摘要

      微生物燃料电池（MFC）是同时处理污水和发电的有前途的设备。外部抗性 (Rext) 对 MFC 在抗生素废水处理和抗生素抗性基因 (ARG) 减少中的性能起着至关重要的影响。本研究以Rext和是否添加20mg/L磺胺甲恶唑(SMX)为变量，观察到Rext为1000Ω时MFCs的几种化学性质的性能最佳。添加SMX前后的功率密度分别为1220.5±24.5mW/m2和1186.2±9.2mW/m2；此外，SMX 在 48 小时内的降解率高达 87.52±1.97%。高通量测序结果表明，Rext 和 SMX 都会影响微生物群落以及门和属的相对丰度。同时，具有 1000 Ω Rext 的 MFC 生成的目标 ARG 较少。实验结果表明，1000 Ω 是 MFCs 处理抗生素废水最合适的 Rext。

       Microbial fuel cells (MFCs) are promising equipment for simultaneous treatment of sewage and power generation. External resistance (Rext) plays a crucial impact in the performance of MFCs in antibiotic wastewater treatment and antibiotic resistance genes (ARGs) reduction. In this study, Rext and whether to add 20 mg/L sulfamethoxazole (SMX) as variables, it was observed that the performance of several chemical properties of MFCs was optimal when Rext was 1000 Ω. The power density before and after addition of SMX was 1220.5 ± 24.5 mW/m2 and 1186.2 ± 9.2 mW/m2, respectively; Furthermore, the degradation rate of SMX was as high as 87.52 ± 1.97% within 48 h. High-throughput sequencing results showed that both Rext and SMX affected the microbial community and relative abundance of the phylum and genera. Meanwhile, the MFCs with 1000 Ω Rext generated less the targeted ARGs. Experimental results showed that 1000 Ω was the most suitable Rext for MFCs in the treatment of antibiotic wastewater.

https://www.sciencedirect.com/science/article/abs/pii/S0960852421006489