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Effect of acetate medium on the extraction of cobalt(II) with Di(2‐ethylhexyl)phosphoric acid dissolved in kerosene
Author(s) -
Juang RueyShin,
Lo RuHuey
Publication year - 1993
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/jctb.280570310
Subject(s) - phosphoric acid , chemistry , extraction (chemistry) , kerosene , cobalt , butyl acetate , sulfate , nuclear chemistry , ion , inorganic chemistry , chromatography , organic chemistry , solvent
In this paper, the effect of acetate ion (OAc − ) on the extraction of cobalt(II) from sulfate media with kerosene solutions of di(2‐ethylhexyl)phosphoric acid (D2EHPA, HR) was investigated at 25°C. In the absence of acetate ions, the composition of the extracted species was graphically determined to be CoR 2 (HR) 2 at low loading of D2EHPA (α < 0.06). In the presence of acetate medium, the acetate ions were co‐extracted and the mixed complexes of the type Co 2 OAc q R 4‐ p (HR) , were formed at a relatively higher loading of D2EHPA (0.10 < α < 0.34), where q = 0–4 and r = 2–4 depending on the concentration of acetate ions.