EXTRACTION OF MOLYBDENUM(VI) BY MTOAC AND ITS BINARY-MIXTURES WITH VARIOUS DONORS FROM AQUEOUS HCL MEDIA

The extraction of molybdenum(VI) from aqueous HCl media with 5% (v/v) MTOAC, 5% (v/v) Alamine 310, 5% (v/v> TBP and 0.1 M DPSO is found to b e quantitative in the higher range of acidity (> 4 M) Synergism is obs erved with binary mixtures of 5% (v/v) MTOAC with 5% (v/v) TBP or 0.1 M DPSO, which increases with increase in acid concentration. Extractio n of molybdenum(VI) with a mixture of 5% (v/v) MTOAC and 5% (v/v) Alam ine 310 exhibits antagonism in the acid range 1-8 M Extraction of this metal ion has also been studied with mixture of 5% MTOAC and 5% (v/v) Cyanex 301 from 0.1-1 M HCl. The presence of chloride and thiocyanate ions enhance the extraction to an appreciable extent in acid medium.