<abstract xmlns="http://www.w3.org/1999/xhtml">In light of the issue of radiolysis of the solvent system in PUREX process, alpha and gamma radiation stability of tributyl phosphate (TBP)/kerosene (OK) have been studied in this paper, in which 238Pu dissolved in the organic phase and 60Co are selected as alpha and gamma irradiation sources, respectively. The amount of the degradation products not easily removed after the washing process has been measured by the plutonium retention. The effects of the absorbed dose, the TBP volume fraction, the cumulative absorbed dose and the presence of UO2 2+ and Zr4+ on the radiolysis of the solvents have been investigated. The results have indicated that the Pu retention increases with the increase of the absorbed dose after alpha or gamma irradiation, and is larger for the solvent containing less TBP. There is competition between UO2 2+ and Pu4+ to complex with the degradation products, and Zr4+ accelerates the radiolysis of the system.</abstract>

In light of the issue of radiolysis of the solvent system in PUREX process, alpha and gamma radiation stability of tributyl phosphate (TBP)/kerosene (OK) have been studied in this paper, in which 238Pu dissolved in the organic phase and 60Co are selected as alpha and gamma irradiation sources, respectively. The amount of the degradation products not easily removed after the washing process has been measured by the plutonium retention. The effects of the absorbed dose, the TBP volume fraction, the cumulative absorbed dose and the presence of UO2 2+ and Zr4+ on the radiolysis of the solvents have been investigated. The results have indicated that the Pu retention increases with the increase of the absorbed dose after alpha or gamma irradiation, and is larger for the solvent containing less TBP. There is competition between UO2 2+ and Pu4+ to complex with the degradation products, and Zr4+ accelerates the radiolysis of the system.

Influence of alpha and gamma radiolysis on Pu retention in the solvent TBP/kerosene

Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, Harbin Engineering University, Harbin, Heilongjiang Province, China, 150001 and Institute of Radiochemistry, China Institute of Atomic Energy, Beijing, China, 102413, Tel.: +86 451 8251 8913, Fax: +86 451 8251 8400

Institute of Radiochemistry, China Institute of Atomic Energy, Beijing, China, 102413

Fundamental Science on Nuclear Safety and Simulation Technology Laboratory, Harbin Engineering University, Harbin, Heilongjiang Province, China, 150001

Nukleonika

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In light of the issue of radiolysis of the solvent system in PUREX process, alpha and gamma radiation stability of tributyl phosphate (TBP)/kerosene (OK) have...

Influence of alpha and gamma radiolysis on Pu retention in the solvent TBP/kerosene

Publié en ligne: 30 déc. 2014

Pages: 123 - 128

Reçu: 24 mai 2014

Accepté: 23 oct. 2014

DOI: https://doi.org/10.2478/nuka-2014-0024

© by Yang Gao

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.