CMI scientists at Idaho National Laboratory conducted this research.
Processing parameters of bioleaching time, temperature and pulp density on Co recovery from lithium ion battery cathode powder were optimized. Optimal conditions were found for temperatures between 20-70°C and incubation times >18 hours. Increasing pulp density (solid mass : liquid mass) from 1.5% to 3% and 6% led to 35% and 65% reduction in leaching efficiency, respectively.
Significance and Impact:
The results provide guidance for starting conditions for future scale-up research
- Apply optimized conditions to simulated heap-leaching process
- Test mixed lithium ion battery waste materials