College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China; Institute of Yellow River Delta Earth Surface Processes and Ecological Integrity, Shandong University of Science and Technology, Qingdao 266590, China.
College of Safety and Environmental Engineering, Shandong University of Science and Technology, Qingdao 266590, China; Institute of Yellow River Delta Earth Surface Processes and Ecological Integrity, Shandong University of Science and Technology, Qingdao 266590, China.
Sci Total Environ. 2024 Aug 15;938:173530. doi: 10.1016/j.scitotenv.2024.173530. Epub 2024 May 28.
Microbial fuel cells (MFCs), known for their low energy consumption, high efficiency, and environmental friendliness, have been widely utilized for removing antibiotics from wastewater. Compared to conventional wastewater treatment methods, MFCs produce less sludge while exhibiting superior antibiotic removal capacity, effectively reducing the spread of antibiotic resistance genes (ARGs). This study investigates 1) the mechanisms of ARGs generation and proliferation in MFCs; 2) the influencing factors on the fate and removal of antibiotics and ARGs; and 3) the fate and mitigation of ARGs in MFC and MFC-coupled systems. It is indicated that high removal efficiency of antibiotics and minimal amount of sludge production contribute the mitigation of ARGs in MFCs. Influencing factors, such as cathode potential, electrode materials, salinity, initial antibiotic concentration, and additional additives, can lead to the selection of tolerant microbial communities, thereby affecting the abundance of ARGs carried by various microbial hosts. Integrating MFCs with other wastewater treatment systems can synergistically enhance their performance, thereby improving the overall removal efficiency of ARGs. Moreover, challenges and future directions for mitigating the spread of ARGs using MFCs are suggested.
微生物燃料电池（MFC）以其能耗低、效率高、环境友好等特点，被广泛应用于从废水中去除抗生素。与传统的废水处理方法相比，MFC 产生的污泥较少，同时具有更好的抗生素去除能力，有效减少了抗生素耐药基因（ARGs）的传播。本研究探讨了 1）MFC 中 ARGs 的产生和增殖机制；2）影响抗生素和 ARGs 归宿和去除的因素；3）MFC 和 MFC 耦合系统中 ARGs 的归宿和缓解。结果表明，MFC 中抗生素的高去除效率和最小量的污泥产生有助于减少 ARGs。阴极电势、电极材料、盐度、初始抗生素浓度和外加添加剂等影响因素会导致耐受微生物群落的选择，从而影响各种微生物宿主携带的 ARGs 的丰度。将 MFC 与其他废水处理系统集成可以协同提高其性能，从而提高 ARGs 的整体去除效率。此外，还提出了利用 MFC 缓解 ARGs 传播的挑战和未来方向。
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