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Modeling Eu(III) sorption on granite

Eu(III)の花崗岩への吸着モデリング

前田 耕志*; 福士 圭介*; 長谷川 優介*; 山本 祐平; 青才 大介; 水野 崇 

Maeda, Koshi*; Fukushi, Keisuke*; Hasegawa, Yusuke*; Yamamoto, Yuhei; Aosai, Daisuke; Mizuno, Takashi

There have been very few researches for the trace elements sorption on complex mineral assemblages such as rocks, sediments and soils. In the present study, the batch sorption experiments of Eu(III) on granite were conducted as function of pH, ionic strength and surface loadings to understand the migration of trace elements on geologic media. As the result of experiments, sorption ratio of Eu(III) was almost zero at pH 2. They abruptly increase with pH up to 3.5. Above pH 3.5, the sorption ratio indicates almost constant. The sorption strongly depends on ionic strength at the pH more than 3.5.

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