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溶液-ベントナイトコロイド-花崗岩の三元系におけるCs・Am(III)の収着分配

Distribution of Cs and Am in the solution-bentonite colloid-granite ternary system

飯島 和毅; 中田 弘太郎*; 戸村 努*; 飛田 実*; 鈴木 康之*

Iijima, Kazuki; Nakata, Kotaro*; Tomura, Tsutomu*; Tobita, Minoru*; Suzuki, Yasuyuki*

溶液-ベントナイトコロイド-花崗岩の三元系におけるCs及びAmのバッチ式分配実験を行った。三元系でのベントナイトコロイドに対するCs分配係数は、溶液中のNa濃度を考慮すると、二元系で得られたイオン交換選択係数に基づく計算値と同程度であり、この系では二元系での収着分配予測手法を三元系へ適用可能と考えられた。

Batch type distribution experiments of Cs and Am in the solution-bentonite colloid-granite ternary system were carried out. Considering Na concentration, distribution coefficient of Cs on bentonite colloids obtained in the ternary system is similar to the calculated value using ion selectivity coefficient evaluated in the binary system. It indicates that the method to estimate the distribution behavior in the binary system is applicable to the ternary system in this case.

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