Abstract
Carbide nuclear fuel is most attractive for use in fast reactors. A general problem of hydrometallurgical reprocessing of spent carbide fuel is the formation of plutonium complexes with water-soluble organic compounds of an acidic nature, which are formed when such fuel dissolves in nitric acid. The drawbacks of the proposed methods of decomposing organic compounds include the possibility of secondary precipitation and reduction of the extractability of multivalent actinides, long-time limitations in choosing the structural materials of the equipment, and incomplete decomposition of organic compounds. Often, the solutions obtained are unsuitable for direct extractive reprocessing because of the need to remove corrosive reagents or their inorganic residues, which increases the volume of secondary wastes.
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