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Recovery of U and Pu from nitric acid using ${it N,N}$-di(2-ethylhexyl)butanamide (DEHBA) in mixer-settler extractors

Ban, Yasutoshi  ; Hotoku, Shinobu ; Tsubata, Yasuhiro   ; Morita, Yasuji  

The recovery of U and Pu from nitric acid using the monoamide extractant ${it N,N}$-di(2-ethylhexyl)butanamide (DEHBA) in mixer-settler extractors was calculated using a simulation code, and a continuous counter-current experiment using mixer-settler extractors was performed. The flow rate, stage number, and nitric acid concentration were chosen as the parameters for the calculation, and the appropriate experimental conditions for separating U from Pu were determined. The results of the continuous counter-current experiment showed that the percentages of U and Pu extracted using 1.5 mol/dm$$^{3}$$ (M) DEHBA from 4 M nitric acid were $$>$$99.9% and 97.84%, respectively.



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Category:Chemistry, Multidisciplinary



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