Hydrometallurgical separation of copper and cobalt from lithium-ion batteries using aqueous two-phase systems.

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorLeite, Daniela da Silveira-
Autor(es): dc.creatorCarvalho, Pablo Luis Gutierrez-
Autor(es): dc.creatorLemos, Leandro Rodrigues de-
Autor(es): dc.creatorMageste, Aparecida Barbosa-
Autor(es): dc.creatorRodrigues, Guilherme Dias-
Data de aceite: dc.date.accessioned2025-08-21T15:26:18Z-
Data de disponibilização: dc.date.available2025-08-21T15:26:18Z-
Data de envio: dc.date.issued2018-03-23-
Data de envio: dc.date.issued2018-03-23-
Data de envio: dc.date.issued2017-
Fonte completa do material: dc.identifierhttp://www.repositorio.ufop.br/handle/123456789/9731-
Fonte completa do material: dc.identifierhttp://www.sciencedirect.com/science/article/pii/S0304386X16303644-
Fonte completa do material: dc.identifierhttps://doi.org/10.1016/j.hydromet.2017.01.002-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1014711-
Descrição: dc.descriptionA new green hydrometallurgical method was developed for the selective extraction of copper and cobalt from spent lithium-ion batteries, using an aqueous two-phase system (ATPS) extraction technique. The method was optimized for the extraction of Cu(II) and Co(II), considering the influence of the following parameters: type and concentration of extractant (1-(2-pyridyl-azo)-2-naphthol (PAN), 1-nitroso-2-naphthol (1N2N), or bis(2,4,4-trimethylpentyl) phosphinic acid (Cyanex 272)); pH (1.00, 6.00, or 11.0); ATPS-forming electrolyte (Na2SO4 or Na3C6H5O7); tie-line length (TLL) of the system; and mass ratio of the top and bottom phases (mTP/mBP). The recovery efficiency was evaluated in terms of the extraction percentage (%E) and the separation factor (S) between copper and cobalt. The best conditions for selective extraction were achieved using an ATPS composed of L64+Na2SO4+H2O,with pH=6.00, TLL=50.3% (w/w),mTP/mBP=1, and PAN as the extracting agent, which resulted in βCu,Co=3.22×102. The method was subsequently applied to a real lithium-ion battery sample, previously leached with HCl and HNO3. Improved separation of copper and cobalt was achieved using successive extraction steps, resulting in βCu,Co=5.40×105. A stripping assaywas also performed, and after a single step, 70.5% of the copper was available for an electrowinning process-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Direitos: dc.rightsrestrito-
Palavras-chave: dc.subjectLiquid-liquid extraction-
Título: dc.titleHydrometallurgical separation of copper and cobalt from lithium-ion batteries using aqueous two-phase systems.-
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