| 研究課題/領域番号 |
21K14574
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| 研究種目 |
若手研究
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| 配分区分 | 基金 |
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| 審査区分 |
小区分31020:地球資源工学およびエネルギー学関連
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| 研究機関 | 九州大学 |
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研究代表者 |
GUO BINGLIN 九州大学, 工学研究院, 学術研究員 (60839588)
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| 研究期間 (年度) |
2021-04-01 – 2022-03-31
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| 研究課題ステータス |
中途終了 (2021年度)
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| 配分額 *注記 |
4,420千円 (直接経費: 3,400千円、間接経費: 1,020千円)
2022年度: 2,470千円 (直接経費: 1,900千円、間接経費: 570千円)
2021年度: 1,950千円 (直接経費: 1,500千円、間接経費: 450千円)
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| キーワード | selectivity / anions / cement / immobilization / pollutants / anionic pollutants / selevtivity / minerals / DFT calculation |
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| 研究開始時の研究の概要 |
The better understanding of the mechanism governing immobilization selectivity between cement related anion-exchange materials and anionic pollutants in cement matrix is still one of the main challenges for the treatment of hazardous wastes including radionuclides. The purpose of this research is to reveal the immobilization principle of various anionic species in cement and the related materials by combination of experimental observations with density functional theory (DFT) calculation.
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| 研究実績の概要 |
The selectivity of the anions to cementitious materials is initially investigated. The selectivity of various anions to hydrocalumite and ettringite is studied by a combination of experimental results and computational chemistry. The anions immobilized in hydrocalumite are mainly determined by the anionic radius and hydration abilities. However, the selectivity of anions to ettringite is generally controlled by the anions' hydration ability. The performance of anions to these hydroxides are evaluated for understanding the migration behavior and also applied for development of new immobilization materials. Based on these, we have summarized one work on this and will be published in international journals. Considering the Portland cement have some defects (low compatibility, longer setting time, etc.) on the immobilization of pollutants, I have collaborated with some international research institutes on developing novel immobilization materials based on selectivity research. We have applied this material to immobilize some industrial wastes. Based on the experiments, we found this material exhibits outstanding performance on the immobilization of pollutants. This material could be applied for the treatment of various pollutants.
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