Synergistic extraction of nickel(II) from a sulfate medium by a mixture of N-(2-hydroxybenzylidene)aniline and methyl–isobutyl ketone

ABSTRACT

The synergistic solvent extraction of nickel(II) from a sulfate medium with N-(2-hydroxybenzylidene)aniline in the absence and presence of Methyl–Isobutyl Ketone (MIBK) in chloroform at 25°C has been studied. A synergistic effect is observed for the metal at low and high (MIBK) concentration ratios, respectively. The synergistic extraction of nickel(II) with the mixtures has been investigated with the analysis methods of slope. The extractable species has been identified as NiL₂ and NiL₂(MIBK)₂. The extraction constants are reported.

KEYWORDS:

• Solvent extraction
• nickel(II)
• N-(2-hydroxybenzylidene)aniline
• methyl–isobutyl ketone
• synergism