A. Elias et al., TETRABUTYLALKYLENEDIPHOSPHONATES AND TETRABUTYLALKYLENEDIPHOSPHONATE-DI(2-ETHYLHEXYL) PHOSPHORIC-ACID MIXTURES IN SOLVENT-EXTRACTION OF URANYL-NITRATE, Hydrometallurgy, 40(1-2), 1996, pp. 189-194
The liquid-liquid extraction of uranyl nitrate by tetrabutylalkylenedi
phosphonates (TBADP) and TBADP-di(2-ethylhexyl)phosphoric acid (D2EHPA
) mixtures from aqueous solutions of nitric acid was investigated. The
tetrabutylalkylenediphosphonates tested for extraction were: tetrabut
ylmethylenediphosphonate (TBMDP) and tetrabutylethylene-diphosphonate
(TBEDP). The results of the extraction tests have revealed a synergist
ic effect when mixtures of TBADP-D2EHPA are used.