Journal
BIORESOURCE TECHNOLOGY
Volume 211, Issue -, Pages 542-547Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2016.03.144
Keywords
Microbial fuel cells; Shewanella oneidensis; Heavy metal ions; Extracellular electron transfer; Bioelectrochemical systems; Biofilm
Funding
- National Natural Science Foundation of China (NSFC) [51578266, 21306069]
- Natural Science Foundation of Jiangsu Province [BK20130492]
- Specialized Research Fund for the Doctoral Program of Higher Education (Ministry of Education) [20133227120014]
Ask authors/readers for more resources
Although microbial fuel cells (MFCs) is considered as one of the most promising technology for renewable energy harvesting, low power output still accounts one of the bottlenecks and limits its further development. In this work, it is found that Cu2+ (0.1 mu g L-1-0.1 mg L-1) or Cd2+ (0.1 mu g L-1-1 mg L-1) significantly improve the electricity generation in MFCs. The maximum power output achieved with trace level of Cu2+ (similar to 6 nM) or Cd2+ (similar to 5 nM) is 1.3 times and 1.6 times higher than that of the control, respectively. Further analysis verifies that addition of Cu2+ or Cd-2+ effectively improves riboflavin production and bacteria attachment on the electrode, which enhances bacterial extracellular electron transfer (EET) in MFCs. These results unveil the mechanism for power output enhancement by Cu2+ or Cd2+ addition, and suggest that metal ion addition should be a promising strategy to enhance EET as well as power generation of MFCs. (C) 2016 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available