Preparation of Hexavalent Americium in Nitric Acid Solution
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概要
- 論文の詳細を見る
Fundamental investigations on preparation of Am(VI) in nitric acid solutions of various concentrations were carried out in order to develop a partitioning method for americium from high level liquid waste generated from the reprocessing of spent fuel. A mixture of ammonium peroxodisulfate and silver nitrate was used as oxidizing reagent. The yields of Am(VI) were determined as a function of the concentrations of nitric acid (0.01-2M) and oxidizing reagent (0.1-2M) and temperature (55-85°C). The yield of Am(VI) decreased with increasing concentration of nitric acid. In 1M nitric acid solution, increasing the concentration of ammonium peroxodisulfate resulted in increased of Am(VI) yield. When 1.5M ammonium peroxodisulfate and 0.01M silver nitrate were used, 90% of the americium in 1M nitric acid solution was oxidized to the hexavalent state at 85°C.
- 社団法人 日本原子力学会の論文
- 1995-08-25
著者
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Kawamura F
Hitachi Works Hitachi Ltd.
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FUKASAWA Tetsuo
Hitachi Works, Hitachi, Ltd.
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Kamoshida Mamoru
Energy Research Laboratory Hitachi Ltd.
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Fukasawa T
Hitachi Works Hitachi Ltd.
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FUKUSAWA Tetsuo
Energy Research Laboratory, Hitachi Ltd.
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KAWAMURA Fumio
Energy Research Laboratory, Hitachi Ltd.
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