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Artigo Acesso aberto Produção Nacional Revisado por pares
BIBTEX RIS

Copper recovery from ore by liquid–liquid extraction using aqueous two-phase system

2012; Elsevier BV; Volume: 237-238; Linguagem: Inglês

10.1016/j.jhazmat.2012.08.028

ISSN

1873-3336

Autores

Leandro Rodrigues de Lemos, Igor José Boggione Santos, Guilherme Dias Rodrigues, Luís Henrique Mendes da Silva, Maria do Carmo Hespanhol da Silva,

Tópico(s)

Crystallization and Solubility Studies

Resumo

We investigated the extraction behavior of Cu(II) in the aqueous two-phase system (ATPS) formed by (L35+MgSO(4)+H(2)O) or (L35+(NH(4))(2)SO(4)+H(2)O) in the presence of the extracting agent 1-(2-pyridylazo)-2-naphthol (PAN). At pH=3 and a PAN concentration of 0.285 mmol kg(-1), both ATPS lead to the effective separation of Cu(II) from other metallic ions (Zn(II), Co(II), Ni(II) and Fe(III)). High separation factors range between 1000 and 10,000 were obtained for the extraction of Cu(II) and concomitant metallic ions. This ATPS was used for the extraction of Cu(II) from a leached ore concentrate with a extraction percentage of 90.4 ± 1.1%; other metals were mainly located in the bottom phase.

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