Dissolution Mechanism of UO2 in Nitric Acid Solution by Photochemical Reaction |
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| Authors: | Eung-Ho Kim Doo-Sung Hwang Jae-Hyung Yoo |
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| Affiliation: | (1) Korea Atomic Energy Research Institute, P.O.Box 105, Yusong, Taejon, 305-600, Korea;(2) Korea Atomic Energy Research Institute, P.O.Box 105, Yusong, Taejon, 305-600, Korea |
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| Abstract: | Photodissolution tests of UO2 sintered pellets were carried out in 3M nitric acid solution and at about 50 °C under UV irradiation. The light source was a Hg-lamp emitting a light of 254nm wavelength. In the products, chemicals such as H2O2 and NO2– ion were detected during photodissolution of the UO2 sintered pellets. Based on this result, a new dissolution mechanism of UO2 in nitric acid solution by photochemical reaction was suggested in this study. |
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