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YU Ting, LI Zheng, ZHAO Hao-gui, HE Shu-hua, HE Hui, LI Qing-nuan, ZHANG Lan. Distribution Coefficient Model of Main Component in Th(NO3)4-UO2(NO3)2-HNO3-H2O/30%TBP-dodecane Extraction System[J]. Atomic Energy Science and Technology, 2015, 49(11): 1939-1945. DOI: 10.7538/yzk.2015.49.11.1939
Citation: YU Ting, LI Zheng, ZHAO Hao-gui, HE Shu-hua, HE Hui, LI Qing-nuan, ZHANG Lan. Distribution Coefficient Model of Main Component in Th(NO3)4-UO2(NO3)2-HNO3-H2O/30%TBP-dodecane Extraction System[J]. Atomic Energy Science and Technology, 2015, 49(11): 1939-1945. DOI: 10.7538/yzk.2015.49.11.1939
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Distribution Coefficient Model of Main Component in Th(NO3)4-UO2(NO3)2-HNO3-H2O/30%TBP-dodecane Extraction System

  • 1.

    Department of Radiochemistry and Engineering, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China

  • 2.

    Key Laboratory of Nuclear Radiation and Nuclear Energy Technology, Chinese Academy of Sciences, Shanghai 201800, China

  • 3.

    Department of Radiochemistry, China Institute of Atomic Energy, Beijing 102413, China

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    • Abstract
  • Based on distribution coefficient data of thorium (Th), uranium (U) and nitric acid in the tributyl phosphate (TBP) extraction system, and by comparing and analyzing the presented distribution coefficient models in the literature, a new mathematical distribution coefficient model with relative computer program for simulating the extraction behavior of Th(Ⅳ), U(Ⅵ) and HNO3 in the TBP extraction system. The reliability of the new model with computer program was verified by 34 sets of distribution coefficient data. The calculated results agree well with the experimental data. The results by comparing the actual distribution coefficient data with the computing results indicate that the calculated results by using this new model are more reliable and accurate than those of SEPHIS model reported previously. The model presented in this work can be a foundation for simulating the extraction behavior of thorium, uranium and nitric acid in the extraction system of Th(NO3)4-UO2(NO3)2-HNO3-H2O/30%TBP-dodecane with uranium concentrations from 0 g/L to 100 g/L, thorium from 0 g/L to 232 g/L, and HNO3 from 0 g/L to 4.5 mol/L at 25 ℃.
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    • References (15)
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