Abstract
Bentonite was irradiated with 60Co γ-rays at a dose rate of 10 kGy/h to achieve irradiation doses of 1, 2, 3 MGy and was characterized to evaluate its stability before and after irradiation and understand the radiation damage mechanism. The structure of the bentonite was slightly affected by high doses of irradiation, and the U(VI) adsorption capacity of the irradiated bentonite was reduced compared to that of raw bentonite. Overall, this study provides insights into the negative effects of high-dose γ-ray irradiation on the stability and adsorption capacity of bentonite, which has safety implications for the storage of radioactive waste.
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This work was supported by grants from the Opening Fund of Provincial Key Lab of Applied Nuclear Techniques in Geosciences (No. gnzds202102) and Sichuan Science and Technology Program (No. 2020JDRC0112).
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Cheng, J., Gu, R., He, P. et al. Effect of high-dose γ-ray irradiation on the structural stability and U(VI) adsorption ability of bentonite. J Radioanal Nucl Chem 331, 339–352 (2022). https://doi.org/10.1007/s10967-021-08117-9
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DOI: https://doi.org/10.1007/s10967-021-08117-9