|
Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Engineering / Faculty of Engineering >
Peer-reviewed Journal Articles, etc >
A Kinetic Study on Enhanced Cementation of Gold Ions by Galvanic Interactions between Aluminum (Al) as an Electron Donor and Activated Carbon (AC) as an Electron Mediator in Ammonium Thiosulfate System
| Title: | A Kinetic Study on Enhanced Cementation of Gold Ions by Galvanic Interactions between Aluminum (Al) as an Electron Donor and Activated Carbon (AC) as an Electron Mediator in Ammonium Thiosulfate System |
| Authors: | Jeon, Sanghee Browse this author →KAKEN DB | | Bright, Sharrydon Browse this author | | Park, Ilhwan Browse this author →KAKEN DB | | Kuze, Akuru Browse this author | | Ito, Mayumi Browse this author →KAKEN DB | | Hiroyoshi, Naoki Browse this author →KAKEN DB |
| Keywords: | gold | | cementation | | galvanic interaction | | aluminum | | activated carbon | | kinetics | | ammonium thiosulfate solution | | mass transfer |
| Issue Date: | Jan-2022 |
| Publisher: | MDPI |
| Journal Title: | Minerals |
| Volume: | 12 |
| Issue: | 1 |
| Start Page: | 91 |
| Publisher DOI: | 10.3390/min12010091 |
| Abstract: | The enhanced cementation technique by galvanic interaction of aluminum (Al; electron donor) and activated carbon (AC; electron mediator) to recover gold (Au) ions from the ammonium thiosulfate solution is a promising technique to eliminate the challenges of poor recovery in the system. This study presents the kinetics of Au ion cementation in an ammonium thiosulfate lixiviant as functions of initial Au concentration, size/amount of Al and AC, temperature, and shaking speed. The recovery results basically followed first order kinetics and showed that the cementation rate increased with a higher initial concentration of Au, smaller electron donor size, greater both electron donor and mediator quantity, decrease in temperature, and higher shaking speed in the system, while size of electron mediator did not significantly affect Au recovery. |
| Rights: | © 2022 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/). |
| Type: | article |
| URI: | http://hdl.handle.net/2115/85048 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
|
|
