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A UO2 Solubility Function for the Assessment of Used Nuclear Fuel Disposal

Frank Garisto, N. C. Garisto

Nuclear Science and Engineering

Volume 90 / Number 1 / May 1985 / Pages 103-110


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An explicit mathematical formula has been derived, using thermodynamic principles, for the calculation of uranium dioxide solubilities as a function of temperature, pH, oxidation potential, and anion (carbonate, phosphate, sulfate, or chloride) concentrations. The solubility of uranium dioxide in an underground used-fuel disposal vault can, therefore, be determined without the need for thermodynamic equilibrium programs.

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