College of Environmental Science and Engineering, Nankai University, 38 Tongyan Road, Jinnan District, Tianjin 300350, China; Key Laboratory of Pollution Process and Environmental Criteria, Ministry of Education, China; Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, Tianjin 300350, China.
College of Environmental Science and Engineering, Nankai University, 38 Tongyan Road, Jinnan District, Tianjin 300350, China; Tianjin Engineering Center of Environmental Diagnosis and Contamination Remediation, Tianjin 300350, China.
Bioresour Technol. 2021 Sep;336:125308. doi: 10.1016/j.biortech.2021.125308. Epub 2021 May 21.
Microbial fuel cells (MFCs) are promising equipment for simultaneous treatment of sewage and power generation. External resistance (R) plays a crucial impact in the performance of MFCs in antibiotic wastewater treatment and antibiotic resistance genes (ARGs) reduction. In this study, R 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 R was 1000 Ω. The power density before and after addition of SMX was 1220.5 ± 24.5 mW/m and 1186.2 ± 9.2 mW/m, 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 R and SMX affected the microbial community and relative abundance of the phylum and genera. Meanwhile, the MFCs with 1000 Ω R generated less the targeted ARGs. Experimental results showed that 1000 Ω was the most suitable R for MFCs in the treatment of antibiotic wastewater.
微生物燃料电池（MFC）是一种很有前途的设备，可同时用于处理污水和发电。在外阻（R）在抗生素废水处理和抗生素抗性基因（ARGs）减少中对 MFC 的性能起着至关重要的影响。在这项研究中，以 R 和是否添加 20mg/L 磺胺甲恶唑（SMX）为变量，观察到当 R 为 1000Ω 时，MFC 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/m 和 1186.2±9.2mW/m；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，R 和 SMX 都影响了微生物群落和门和属的相对丰度。同时，具有 1000Ω R 的 MFC 产生的目标 ARGs 较少。实验结果表明，在处理抗生素废水时，1000Ω 是最适合 MFC 的 R 值。
