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- Title
Effect of radiolysis and radiolytic products of tri-iso-amyl phosphate on the extraction behavior of uranium.
- Authors
Sun, Jiayang; Ao, Yinyong; Wang, Yue; Zhang, Hang; Zhai, Maolin; Li, Jiuqiang; Peng, Jing; Li, Huibo
- Abstract
Tri-iso-amyl phosphate (TiAP) is a promising alternative extract agent to tri-n-butyl phosphate for spent fuel reprocessing. In this work, the effect of concentration and dominant radiolysis products of TiAP in γ-irradiated TiAP/n-dodecane (nDD) solution on the extraction of UO2(NO3)2 was investigated. The extraction efficiency of U(VI) increased significantly with absorbed dose in the absence of nitric acid due to the formation of di-iso-amyl phosphoric acid (HDiAP). Density functional theory calculation further proved that coordination energy between HDiAP and U(VI) is higher than that of TiAP. Extraction performance confirmed the synergistic effect of TiAP and HDiAP on U(VI).
- Subjects
RADIOLYSIS; DENSITY functional theory; URANIUM; ABSORBED dose; SPENT reactor fuels; URANIUM compounds
- Publication
Journal of Radioanalytical & Nuclear Chemistry, 2023, Vol 332, Issue 10, p4089
- ISSN
0236-5731
- Publication type
Article
- DOI
10.1007/s10967-023-09113-x