Copper catalysis for enhancement of cobalt leaching and acid utilization efficiency in microbial fuel cells
Release Time:2019-03-09 Hits:
Indexed by: Journal Article
Date of Publication: 2013-11-15
Journal: JOURNAL OF HAZARDOUS MATERIALS
Included Journals: Scopus、PubMed、EI、SCIE
Volume: 262
Page Number: 1-8
ISSN: 0304-3894
Key Words: Cobalt leaching; Copper catalysis; Microbial fuel cell; Acid utilization efficiency; Apparent activation energy
Abstract: 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.