Journal of Siberian Federal University. Chemistry / Nickel, Cobalt and Zinc Extraction from Sulphate Media with Bis (2,4,4-trimethylpentyl)dithiophosphinic Acid

Full text (.pdf)
Issue
Journal of Siberian Federal University. Chemistry. 2009 2 (3)
Authors
Pashkov, Gennady L.; Grigorieva, Natalia A.; Fleitlikh, Igor Yu.; Pavlenko, Nina I.; Nikiforova, Lidia K.
Contact information
Pashkov, Gennady L. : Institute of Chemistry and Chemical Technology SB RAS; 42 K. Marx, Krasnoyarsk, 660049 Russia,; Grigorieva, Natalia A. : Institute of Chemistry and Chemical Technology SB RAS; 42 K. Marx, Krasnoyarsk, 660049 Russia, e-mail: ; Fleitlikh, Igor Yu. : Institute of Chemistry and Chemical Technology SB RAS; 42 K. Marx, Krasnoyarsk, 660049 Russia,; Pavlenko, Nina I. : Institute of Chemistry and Chemical Technology SB RAS; 42 K. Marx, Krasnoyarsk, 660049 Russia,; Nikiforova, Lidia K. : Institute of Chemistry and Chemical Technology SB RAS; 42 K. Marx, Krasnoyarsk, 660049 Russia,
Keywords
Liquid-liquid extraction; nickel; cobalt and zinc ions; bis(2,4,4-trimethylpentyl)dithiophosphinic acid
Abstract

The paper presents data on nickel, cobalt and zinc extraction from sulphate solutions with nonane-diluted bis(2,4,4-trimethylpentyl)dithiophosphinic acid (HR). An IR spectroscopy method is used to examine the state of HR in nonane, and it was shown to exist as a monomer up to a concentration of 0.1 M. With a further increase in concentration, the acid forms associated species. The value of the concentration of the monomeric form is determined as a function of the total HR concentration in nonane in the range of 0.0-1.0 M. Based on the comparative analysis of the extraction equilibrium data together with information from the visible and IR absorption spectra of the extract, the configuration of the nickel, cobalt and zinc complexes in the organic phase was determined.

Pages
232-240
Paper at repository of SibFU
https://elib.sfu-kras.ru/handle/2311/1586