Hydrometallurgical recovery of Zn(II) and Mn(II) from alkaline batteries waste employing aqueous two-phase system.

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dc.contributor.authorLeite, Daniela da Silveira
dc.contributor.authorCarvalho, Pablo Luis Gutierrez
dc.contributor.authorLemos, Leandro Rodrigues de
dc.contributor.authorMageste, Aparecida Barbosa
dc.contributor.authorRodrigues, Guilherme Dias
dc.date.accessioned2019-05-03T14:26:44Z
dc.date.available2019-05-03T14:26:44Z
dc.date.issued2019
dc.description.abstractIn this study, a greener method for the recovery of zinc and manganese from alkaline batteries waste was developed using Aqueous Two-Phase System (ATPS). ATPS is a liquid-liquid extraction technique. Zn(II) and Mn(II) were extracted using the diluted liquor from samples of spent alkaline batteries, and the experimental conditions were evaluated considering the effects of the following parameters: (i) nature and concentration of the extractants (1-(2-pyridyl-azo)-2-naphthol (PAN), (bis-4-trimethylpentyl) phosphinic acid (Cyanex 272), diphenylthiocarbazone (dithizone, C13H12N4S) and bis-(2-ethylhexyl) phosphoric acid (D2EHPA)); (ii) pH (3.00, 6.00 and 11.0), (iii) ATPS-forming electrolytes (Na2SO4, C6H5Na3O7 or C4H4Na2O6); (iv) ATPS-forming polymers (L35 and L64); and (v) tie-line length (TLL) and mass ratio between top and bottom phases (mTP/mBP). The recovery efficiency was evaluated using the extraction percentage (%E) and separation factor () between Zn(II) and Mn(II). The best conditions for selective extraction of the metal ions were achieved using an ATPS composed by L64 + Na2SO4 + H2O at pH = 3.00, TLL = 41.83% w/w and mTP/mBP = 1 using dithizone as the extracting agent and leach liquor with dilution factor equal to 10. This resulted in a value for separation factor of  = 1.2 × 106, in one extraction stage.pt_BR
dc.identifier.citationLEITE, D. da S. et al. Hydrometallurgical recovery of Zn(II) and Mn(II) from alkaline batteries waste employing aqueous two-phase system. Separation and Purification Technology, v. 210, p. 327-334, fev. 2019. Disponível em: <https://www.sciencedirect.com/science/article/pii/S1383586618306178>. Acesso em: 7 mar. 2019.pt_BR
dc.identifier.doihttps://doi.org/10.1016/j.seppur.2018.07.038pt_BR
dc.identifier.issn1383-5866
dc.identifier.urihttp://www.repositorio.ufop.br/handle/123456789/11174
dc.identifier.uri2https://www.sciencedirect.com/science/article/pii/S1383586618306178pt_BR
dc.language.isoen_USpt_BR
dc.rightsrestritopt_BR
dc.titleHydrometallurgical recovery of Zn(II) and Mn(II) from alkaline batteries waste employing aqueous two-phase system.pt_BR
dc.typeArtigo publicado em periodicopt_BR
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