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| Effects of microbial fuel cells on sulfamonomethoxine degradation |
| Received:November 16, 2019 |
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| KeyWord:microbial fuel cells;Shewanella putrefaciens;sulfamonomethoxine;biodegradation;electrical performance |
| Author Name | Affiliation | E-mail | | YANG Yu-rong | Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China | | | JIANG Jin | Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China | | | LIU Xiao-hong | Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China | | | SI You-bin | Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China | youbinsi@ahau.edu.cn |
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| Abstract: |
| Microbial fuel cells(MFCs)can exploit the metabolic activities of microorganisms to yield electricity from substrate oxidation; thus, they have attracted a huge amount of interest in areas from fundamental theory to environmental remediation. It is well documented that many factors impact the electrical performance of MFCs and its application in contaminant degradation, including electrode materials, microbial source, contaminant concentration, and humic acid. In this study, the potential utilization of MFCs for the degradation of sulfamonomethoxine(SMM)was investigated, along with electrical output. The results showed that for three anode materials tested, the degradation rate of SMM and the electrical performance of MFCs were in the following order:carbon felt > carbon paper > graphite rod. At the initial SMM concentration of 10 mg·L-1, the degradation rate of SMM by Shewanella putrefaciens in MFCs reached 58.92%, higher than 46.48% by Shewanella oneidensis MR-1, and the maximum output power of MFCs from S. putrefaciens was approximately 6.51 mW·m-2 higher than that from S. oneidensis MR-1. As the SMM concentration increased, the output voltage of MFCs and the SMM degradation rate decreased. With an increase in humic acid, the degradation efficiency of SMM and the electrical performance of MFCs were enhanced. The anode performance of MFCs affected the degradation of SMM. In conclusion, MFCs could degrade SMM as fuel to output electrical energy, thereby providing a method for the realization of efficient and low-consumption treatment of sulfonamide antibiotics in the environment. |
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