2020 Fiscal Year Final Research Report
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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| Keywords | Ammonium thiosulfate / Gold / Cementation / Aluminum / Activated carbon / Galvanic interaction / Recovery of gold ions |
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| Outline of Final Research Achievements |
The main achievements of this project are; (1) successful recovery technique with simple and high efficiency for gold ions from the eco-friendly ammonium thiosulfate solution was newly developed to eliminate the challenges of the limited industrial application by the poor recovery in the system, and (2) to widen the scope of the research, recovery of heavy metal ions from the waste/acid medium by the developed technique was also evaluated, not limited to only gold.
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| Free Research Field |
Hydrometallurgy
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| Academic Significance and Societal Importance of the Research Achievements |
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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