The Effect of carbonate ion on the dissolution of UO $_{2}$ pellet

Moroi, Yuriko*; Kirishima, Akira*; Akiyama, Daisuke*; Sato, Nobuaki*; Kitamura, Akira ; Kimuro, Shingo

Direct disposal of spent nuclear fuel is considered as an alternative option of geological disposal of high level radioactive wastes. In this case, the dissolution speed of uranium should be one of the most important parameter. In this study, the dissolution behavior of UO $_{2}$ in the simulated groundwater contains high concentration of carbonate ion was investigated, then, it was revealed that uranium dissolution was promoted by the carbonate ion.

Language	:	Japanese
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Meeting title	:	日本原子力学会2019年秋の大会
Held date	:	2019/09
Location (city)	:	富山
Location (country)	:	日本
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Keywords	:	直接処分; UO2; 炭酸イオン濃度; 還元雰囲気; 溶解速度
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Article of JAEA R&D Review	:
Cooperating Institute	:	経済産業省資源エネルギー庁

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Registration No. : BB20190266
JAEA Abstracts No. :
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The Effect of carbonate ion on the dissolution of UO pellet

The Effect of carbonate ion on the dissolution of UO $_{2}$ pellet