Отправить статью по E-mail Dissolution of WWER-1000 spent nuclear fuel in a weakly acidic solution of iron nitrate and recovery of actinides and rare earth elements with TBP solutions
- Авторы: Fedorov Y.1, Kulyako Y.2, Blazheva I.1, Goletskii N.1, Zilberman B.1, Metalidi M.1, Petrov Y.1, Ryabkova N.1, Vinokurov S.2, Trofimov T.2, Myasoedov B.2
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Учреждения:
- Khlopin Radium Institute
- Vernadsky Institute of Geochemistry and Analytical Chemistry
- Выпуск: Том 58, № 3 (2016)
- Страницы: 265-270
- Раздел: Proceedings of the VIII Russian Conference on Radiochemistry “Radiochemistry-2015” (Zheleznogorsk, Krasnoyarsk Krai, Russia, September 28–October 2, 2015)
- URL: https://journals.rcsi.science/1066-3622/article/view/223381
- DOI: https://doi.org/10.1134/S1066362216030073
- ID: 223381
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Аннотация
It is demonstrated on real solutions of samples of spent nuclear fuel (SNF) from WWER-1000 reactors (1000-MWel water-cooled water-moderated energy reactors) that weakly acidic solutions of iron(III) nitrate at the molar ratio Fe(III): U ≥ 2.0 dissolve SNF with quantitative transfer of U and Pu into the solution. In the process, Fe partially precipitates in the form of a basic salt precipitate together with a part of the fission products (>90% of Ru, ~90% of Мо, >60% of Tc, and 40% of Zr) already in the step of the fuel dissolution. Cs, Eu, and Am pass into the solution together with U and Pu. With the required conditions followed, U and Pu can be separated from the solution by precipitation of their peroxides or quantitatively extracted from this solution with 30% TBP in Isopar L. The presence of ≥1 M Fe(NO3)3 in the solution considerably increases the distribution ratios of TPE and REE, which allows their recovery from a weakly acidic nitrate solution to be also performed with 30% TBP in a diluent. This process can serve in the future as a basis for the development of a new integrated technology combining the PUREX process with TPE partitioning using a common extractant.
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Об авторах
Yu. Fedorov
Khlopin Radium Institute
Email: kulyako@geokhi.ru
Россия, 2-i Murinskii pr. 28, St. Petersburg, 197021
Yu. Kulyako
Vernadsky Institute of Geochemistry and Analytical Chemistry
Автор, ответственный за переписку.
Email: kulyako@geokhi.ru
Россия, ul. Kosygina 19, Moscow, 119991
I. Blazheva
Khlopin Radium Institute
Email: kulyako@geokhi.ru
Россия, 2-i Murinskii pr. 28, St. Petersburg, 197021
N. Goletskii
Khlopin Radium Institute
Email: kulyako@geokhi.ru
Россия, 2-i Murinskii pr. 28, St. Petersburg, 197021
B. Zilberman
Khlopin Radium Institute
Email: kulyako@geokhi.ru
Россия, 2-i Murinskii pr. 28, St. Petersburg, 197021
M. Metalidi
Khlopin Radium Institute
Email: kulyako@geokhi.ru
Россия, 2-i Murinskii pr. 28, St. Petersburg, 197021
Yu. Petrov
Khlopin Radium Institute
Email: kulyako@geokhi.ru
Россия, 2-i Murinskii pr. 28, St. Petersburg, 197021
N. Ryabkova
Khlopin Radium Institute
Email: kulyako@geokhi.ru
Россия, 2-i Murinskii pr. 28, St. Petersburg, 197021
S. Vinokurov
Vernadsky Institute of Geochemistry and Analytical Chemistry
Email: kulyako@geokhi.ru
Россия, ul. Kosygina 19, Moscow, 119991
T. Trofimov
Vernadsky Institute of Geochemistry and Analytical Chemistry
Email: kulyako@geokhi.ru
Россия, ul. Kosygina 19, Moscow, 119991
B. Myasoedov
Vernadsky Institute of Geochemistry and Analytical Chemistry
Email: kulyako@geokhi.ru
Россия, ul. Kosygina 19, Moscow, 119991
