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The oxidation dissolution of uranium oxides in carbonate-peroxide aqueous solution

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Abstract

The dissolution behaviors of uranium oxides (UO2, U3O8, and UO2(O2)·4H2O) and the dissolved species of uranium in the carbonate-peroxide solution were investigated by UV–vis absorption spectrometry and interpreted by a theoretically calculated spectrum. The results indicate that the same dominant species (UO2(O2)(CO3)24−) in the solution was observed in spite of the differences among the three uranium oxides. Additionally, the dissolution of UO2(O2)·4H2O was found to be occurring much more rapidly in carbonate solution than those of UO2 and U3O8. The concentration of dissolved uranium for UO2(O2)·4H2O in the carbonate-peroxide solution could reach about 300 g/L.

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Acknowledgements

We acknowledge financial support from the National Natural Science Foundation of China (U1967219)

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Authors and Affiliations

  1. College of Nuclear Science and Technology, Harbin Engineering University, Harbin, 150051, Heilongjiang Province, People’s Republic of China

    Chenxi Hou, Mingjian He, Chunhui Li, Meng Zhang, Caishan Jiao & Hui He

  2. Department of Radiochemistry, China Institute of Atomic Energy, Beijing, 102413, People’s Republic of China

    Hui He

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Hou, C., He, M., Li, C. et al. The oxidation dissolution of uranium oxides in carbonate-peroxide aqueous solution. J Radioanal Nucl Chem 332, 917–923 (2023). https://doi.org/10.1007/s10967-022-08652-z

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