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溶融塩処理による和田石生成過程の反応機構

Reaction mechanism of Wadalite formation process in molten salt treatment

奥本 峻介*; 飯野 千秋*; 小田 将人*; 村口 正和*; 早川 虹雪*; 石井 宏幸*; 本田 充紀   

Okumoto, Shunsuke*; Iino, Chiaki*; Oda, Masato*; Muraguchi, Masakazu*; Hayakawa, Kosetsu*; Ishii, Hiroyuki*; Honda, Mitsunori

福島の環境回復に係る研究開発の一環として、溶融塩法を用いた風化黒雲母からCs除去に関する研究を推進してきた。99.9999%のCs除去と普通輝石、和田石などの結晶鉱物の生成を確認しているが、反応過程および生成物に関する原子レベルでの反応機構が必要であり、本研究では第一原理計算をもちいて和田石の安定構造を調べ、求められた安定構造を用いて反応機構について調べて内容について報告する。

As part of research and development for environmental restoration of Fukushima, we have conducted study on Cs removal from weathered biotite using molten salt method. 99.9999% or less of Cs removal and formation of crystalline minerals such as ordinary Augite and wadalite were confirmed, but the atomic-level reaction mechanism of the reaction process and products is necessary. In this study, the stable structure of wadalite was investigated using first-principles calculations, and the reaction mechanism was investigated using the obtained stable structure.

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