Abstract

A. V. L. N. S. H. Hariharan

The extraction of chromium (VI) from hydrochloric, sulphuric, and nitric acid solutions with Tri phenylphosphine oxide (TPPO) in benzene has been studied. The extractions from hydrochloric, sulphuric and acid solutions are nearly quantitative and are partial from nitric acid solutions. The optimum conditions for extraction were established from the study of the effect of several variables like- concentration of amine-oxide, metal ion, acidity, foreign ions etc. The extracted species are identified.

Solvent extraction of Cr(VI); Mineral acid; Triphenyl phosphine oxide

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