Citation: Dong Xue, Xu Chao, Chen Jing. Progress in the Oxidation Separation of Americium in Nuclear Fuel Cycles[J]. Chemistry, ;2020, 83(4): 289-295. shu

Progress in the Oxidation Separation of Americium in Nuclear Fuel Cycles

Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084

Received Date: 9 December 2019
Accepted Date: 8 January 2020

Figures(4)

Americium mainly exists as trivalent Am(Ⅲ) in aqueous solutions. Due to the similarity in ionic radius and chemical properties of Am(Ⅲ) and trivalent lanthanides (Ln(Ⅲ)), the separation of Am(Ⅲ) from Ln(Ⅲ) is regarded as one of the most challenging tasks in nuclear fuel cycles. Am(Ⅲ) can be oxidized to higher oxidation states such as AmO₂⁺ and AmO₂²⁺ through different oxidation methods and then it could be separated from Ln(Ⅲ) by using well-developed solvent extraction or precipitation methods, providing a new route for the separation of Am from Ln. In this paper, the progress on the oxidation separation of Am(Ⅲ) in nuclear fuel cycles have been reviewed, the oxidation principles and relevant mechanisms were described, the advantages and disadvantages of various methods were compared, and the future trends for the oxidation separation of Am(Ⅲ) were also discussed. It hopes to provide a guidance for developing novel techniques for the separation of actinides and lanthanides.
- Actinides/lanthanides separation,
- Americium,
- Lanthanides,
- Oxidation
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