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

JOURNAL OF HAZARDOUS MATERIALS

卷:237

Article

de Lemos, Leandro Rodrigues¹  Boggione Santos, Igor Jose¹  Rodrigues, Guilherme Dias¹  Mendes da Silva, Luis Henrique¹  Hespanhol da Silva, Maria C.¹ 

[1] Univ Fed Vicosa, Ctr Ciencias Exatas & Tecnol, Dept Quim, Grp Quim Verde Coloidal & Macromol, BR-36560000 Vicosa, MG, Brazil

关键词: Green chemistry;    Copper;    Ore;    Liquid-liquid extraction;    Aqueous two-phase system;   

DOI  :  10.1016/j.jhazmat.2012.08.028

来源: Elsevier

【 摘 要 】

We investigated the extraction behavior of Cu(II) in the aqueous two-phase system (ATPS) formed by (L35 + MgSO4 + H2O) or (L35 +(NH4)(2)SO4 + 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. (C) 2012 Elsevier B.V. All rights reserved.

【 授权许可】

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