Modelling of the extraction of uranium with supercritical carbon dioxide

被引：13

作者：

Clifford, AA ^{[1
]}

Zhu, S

Smart, NG

Lin, YH

Wai, CM

Yoshida, Z

Meguro, Y

Iso, S

机构：

[1] Univ Leeds, Sch Chem, Leeds LS2 9JT, W Yorkshire, England

[2] BNFL, Res & Technol, Sellafield CA20 1PG, Cumbria, England

[3] Univ Idaho, Dept Chem, Moscow, ID 83843 USA

[4] Japan Atom Energy Res Inst, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan

来源：

JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY | 2001年 / 38卷 / 06期

关键词：

uranium; extraction; processing; supercritical fluid; carbon dioxide; clean technology; TBP; waste minimisation;

D O I：

10.3327/jnst.38.433

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

A model is presented for the analysis of the results of extraction of uranium in a flow system by supercritical fluid modified with tributylphosphate from a nitric acid matrix, in which the extraction is not limited by the solubility of the uranium species. The model used is that of diffusion out of a sphere into a medium in which the extracted uranium is infinitely dilute. Although not a completely accurate representation of the liquid-supercritical fluid system, the model is shown to be a reasonable representation and some conclusions discussed.

引用

页码：433 / 438

页数：6

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