Journal
BIORESOURCE TECHNOLOGY
Volume 348, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2022.126752
Keywords
Bioelectrochemical characteristics; Microbial fuel cells; Current intensity; Sulfamethoxazole; Antibiotic resistance genes
Funding
- National Natural Science Foundation of China [51978148, 52070101]
- Scientific Research Foundation of Graduate School of Southeast Uni-versity [YBPY1962]
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Bioelectrochemical characteristics play a critical role in antibiotics removal and ARGs control in microbial fuel cell (MFC). The current intensity has a stronger effect on the system than the anode potential. Appropriate regulation of bio-electrochemical characteristics is essential for improving electricity generation and controlling ARGs.
Antibiotics removal and ARGs control in microbial fuel cell (MFC) has received extensive attention. In particular, the critical role of bioelectrochemical characteristics deserves further study. Bioelectrochemical characteristics significantly affected sulfamethoxazole (SMX) removal and ARGs fate, in which the current intensity played a more critical role than anode potential. High-concentration SMX (2 mg/L and 10 mg/L) facilitated the anode potential tend to be close, and thus, the strengthening effect of current on the system was highlighted. However, the SMX degradation pathway under different bioelectrochemical characteristics was not affected. Furthermore, the higher current intensity was preferable to antibiotic removal, but unfavorable for ARGs control might be due to the oxidative stress on microorganisms. Low-concentration SMX (0.5 mg/L) contributed to improving higher electricity generation because of Geobacter enrichement. This study suggested that appropriate bio-electrochemical characteristics regulation in MFCs was essential in removing antibiotics and controlling ARGs.
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