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Ultrasound enhancement of dissolution kinetics of uranium oxides in supercritical carbon dioxide

✍ Scribed by Trofimov, T. I. (author);Samsonov, M. D. (author);Lee, S. C. (author);Smart, N. G. (author);Wai, C. M. (author)

Publisher
Wiley (John Wiley & Sons)
Year
2001
Tongue
English
Weight
142 KB
Volume
76
Category
Article
ISSN
0268-2575

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✦ Synopsis

Abstract

The enhanced dissolution of uranium oxides by the application of ultrasound in supercritical fluid carbon dioxide containing dissolved 4,4‐trifluoro‐1‐(2‐thienyl)‐1,3‐butanedione and tributyl phosphate is demonstrated. Under conditions of 60 °C and 150 atm the steady state dissolution of UO~3~ with sonification is increased by approximately 100%. Furthermore, the effect of adding hydrogen peroxide to the supercritical system above enables the lower oxides of uranium, UO~2~ and U~3~O~8~, to be extracted.

Β© 2001 Society of Chemical Industry

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