title: Equilibrium studies of cobalt(II) extraction with 2-pyridineketoxime from mixed sulphate/chloride solution.
abstract: In present paper the equilibrium of cobalt extraction with 1-(2-pyridyl)tridecan-1-one oxime from the chloride/sulphate solutions was studied. The presented results indicated that extraction depends on a number of process variables, including the pH, metal and Cl-concentration in the aqueous feed, and concentration of the oxime in the organic phase. The created cobalt-complexes with the 2-pyridine ketoxime were stable and only concentrated HCl was found to be a suitable stripping agent for coordinated metal. The separation of Co(II) from Zn(II), Ni(II) and Cu(II) was also studied, but the selective recovery of the metals was possible using the multi-stage stripping process.
authors.affiliation: Institute of Chemical Technology and Engineering, Poznan University of Technology, ul. Berdychowo 4, 60-965 Poznan, Poland.
authors.forename: Karolina
authors.initials: K
authors.lastname: Wieszczycka
authors.affiliation: Institute of Chemical Technology and Engineering, Poznan University of Technology, ul. Berdychowo 4, 60-965 Poznan, Poland.
authors.forename: Marta
authors.initials: M
authors.lastname: Krupa
authors.affiliation: Institute of Chemical Technology and Engineering, Poznan University of Technology, ul. Berdychowo 4, 60-965 Poznan, Poland.
authors.forename: Aleksandra
authors.initials: A
authors.lastname: Wojciechowska
authors.affiliation: Institute of Chemical Technology and Engineering, Poznan University of Technology, ul. Berdychowo 4, 60-965 Poznan, Poland.
authors.forename: Irmina
authors.initials: I
authors.lastname: Wojciechowska
authors.affiliation: Institute of Chemical Technology and Engineering, Poznan University of Technology, ul. Berdychowo 4, 60-965 Poznan, Poland.
authors.forename: Andrzej
authors.initials: A
authors.lastname: Olszanowski
keywords: Chloride/sulphate leaching; Chloride/sulphate solution; Cobalt(II) extraction; Cobalt(II) speciation; Pyridylketoxime
references.citation: Dalton Trans. 2005 Apr 21;(8):1428-37
references.pmid: 15824781