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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Mimura, Hitoshi Sakakibara, Takashi Yan, Wu Niibori, Yuichi Koyama, Shin-Ichi Ohnishi, Takashi |
| Copyright Year | 2010 |
| Abstract | Fine crystalline powders of KCuFC were immobilized with alginate gel polymers by sol-gel methods. The uptake properties of KCuFC-microcapsules (KCuFC-MC) were examined by batch and column methods. The size of KCuFC-MC particle was estimated to be about 1 mm in diameter, and KCuFC powders were uniformly dispersed in KCuFC-MC particles. The uptake rate of Pd2+ for KCuFC-MC was attained within 3 d, and the uptake of Pd2+ was found to be independent of the temperature and coexisting HNO3 concentration. As for the breakthrough properties of Pd2+ through a column packed with KCuFC-MC, a breakpoint of 5% breakthrough was enhanced with lowering of flow rate and independent of coexisting HNO3 concentration. The Pd2+ ions were selectively adsorbed in the KCuFC crystal phase, while other metal ions such as Ru(NO)3+ and ZrO2+ were absorbed in the alginate phase. High uptake percentage of 98.6% was obtained by using the dissolved solutions of spent fuel from FBR-JOYO (119 GWd/t, JAEA). The alginate film enclosing KZnFC was further prepared by using the support of cellulose filter paper, where the Pd2+ ions were selectively adsorbed on the KZnFC-MC film. The alginate film enclosing insoluble ferrocyanides are predicted for the selective separation of Pd2+ as an ion-exchange filter. Thus, the microcapsules enclosing insoluble ferrocyanides are effective for the selective separation of Pd2+ from high-level liquid waste (HLLW). |
| Sponsorship | Nuclear Engineering Division and Environmental Engineering Division |
| Starting Page | 265 |
| Ending Page | 272 |
| Page Count | 8 |
| File Format | |
| ISBN | 9780791854532 |
| DOI | 10.1115/ICEM2010-40103 |
| e-ISBN | 9780791838884 |
| Volume Number | ASME 2010 13th International Conference on Environmental Remediation and Radioactive Waste Management, Volume 2 |
| Conference Proceedings | ASME 2010 13th International Conference on Environmental Remediation and Radioactive Waste Management |
| Language | English |
| Publisher Date | 2010-10-03 |
| Publisher Place | Tsukuba, Japan |
| Access Restriction | Subscribed |
| Subject Keyword | Selective uptake Filter Sol-gel methods Microcapsule Insoluble ferrocyanides Palladium Fbr-joyo Temperature Metals Crystals Spent nuclear fuels Ions Sol-gel processing Separation (technology) Flow (dynamics) Filters Particulate matter Ion exchange Polymers |
| Content Type | Text |
| Resource Type | Article |
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