RADIOLYSIS OF DIISODECYL PHOSPHORIC ACID AND ITS EFFECT ON THE EXTRACTION OF NEPTUNIUM |
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| Authors: | Yasuji Morita Masumitsu Kubota Young-Joon Shin |
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| Affiliation: | 1. Department of Environmental Safety Research , Japan Atonic Energy Research Institute Tokai-mura , Ibaraki-ken , 319-11 , Japan;2. Departnent of Spent Fuel Management , Korea Advanced Energy Research Institute , Daejun , Choong-Nan , 300-31 , Korea |
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| Abstract: | Radiolysis of diisodecyl phosphoric acid (DIDPA) in n-dodecane containing tributyl phosphate (TBP) was examined by analyzing concentrations of acidic extractants and H3PO4, and its effect on the extraction of neptuniua was studied froi the aspect of the extraction rate. For the solvent containing 0.5 fi DIDPA and 0.1 1 TBP Irradiated in the absence of HNO3, G-values for degradation of DIDPA and for production of dibutyl phosphoric acid (DBP)were found to be 0.47 and 0.14, respectively. For the solvent irradiated in stationary contact with 0.5 M HNO3, G-value for DIDPA degradation was found to be 0.78, which ras 1.7 tines larger than the value for the solvent irradiated in the absence of HNO3. |
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