Dissolution of PuO2 in HNO3-HF-N2H4 Medium

Mrs. Abdul Majeed Shakila; Thandangorai Ganapathi Srinivasan; Kanwal Nain Sabharwal; Polur Rangarao Vasudeva Rao

doi:dx.doi.org/10.13182/NT87-A16009

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Home / Publications / Journals / Nuclear Technology / Volume 79 / Number 1

Dissolution of PuO₂ in HNO₃-HF-N₂H₄ Medium

Mrs. Abdul Majeed Shakila, Thandangorai Ganapathi Srinivasan, Kanwal Nain Sabharwal, Polur Rangarao Vasudeva Rao

Nuclear Technology / Volume 79 / Number 1 / October 1987 / Pages 116-119

Technical Note / Chemical Processing / dx.doi.org/10.13182/NT87-A16009

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The thermodynamic solubility of PuO₂ in nitric acid has been calculated, taking into account the formation of higher nitrate complexes of plutonium at higher acidities. The dissolution of PuO₂ in nitric acid containing hydrofluoric acid and hydrazine has been studied. The results indicate that the presence of hydrazine in nitric acid containing hydrofluoric acid aids the dissolution of PuO₂. The destruction of hydrazine after the dissolution step is found to be easy.