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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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ANS joins others in seeking to discuss SNF/HLW impasse
The American Nuclear Society joined seven other organizations to send a letter to Energy Secretary Christopher Wright on July 8, asking to meet with him to discuss “the restoration of a highly functioning program to meet DOE’s legal responsibility to manage and dispose of the nation’s commercial and legacy defense spent nuclear fuel (SNF) and high-level radioactive waste (HLW).”
Werner Faubel, Sameh A. AL
Nuclear Technology | Volume 69 | Number 2 | May 1985 | Pages 178-185
Chemical Processing | doi.org/10.13182/NT85-A33629
Articles are hosted by Taylor and Francis Online.
A new procedure has been developed to decontaminate carbonate wash streams relevant to the Purex process from alpha-emitting actinides (238U, 237Np, 240Pu) and the fission products (95Zr, 144Ce, 106Ru). The actinides, forming with Na2CO3 carbonato complexes, for example, [UO2(CO3)3]4-, [NpO2(CO3)3]4-, and unstable Pu(IV) complexes, are retained on the weakly basic anion exchanger resin Bio Rex 5. Plutonium(IV) forms complexes or precipitates nearly completely, when standing for some time or heating up to 70°C. The precipitate can be separated from the carbonate solution by a 2-µm filter mounted in front of the column. Neptunium and the fission products coprecipitate partially at the same time and therefore are also retained. Uranium and the species (neptunium and fission products) remaining in the filtrate are also removed by the Bio Rex 5 column, whereby the effluent of the column is decontaminated to >99%. The recovery of the actinides and fission products from the resin and the filter is performed with three column volumes of 4MHNO3 >99%.