Abstract
The recovery of precious metals (Ag and Au) by electrodeposition-redox replacement (EDRR) method was studied in three different solutions: sulfate based Zn-Fe-Ag solution, chloride based Cu-Fe-Au solution and industrial multi-metal chloride solution. The common factor to these solutions is that the base metal (Zn or Cu) is present in g/L scale while the precious metal is present in ppm or lower level. The results showed that the presence of impurity Fe (in g/L scale) decreases the recovery efficiency of precious metals but at the same time, it may lead to selective dissolution of the base metal, resulting in the higher purity of the precious metal deposit. Moreover, a successful deposition of Au on carbon nanotube (CNT) films from industrial multi-metal solution was demonstrated.
| Original language | English |
|---|---|
| Pages (from-to) | 59-67 |
| Number of pages | 9 |
| Journal | ECS Transactions |
| Volume | 85 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2018 |
| MoE publication type | A4 Article in a conference publication |
| Event | 233rd ECS Meeting Symposium on Industrial Electrochemistry and Electrochemical Engineering General Session - - Seattle, United States Duration: 13 May 2018 → 17 May 2018 |