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

Trofimov T I | Zendy; Samsonov M D | Zendy; Lee S C | Zendy; Smart N G | Zendy; Wai C M | Zendy

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

Author(s) -

Trofimov T I,

Samsonov M D,

Lee S C,

Smart N G,

Wai C M

Publication year - 2001

Publication title -

journal of chemical technology and biotechnology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.64

H-Index - 117

eISSN - 1097-4660

pISSN - 0268-2575

DOI - 10.1002/jctb.509

Subject(s) - dissolution , supercritical fluid , supercritical carbon dioxide , uranium , hydrogen peroxide , kinetics , carbon dioxide , chemistry , tributyl phosphate , uranium dioxide , inorganic chemistry , nuclear chemistry , radiochemistry , materials science , organic chemistry , metallurgy , physics , quantum mechanics , extraction (chemistry)

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. © 2001 Society of Chemical Industry

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