In collaboration with Oak Ridge National Laboratory, our project, Group Hexavalent Actinide Separation: A Single-Step, Proliferation-Resistant Approach to Nuclear Fuel Reprocessing, has been selected for funding by the ARPA-E CURIE program. This project aims to develop a single-step technology to recycle used nuclear fuel (UNF) that can recover the bulk of uranium (U) and transuranics (TRU) as the first step after dissolution in nitric acid. We will work toward the recycling of UNF through the co-crystallization of oxidized TRU with uranyl nitrate hexahydrate. This single-step, group actinide separation will (1) significantly reduce the volume of light-water reactor high-level radioactive waste that requires permanent disposal, (2) provide an appropriate fuel feedstock by combining U/TRU in a single product stream, (3) reduce fission product content in the product stream to <0.1%, and (4) provide compatibility with online monitoring technologies.
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