Photochemically Produced U(IV) as a Reductant for Pu(IV) and Applications in Nuclear Fuel Reprocessing

DePoorter, G.L.; Rofer-DePoorter, C.K.; Hayter, S.W.

doi:10.13182/nt79-a16304

Cited by 12 publications

(2 citation statements)

References 8 publications

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“…The reduction of Pu(^ to Pu(III) by l^iotodiemically produced U(rV) provides a means for the Separation of Pu from U in the PUREX process based on the above properties of the uranyl Ion [12,13]. Nitrite formation can be suppressed by light filtering and temperature control [13,14]. The reaction with reductants, R, e.g.…”

Section: Photochemistry In Reprocessingmentioning

confidence: 99%

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A Photochemical Head-end Step in Carbide Fuel Reprocessing

Bokelund¹,

Caceci²,

Müller³

1983

Radiochimica Acta

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U, Pu corbides IReprocessing of nuclear fuels /Photochemistry / Oxidation of organic Compounds/Th? extraction Summaty A photochemical oxidation process is discussed in the context of the reprocessing of mixed uranium, plutonium carbide fuels. The organic Compounds formed in the Solution of the dissolved carbides can be removed by photolysis in a head-end treatment prior to the PUREX extraction process.The course of the photochemical oxidation of the carbonaceous by-products as a function of nitric acid molarity is foUowed by measurements of the formation of CO,, by the changes in the absorption spectrum of the Solution and by the Variation in the extractability of plutonium with 30% TBP.Dissolution in a circulation set-up with the concomitant exposure to light is the most efficient.

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Section: Photochemistry In Reprocessingmentioning

confidence: 99%

“…Reaction (8) is only due to light having wavelengths below 350 tun; NOJ is also produced thermally [13]. The reactions between the excited uranyl ion, *U02^, and an organic species are irreversible, as they produce unstable organic radicals (e.g.…”

Section: Dissolution Of Mixed Carbidementioning

confidence: 99%