EXTRACTION OF MO(VI) AND U(VI) BY ALAMINE-310 AND ITS MIXTURES FROM HCI SOLUTION

Studies on the extraction of molybdenum(VI) and uranium(VI) from HCI s olution by triisodecyl amine (Alamine 310), tri-n-butyl phosphate (TBP ), di-n-pentylsulphoxide (DPSO) and their mixtures in benzene, in the range of 1-10 M aq. HCI, show that extractions are quantitative in mos t cases in the higher acidity range 6-8 M. Extraction by bis(2,4,4-tri methyl pentyl) dithiophosphinic acid (Cyanex 301) and its mixtures stu died in the range of 0.2-1 M aq. HCI shows quantitative extraction for both the metals by Cyanex 301 and Alamine 31 0 mixtures only at lower acidity (approximately 0.2 M). The SCN- ion has a profound influence on the extraction of uranium(VI) by mixtures of 5% (v/v) Alamine 310 a nd 5% (v/v) TBP from 1 M HCI and the extraction is approximately 95% a t approximately 0.2 M SCN- concentration. Synergism is marked in the e xtraction of molybdenum(VI) for the mixtures of Alamine 310 and TBP, A lamine 310 and Cyanex 301, and for uranium(VI), by mixtures of Alamine 310 and DPSO as well as Alamine 310 and Cyanex 301.