DISTRIBUTION OF N- AND ISO- BUTYRALDEHYDES BETWEEN TRI-N-BUTYL PHOSPHATE/ N-DODECANE AND NITRIC ACID |
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| Authors: | Gumo UCHIYAMA Shinobu HOTOKU Sachio FUJINE Mitsuru MAEDA |
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| Affiliation: | Process Engineering Laboratory, Department of Fuel Cycle Safety Research , Japan Atomic Energy Research Institute , Tokai-mura, Naka-gun, Ibaraki-ken, 319-11, Japan |
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| Abstract: | ABSTRACT The distribution of n- and iso-butyraldehydes between tri-n-butyl phosphate(TBP) n-dodecane(nDD) and HNO3 were measured. The distribution ratio of n-butyraldehyde in the TBP/nDD and HNO3 system was nearly the same as that of iso-butyraldehyde. The distribution ratios of n- and iso-butyraldehydes increased with TBP concentration in the organic phase. The equilibrium constant of the extraction reaction was about 2. In a uranium, neptunium and plutonium separation process, most of the n- and iso-butyra1dehydes fed into theNp separation stepor into thePu/U partition will be left with the TBP solvent. The two compounds will be partly back-extracted to the aqueous phase in the U purification and in the solvent washing steps of the PUREX process. |
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