A mathematical model of co-decontamination process (1A) containing U(VI), Pu(IV), Zr(IV), and Ru(III) was developed with a high-performance Iteration of Extraction Equilibrium (ITEE) algorithm. ITEE algorithm not only guarantees the positive solution set but also possesses better computational efficiency than L-BFGS-B and fsolve algorithms. This model was used to study the effects of the HNO₃ concentration and the location of the feed stage on the extraction and decontamination efficiencies. The results show HNO₃ is beneficial to the extraction of U, Pu, and Zr. More extraction stages boost the extraction of U and Pu into the organic phase.

使用高性能的萃取平衡迭代 (ITEE) 算法开发了包含 U(VI)、Pu(IV)、Zr(IV) 和 Ru(III) 的共净化过程 (1A) 的数学模型。ITEE算法不仅保证了正解集，而且比L-BFGS-B和fsolve算法具有更好的计算效率。该模型用于研究 HNO ₃浓度和进料阶段位置对萃取和净化效率的影响。结果表明HNO ₃有利于U、Pu和Zr的提取。更多的萃取阶段促进了 U 和 Pu 萃取到有机相中。