Separation of zinc and nickel ions in a strong acid through liquid–liquid extraction

“…Table 2 lists the separation factors (S M,N ) for Cu(II) and other metals present concomitantly in the ATPS (L35 + MgSO 4 + H 2 O) and a PAN concentration of 0.285 mmol kg −1 at pH = 3 in different proportions. The separation factor expresses the efficiency for the separation of two species, M and N, in liquid-liquid extractions [24], and the value of S M,N can be calculated by Eq. (4):…”

Section: Influence Of the Atps Component Nature On The Extraction Behmentioning

confidence: 99%

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

Lemos

Santos

Rodrigues

et al. 2012

Journal of Hazardous Materials

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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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Separation of zinc and nickel ions in a strong acid through liquid–liquid extraction

Cited by 42 publications

References 11 publications

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

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