Journal
JOURNAL OF HAZARDOUS MATERIALS
Volume 262, Issue -, Pages 1-8Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jhazmat.2013.08.004
Keywords
Cobalt leaching; Copper catalysis; Microbial fuel cell; Acid utilization efficiency; Apparent activation energy
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Funding
- Natural Science Foundation of China [51178077, 21077017]
- Specialized Research Fund for the Doctoral Program of Higher Education SRFDP [20120041110026]
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Enhancement of both cobalt leaching from LiCoO2 and acid utilization efficiency (AUE) in microbial fuel cells (MFCs) was successfully achieved by the addition of Cu(II). A dosage of 10 mg/L Cu(II) improved both cobalt leaching up to 308% and AUE of 171% compared to the controls with no presence of Cu(II). The apparent activation energy of cobalt leaching catalyzed by Cu(II) in MFCs was only 11.8 kJ/mol. These results demonstrate cobalt leaching in MFCs using Cu(II) as a catalyst may be an effective strategy for cobalt recovery and recycle of spent Li-ion batteries, and the evidence of influence factors including solid/liquid ratio, temperature, and pH and solution conductivity can contribute to improving understanding of and optimizing cobalt leaching catalyzed by Cu(II) in MFCs. (C) 2013 Elsevier B.V. All rights reserved.
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