Premium
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