Abstract
The influence of silver ions (Ag+) on the bioleaching of cobalt from spent lithium batteries using Acidithiobacillus ferrooxidans (A. ferrooxidans) bacteria was investigated. The best effect was observed at Ag + concentration of 0.02 g/L, and the amount of leached cobalt was 98.4% in a period of 7 days, whereas in the absence of Ag+, the amount of leached cobalt was only 43.1%. Based on the results of SEM, XRD and EDX investigation, it is deduced that Ag+ first reacted with cobalt to form AgCoO2 as an intermediate. A mechanism that is based on catalytic interactions is proposed to explain the enhanced leaching of Co using A. ferrooxidans.
Original language | English |
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Pages (from-to) | 40-44 |
Number of pages | 5 |
Journal | Minerals Engineering |
Volume | 49 |
DOIs | |
Publication status | Published - Aug 2013 |
User-Defined Keywords
- Bioleaching
- Catalyst
- Silver
- Spent lithium batteries