Enhanced cementation of gold ions via synergistic effect using activated carbon and zerovalent aluminum: A novel approach to recover gold ions from ammonium thiosulfate system
| Project/Area Number |
19K24378
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Multi-year Fund |
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| Review Section |
1101:Environmental analyses and evaluation, environmental conservation measure and related fields
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| Research Institution | Hokkaido University |
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Principal Investigator |
JEON SANGHEE 北海道大学, 工学研究院, 特任助教 (20847701)
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| Project Period (FY) |
2019-08-30 – 2021-03-31
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| Project Status |
Granted (Fiscal Year 2019)
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| Budget Amount *help |
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | Gold / Cementation / Ammonium thiosulfate / Aluminum / Activated carbon |
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| Outline of Research at the Start |
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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| Outline of Annual Research Achievements |
The main purpose of this research is to newly develop a practical and comprehensive recovery technique in recovering precious metals from pregnant thiosulfate solution, which is non-toxic and low corrosiveness in mineral processing and resources recycling fields. The results will have important industrial implication in mineral processing/resources recycling field where gold is the main industry, and the end of this research, we are expecting to not only develop a new comprehensive technique in gold metallurgy but also advance the understanding of recovery enhancement via this novel recovery technique, hence it is able to change the paradigm of the current precious metals-metallurgy.
The results in FY2019 was as follows:
a. Identification of the possibility of this novel recovery technique- published 1 paper at Q1 international journal with 1 international presentation
b. Identification of the optimum recovery conditions and mechanism(s) via batch-experiments and electrochemical experiments, respectively.-now submitting 1 paper at Q1 international journal with 1 international presentation
c. Evaluation of gold recovery from very dilute solutions (e.g., seawater) as well as the removal of toxic/hazardous elements from wastewater.-now submitting 1 paper at Q1 international journal with 1 international presentation
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| Current Status of Research Progress |
Current Status of Research Progress
1: Research has progressed more than it was originally planned.
Reason
The present project is progressing more smoothly than initially planned since preliminary experiments as well as theoretical mechanisms(s) were well established before applying the KAKENHI.
For that, now one paper was published in FY2019 at Q1 international journal, which identified the possibility of this novel recovery technique, and in FY2020, 2 more papers will be submitted in this year also at Q1 international journal: One is for identification of the optimum recovery conditions and mechanisms, and the other is for application in waste water treatment which is recovery of heavy metals from acid solutions.
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| Strategy for Future Research Activity |
In FY2019, the author was focused on the model experiments to identify the optimum recovery conditions as well as mechanism(s). In FY2020, the author tried to widen the scope of the field to apply in real mineral processing/resources recycling filed using gold ore as well as E-waste.
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Report
(1 results)
Research Products
(5 results)
