Solubility of Lanthanide Fluorides in Nitric Acid Solution in the Dissolution Process of FLUOREX Reprocessing System
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概要
- 論文の詳細を見る
A new reprocessing technology, FLUOREX, is proposed for the thermal reactor cycle. In the dissolution process of FLUOREX, it needs to estimate the concentration of fluoride ion in the solution to avoid formation of insoluble plutonium precipitate. We measured the solubility products of lanthanide fluorides, LaF3, CeF3, and NdF3 in nitric acid solution and evaluate the concentration of fluoride ion in the dissolution process. Solubilities were measured by both of dissolution method and precipitation method. The solubility products are about 101 to 102 times larger than those in water. This largeness may be caused by higher ionic strength of nitric acid solution. The newly obtained solubility products for the lanthanides are useful to calculate the maximum concentration of plutonium ions in the FLUOREX dissolution process, although the further study for the solubility products for plutonium tetrafluoride is needed in the nitric acid solution.
- 一般社団法人 日本原子力学会の論文
- 2004-01-25
著者
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Aoi Masakatsu
Nuclear Systems Division Hitachi Ltd.
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Amano Osamu
Nuclear Power R&d Center Tokyo Electric Power Company
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Kawamura F
Hitachi Works Hitachi Ltd.
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KAWAMURA Fumio
Nuclear Systems Division, Hitachi, Ltd
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Kani Yuko
Power & Industrial Systems R&d Laboratory Hitachi Ltd.
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Sasahira A
Power And Industrial Systems R&d Laboratory Hitachi Ltd.
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Sasahira Akira
Power And Industrial Systems R&d Laboratory Hitachi Ltd
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HOSHINO Kuniyoshi
Nuclear Systems Division, Hitachi, Ltd.
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Hoshino Kuniyoshi
Hitachi Works Hitachi Ltd.
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Kawamura Fumio
Nuclear Systems Division Hitachi Ltd
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Amano Osamu
Nuclear Power R & D Center, Tokyo Electric Power Company
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SASAHIRA Akira
Power & Industrial Systems R&D Laboratory, Hitachi, Ltd.
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