Nicolas
Coutinho, João A. P.
author_role author
author2 Passos, Helena
Schaeffer, Nicolas
Coutinho, João A. P.
author2_role author
author
author
dc.contributor.author.fl_str_mv Vargas, Silvia J. R.
Passos, Helena
Schaeffer, Nicolas
Coutinho, João A. P.
dc.subject.por.fl_str_mv Critical metals
Process intensification
Metal leaching
Solvent extraction
Solvometallurgy
topic Critical metals
Process intensification
Metal leaching
Solvent extraction
Solvometallurgy
description In this work, the aqueous phase diagram for the mixture of the hydrophilic tributyltetradecyl phosphonium ([P44414]Cl) ionic liquid with acetic acid (CH3COOH) is determined, and the temperature dependency of the biphasic region established. Molecular dynamic simulations of the [P44414]Cl + CH3COOH + H2O system indicate that the occurrence of a closed "type 0" biphasic regime is due to a "washing-out" phenomenon upon addition of water, resulting in solvophobic segregation of the [P44414]Cl. The solubility of various metal oxides in the anhydrous [P44414]Cl + CH3COOH system was determined, with the system presenting a good selectivity for CoO. Integration of the separation step was demonstrated through the addition of water, yielding a biphasic regime. Finally, the [P44414]Cl + CH3COOH system was applied to the treatment of real waste, NiMH battery black mass, being shown that it allows an efficient separation of Co(II) from Ni(II), Fe(III) and the lanthanides in a single leaching and separation step.
publishDate 2020
dc.date.none.fl_str_mv 2020-12-01T00:00:00Z
2020-12-01
2022-02-15T19:51:08Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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dc.identifier.uri.fl_str_mv http://hdl.handle.net/10773/33198
url http://hdl.handle.net/10773/33198
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.3390/molecules25235570
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