US EPA

7855498 

Journal Article 

Extraction of nickel(II) with methyl isobutyl ketone and tri-n-butylphosphate 

Ipinmoroti, KO; Komolafe, RT 

1996 

1 

Indian Journal of Chemistry. Section A
ISSN: 0376-4710
EISSN: 0975-0975 

COUNCIL SCIENTIFIC INDUSTRIAL RESEARCH 

NEW DELHI 

35 

5 

441-442 

English 

WOS:A1996UF76900018 

The equilibrium extraction of nickel(II) has been carried out with methyl isobutylkeione (MIBK) and tri-n-butylphosphate (TBP) and compared under various experimental conditions. The extraction has been carried out in acid sulphate media in the pH range 2.0-7.0 using extractant concentrations in the range 0.05 to 1.0 M and in the temperature range 28.2 to 50°C. The initial aqueous nickel(II) concentrations varied from 0.01 to 0.10 M. Extraction of nickel(II) by MIBK is most favourable at pH 2.50 at room temperature and 0.01 M aqueous nickel concentration. For TBP, extraction is best at pH 6.0, temperature 5O°C and 0.01 M nickel concentration. For both systems, nickel(II) extraction increased monotonically as the extractant concentration increased in the diluent. The experimental data suggest that both extractants are adaptable for the recovery of aqueous nickel.