Modelling of liquid-liquid equilibria of extraction systems for the prediction of the radionuclides distribution coefficients

被引：0

作者：

Myagkova-Romanova, MA ^{[1
]}

Makarov, LL ^{[1
]}

机构：

[1] St Petersburg State Univ, Dept Radiochem, St Petersburg 199034, Russia

来源：

CZECHOSLOVAK JOURNAL OF PHYSICS | 2003年 / 53卷

关键词：

D O I：

10.1007/s10582-003-0060-5

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Software package UNIEXT has been developed for modelling the solvent extraction of radionuclides. The program for computing phase equilibria and distribution coefficient of the radionuclide in mixed-solvent systems is described. Application of the corresponding thermodynamic model to the calculations makes possible to predict properties of the extraction mixtures, which have not been investigated by chemical methods. A method allows building phase diagrams of the extraction mixture, fitting parameters of model from experimental database, and investigating solvent and ligand effects on separation process. Several examples of uranyl salts -water -organic solvents phase diagrams computered by UNIEXT are provided and compared with the experimental data. The UNIEXT package is especially useful in planning and executing chemical experiments aimed to find new efficient extraction systems for radionuclides.

引用

页码：A467 / A478

页数：12