Copper catalysis for enhancement of cobalt leaching and acid utilization efficiency in microbial fuel cells

- Species of Cu(II) improved cobalt leaching and acid utilization efficiencies in MFCs.
- A pH of 2.0 was more preferable than 3.0 for Cu(II)-catalyzed cobalt leaching in MFCs.
- A solid/liquid ratio of 100-200 mg/L was matched with a Cu(II) dosage of 10 mg/L.
- The estimated Ea for Cu(II)-catalyzed cobalt leaching in MFCs was 11.8 kJ/mol.