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荒井 陽一; 渡部 創; 長谷川 健太; 岡村 信生; 渡部 雅之; 武田 啓佑*; 福元 博基*; 吾郷 友宏*; 羽倉 尚人*; 塚原 剛彦*
Nuclear Instruments and Methods in Physics Research B, 542, p.206 - 213, 2023/09
被引用回数：1 パーセンタイル：0.02(Instruments & Instrumentation)Spent PUREX solvent, which mainly consists of tributyl phosphate (TBP) and normal dodecane, is generated by solvent extraction of Plutonium and Uranium in the spent nuclear fuel reprocessing. One of the treatment options for storage of the spent solvent is adsorption of the liquid into vermiculite. The organic liquid is considered to be trapped between layers of the vermiculite. Our previous experiments on the adsorption of spent solvent into the vermiculite have shown that some parts of loaded solvent gradually leaked out from the vermiculite. In order to investigate the adsorption mechanism and capacity, elution behavior of the loaded solvent into organic diluents were evaluated. A part of the loaded solvent was easily leaked into the diluent, while some solvent remained inside the particle even after the leaching test. In this study, the adsorption capacity of the vermiculite was evaluated through amount of remaining solvent after washing with diluents. The amount of the remaining solvent was analyzed by Particle Induced X-ray Emission (PIXE) on P contained in TBP. Peak intensity of P-K
line depended on the washing condition, and the behavior of the amount of change in adsorbed P atom qualitatively agreed with the results of the leaching test.
荒井 陽一; 渡部 創; 長谷川 健太; 岡村 信生; 渡部 雅之; 武田 啓佑*; 福元 博基*; 吾郷 友宏*; 羽倉 尚人*; 塚原 剛彦*
no journal, ,
The spent extraction solvent, which mainly consists of tributyl phosphate (TBP) and normal dodecane, is generated by solvent extraction of Plutonium and Uranium in the reprocessing. The spent solvent should be appropriately treated for disposal or storage. One of the treatment options for storage of the spent solvent is adsorption of the liquid into vermiculite. Our previous experiments on the adsorption of spent solvent into the vermiculite have shown that some parts of loaded solvent gradually leaked out from the vermiculite. In order to investigate the adsorption mechanism and capacity more precisely, elution behavior of loaded solvent into hexane or acetone was evaluated. In this study, the adsorption capacity of the vermiculite was evaluated through amount of remaining solvent after washing with diluents. The amount of the remaining solvent was analyzed by Particle Induced X-ray Emission (PIXE) on P contained in TBP. Peak intensity of P-K line depended on the washing condition, and the behavior qualitatively agreed with the results of the leaching test.
武田 啓佑*; 荒井 陽一; 渡部 創; 福元 博基*; 吾郷 友宏*
no journal, ,
STRADプロジェクトの一環として実施してきた廃溶媒処理に係る吸着材の開発について、廃液中から金属イオンを吸着するフッ素系配位子の合成を進めている。本発表においては抽出剤の合成プロセスと共に、パーフルオロ基の合成数が抽出操作や性能に与える影響についても報告する。
武田 啓佑*; 荒井 陽一; 渡部 創; 福元 博基*; 吾郷 友宏*
no journal, ,
廃溶媒処理に係る吸着材の開発について、廃液中から金属イオンを吸着するフッ素系配位子の合成を進めている。本発表においては、キレート効果を示す官能基のパートを変更した配位子について、吸着性能の違いを調査した。
武田 啓佑*; 荒井 陽一; 渡部 創; 福元 博基*; 吾郷 友宏*
no journal, ,
STRADプロジェクトの一環として実施してきた廃溶媒処理に係る吸着材の開発について、廃液中から金属イオンを吸着するフッ素系配位子の合成を進めている。本発表においては、先行研究の知見を利用し、イミノ二酢酸に配位させるパーフルオロ基の構造が抽出性能に与える影響について報告する。
