INFLUENCE OF TBP ON THE EXTRACTION OF URANIUM(VI) FROM NITRIC-ACID MEDIA BY N,N-DIBUTYLDECANAMIDE

The partition of uranium(VI) between nitric acid and N,N-dibutyldecana mide (DBDEA) in kerosene has been investigated at various concentratio ns of nitric acid, extractant and salting-out agent LiNO3. The mechani sm of extraction is discussed in the light of the results obtained. Th e effect of TBP on the extraction of uranium(VI) with DBDEA has also b een considered. There is an apparent synergistic effect with these two extractants at low concentration of TBP, however, one sees a decrease in extraction distribution at higher concentration. IR spectra show t hat there is no apparent interaction between the two kinds of extracta nts. The stoichiometry of the synergistic extracted species has been d etermined.