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 |
Completed (Fiscal Year 2020)
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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 | Ammonium thiosulfate / Gold / Cementation / Aluminum / Activated carbon / Galvanic interaction / Recovery of gold ions / Adsorption / Zero-valent aluminum |
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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 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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| 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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Report
(3 results)
Research Products
(13 results)
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[Journal Article] Copper and critical metals production from porphyry ores and E-wastes: A review of resource availability, processing/recycling challenges, socio-environmental aspects, and sustainability issues2021
Author(s)
C.B. Tabelin, I. Park, T. Phengsaart, S. Jeon, M. Villacorte-Tabelin, D. Alonzo, K. Yoo, M. Ito, N. Hiroyoshi
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Journal Title
Resources, Conservation & Recycling
Volume: -
Pages: 105610-105610
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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