| 研究課題/領域番号 |
19K24378
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| 研究種目 |
研究活動スタート支援
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| 配分区分 | 基金 |
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| 審査区分 |
1101:環境解析評価、環境保全対策およびその関連分野
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| 研究機関 | 北海道大学 |
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研究代表者 |
JEON SANGHEE 北海道大学, 工学研究院, 特任助教 (20847701)
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| 研究期間 (年度) |
2019-08-30 – 2021-03-31
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| 研究課題ステータス |
完了 (2020年度)
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| 配分額 *注記 |
2,860千円 (直接経費: 2,200千円、間接経費: 660千円)
2020年度: 1,430千円 (直接経費: 1,100千円、間接経費: 330千円)
2019年度: 1,430千円 (直接経費: 1,100千円、間接経費: 330千円)
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| キーワード | Ammonium thiosulfate / Gold / Cementation / Aluminum / Activated carbon / Galvanic interaction / Recovery of gold ions / Adsorption / Zero-valent aluminum |
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| 研究開始時の研究の概要 |
With the acceleration of the ‘fourth industrial revolution’ and the high importance of ‘safety’ and ‘resources conservation’ perspectives, the ‘sustainable’ and ‘eco-friendly’ supply of ‘precious metals’ (i.e., gold) has become important in the resources engineering field. In line with the trend, this research project proposed ‘development of a novel recovery method for precious metals coupled with extraction using eco-friendly solvent from secondary resources (i.e., electronic wastes)’.
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| 研究成果の概要 |
The main achievement of this project is; successful recovery technique for gold ions from the eco-friendly solution, ammonium thiosulfate, with simple and high efficiency was newly developed to eliminate the challenges of poor recovery of the system.
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| 研究成果の学術的意義や社会的意義 |
Currently in metallurgy, the focus is on green mining with non-toxic solution, but the application of the system to industrial mining is elusive so far due to the limited recovery technique. In the project, a simple recovery technique was newly developed and >99% of Au ions can be recovered.
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