A Study on two-phase separation in ,-dialkylamides-nitric acid systems by turbidity measurement, 2; The Correlation between turbidity and the distribution ratio of uranium

Tsutsui, Nao  ; Ban, Yasutoshi  ; Hakamatsuka, Yasuyuki; Urabe, Shunichi; Matsumura, Tatsuro  

The turbidity of the agitated solutions of ,-di(2-ethylhexyl)-butanamide (DEHBA) in dodecane and uranyl nitrate in 3 M HNO was measured for 30 min. The variation of the distribution ratio of uranium after stopping the agitation was also measured, and the correlation between the turbidity and the distribution ratio was studied. The turbidity and the distribution ratio of uranium at 3 min after stopping the agitation was more than 1000 FTU and 1.7, respectively, when the initial uranium concentration was 700 mM. The turbidity at 6 min decreased to 363 FTU, while the distribution rate increased to 2.2. Although the turbidity after 6 min decreased gradually, the distribution ratio barely changed. The correlation between the turbidity and the distribution ratio is discussed.