Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/18979
Tipo: Artigo
Título: Copper recovery from ore by liquid–liquid extraction using aqueous two-phase system
Autor(es): Lemos, Leandro Rodrigues de
Santos, Igor José Boggione
Rodrigues, Guilherme Dias
Silva, Luis Henrique Mendes da
Silva, Maria C. Hespanhol da
Abstract: We investigated the extraction behavior of Cu(II) in the aqueous two-phase system (ATPS) formed by (L35 + MgSO4 + H2O) or (L35 + (NH4)2SO4 + H2O) 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.
Palavras-chave: Green chemistry
Copper
Ore
Liquid–liquid extraction
Aqueous two-phase system
Editor: Journal of Hazardous Materials
Tipo de Acesso: Open Access
URI: https://doi.org/10.1016/j.jhazmat.2012.08.028
http://www.locus.ufv.br/handle/123456789/18979
Data do documento: 14-Ago-2012
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