2020 Fiscal Year Annual 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 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 / Adsorption / Zero-valent aluminum / Activated carbon / Recovery of gold ions / Galvanic interaction |
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| Outline of Annual Research Achievements |
The main goal of the project is to develop a practical gold ions recovery technique in ammonium thiosulfate, a green/eco-friendly mining solvent, via galvanic interactions between zero-valent aluminum (ZVAl) and activated carbon (AC) to eliminate the challenges of poor recovery of the system. The results will have important industrial implications of the eco-friendly solvent in the mineral processing/resource recycling field where precious metals are the main industry. At the end of this project, we are expecting to change the paradigm of the current gold- metallurgy. In FY2019, the possibility of the recovery technique (i.e., ZVAl-AC technique) of gold ions from the ammonium thiosulfate solution was investigated in the model solution system. The achievements were as follows: Accepted 1 paper at Q1 international journal and 4 presentations at international conferences.
The achievements in FY2021 were as follows:
a. Identification of the optimum recovery conditions, effects of coexisting metal ions on recovery technique, and mechanisms were studied via batch-type and electrochemical experiments: Submitted 2 papers at Q1 international Journals, and 1 presentation at an international conference with the best presentation award.
a. To widen the scope of the research field, evaluation of the removal of the toxic/hazardous metal ions from the acidic solutions by the ZVAl-AC technique was carried out: Accepted 2 papers at Q1 international journals and 2 presentations at internal conferences.
c. A review paper was published to a Q1 international journal.
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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.V. Tabelin, D. Alonozo, K. Yoo, M. Ito, N. Hiroyoshi
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Journal Title
Resources Conservation & Recycling
Volume: -
Pages: 105610
DOI
Peer Reviewed / Int'l Joint Research
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