Characterization of the Insoluble Sludge from the Dissolution of Irradiated Fast Breeder Reactor Fuel
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- 作者：Haruka Aihara ; aihara.haruka@jaea.go.jp ; Yoichi Arai ; Atsuhiro Shibata ; Kazunori Nomura ; Masayuki Takeuchi
- 关键词：Nuclear Fuel Reprocessing ; Insoluble sludge ; Platinum group element ; Irradiated mixed-oxide fuel ; Fast breeder reactor fuel cycle
- 刊名：Procedia Chemistry
- 出版年：2016
- 出版时间：2016
- 年：2016
- 卷：21
- 期：Complete
- 页码：279-284
- 全文大小：250 K
- 卷排序：21
文摘
Insoluble sludge is generated in the reprocessing of spent fuel. The sludge obtained from the dissolution of irradiated fuel from the “Joyo” experimental fast reactor was analyzed to evaluate its chemical form. The sludge was collected by the filtration of the dissolved fuel solution, and then washed in nitric acid. The yields of the sludge weight were less than 1% of the total fuel weight. The chemical composition of the sludge was analyzed after decomposition by alkaline fusion. Molybdenum, technetium, ruthenium, rhodium, and palladium were found to be the main constituent elements of the sludge. X-ray diffraction patterns of the sludge were attributable to Mo4Ru4RhPd, regardless of the experimental conditions. The concentrations of molybdenum and zirconium in the dissolved fast reactor fuel solutions were low, indicating that zirconium molybdate hydrate is produced in negligible amounts in the process.