Preliminary Evaluation of Solvent-Extraction and/or Ion-Exhange Process for Meeting AAA Program Multi-Tier Systems Recovery and Purification Goals

摘要

Several potential processes are described and evaluated for their suitability in a multi-tier aqueous-based approach to processing dissolved spent nuclear fuel under the Advanced Accelerator Applications (AAA) program. The evaluation is focused on solvent extraction and ion exchange technologies that have been demonstrated to varying degrees. The goals of the program are to separate uranium (U), technetium (Tc), and the transuranic (TRU) elements from the fission products that are to be vitrified for disposal as high-level waste (HLW). Uranium will be disposed as low-level waste (LLW); Tc and TRU will be transmuted in an accelerator.