原子能科学技术Issue(11)：1939-1945,7.DOI:10.7538/yzk.2015.49.11.1939
Th（NO3）4-UO2（NO3）2-HNO3-H2 O/30%TBP-正十二烷萃取体系主要组分分配比模型
Distribution Coefficient Model of Main Component in Th(NO3)4-UO2 (NO3)2-HNO3-H2 O/30%TBP-dodecane Extraction System
摘要
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 mathe-matical 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 distribu-tion 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 accu-rate 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-H2 O/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 ℃.关键词
钍/铀/硝酸/分配比/数学模型Key words
thorium/uranium/HNO3/distribution coefficient/simulation model分类
能源科技引用本文复制引用
于婷,李峥,赵皓贵,何淑华,何辉,李晴暖,张岚..Th（NO3）4-UO2（NO3）2-HNO3-H2 O/30%TBP-正十二烷萃取体系主要组分分配比模型[J].原子能科学技术,2015,(11):1939-1945,7.基金项目
中国科学院战略性先导科技专项资助项目(XDA02030000) （XDA02030000）
