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The speciation of hexavalent U and tetravalent Pu will be examined in the TBP-dodecane-nitric acid systems. This topic is chosen based on data needs for separation modeling identified by the AFCI. Emphasis will be placed on studying the influence of nitrate and acetohydroxamic acid on U and Pu speciation as well as conditions where a third phase forms in the organic phase. The organic phase will be 30% TBP in dodecane. Equal volumes of aqueous and organic phase will be used. The speciation of the actinides in the aqueous and organic phase will be determined by a number of different spectroscopic and radiochemical techniques. Additionally the actinide distribution between the phases as a function of conditions will be determined. The project data will be incorporated into models to evaluate separations under a variety of conditions.
Nitric acid; Plutonium; Radioactive wastes – Purification; Separation (Technology); Tributyl phosphate; Uranium
Nitric acid; Radioactive wastes--Purification; Tributyl phosphate
Analytical Chemistry | Chemical Engineering | Chemistry | Nuclear Engineering | Oil, Gas, and Energy | Physical Chemistry | Radiochemistry
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Fundamental Chemistry of U and Pu in the TBP-Dodecane-Nitric Acid System.
Available at: https://digitalscholarship.unlv.edu/hrc_trp_separations/85