Fundamental study on electrolyte recycle process by phosphates conversion technique
- Japan Atomic Energy Agency, 4-33 Muramatsu, Tokai-mura, Naka-gun, Ibaraki Pref. 319-1109 (Japan)
- Dept. of Nuclear Engineering and Management, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656 (Japan)
Fission product elements (FP) such as alkali metals, alkaline earth metals and rare-earth elements (REE) are apt to remain in the eutectic medium used in pyro-reprocessing even after treatment at the pyro-contactor step. It is desirable to have the spent electrolyte purified for recycling which in turn, could lead to the reduction of high-level radioactive wastes. This study is carried out to evaluate the feasibility of the electrolyte recycle process by the phosphates conversion technique. First of all, a reference block flow diagram, which consists of three steps, i.e., 'Spent Electrolyte Regeneration Step', 'Phosphates Conversion Step', and 'Phosphates Immobilization Step', was designed based on known developmental results from literature. Subsequently, evaluation was undertaken by comparison with conventional relevant experimental and theoretical analysis results after gathering the essential basic data for thermodynamic calculation. The obtained computational value was then reflected to establish the preliminary conceptual flow diagram which would facilitate the next discussion and experiment for the realization of this process. (authors)
- Research Organization:
- American Nuclear Society, 555 North Kensington Avenue, La Grange Park, IL 60526 (United States)
- OSTI ID:
- 20979624
- Resource Relation:
- Conference: Advanced nuclear fuel cycles and systems (GLOBAL 2007), Boise - Idaho (United States), 9-13 Sep 2007; Other Information: Country of input: France; 47 refs; Related Information: In: Proceedings of GLOBAL 2007 conference on advanced nuclear fuel cycles and systems, 1873 pages.
- Country of Publication:
- United States
- Language:
- English
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