Dissolution of oxide nuclear fuel in sub-acid ferric nitrate solutions and extraction of uranium from it using tributyl phosphate-containing supercritical carbon dioxide

2013, №2

сс. 61-67

M.D. Samsonov, T.I. Trofimov, S.E. Vinokurov, Yu.M. Kulyako, B.F. Myasoedov

Key words: supercritical fluid extraction, liquid and supercritical carbon dioxide, spent nuclear fuel reprocessing, complexation, tributyl phosphate, aqueous Fe(III) nitrate solutions

Solubility of UO₂(NO₃)₂-tributyl phosphate (TBP) complex in liquid and supercritical
(SC) carbon dioxide as a function of temperature and pressure is measured. This
complex is formed during the dissolution of uranium oxide in two-phase system consisting
of aqueous iron nitrate solution and liquid or supercritical CO₂ saturated with
TBP. Kinetics of ceramic UO₂ dissolution in such two-phase solvent is studied. The
feasibility of the recovery of uranium from spent oxide nuclear fuels via its dissolution
in sub-acid iron nitrate aqueous solutions accompanied by simultaneous extraction of
the above mentioned complex into «TBP — SC-CO₂» phase is demonstrated.

Translated article

doi:10.1134/S1990793114070124

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ГОСТ
7.0.100-2018

Самсонов, М.Д. Dissolution of oxide nuclear fuel in sub-acid ferric nitrate solutions and extraction of uranium from it using tributyl phosphate-containing supercritical carbon dioxide / М.Д. Самсонов, Т.И. Трофимов, С.Е. Винокуров [и др.]. – Текст : непосредственный // Сверхкритические Флюиды: Теория и Практика.. – 2013. – Т. 8. – № 2. – С. 61-67.

TRANSLIT

Samsonov, M.D. Rastvorenie oksidnogo yadernogo topliva v slabokislyh rastvorah nitrata zheleza(III) i izvlechenie iz nego urana s pomoshch'yu sverhkriticheskogo dioksida ugleroda, soderzhashchego tributilfosfat / M.D. Samsonov, T.I. Trofimov, S.E. Vinokurov [i dr.]. – Sverhkriticheskie Flyuidy: Teoriya i Praktika.. – 2013. – Т. 8. – № 2. – S. 61-67.

M.D. Samsonov, T.I. Trofimov, S.E. Vinokurov, Yu.M. Kulyako, B.F. Myasoedov Dissolution of oxide nuclear fuel in sub-acid ferric nitrate solutions and extraction of uranium from it using tributyl phosphate-containing supercritical carbon dioxide. Sverhkriticheskie Flyuidy: Teoriya i Praktika, 2, 61-67 (2013). https://doi.org/

Dissolution of oxide nuclear fuel in sub-acid ferric nitrate solutions and extraction of uranium from it using tributyl phosphate-containing supercritical carbon dioxide

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