School of Resources and Environmental Engineering, Jiangsu University of Technology, Changzhou, 213001, P. R. China.
Jiangsu Longheng Environmental Technology Co., LTD, Changzhou, 213000, P. R. China.
Sci Rep. 2024 Oct 6;14(1):23244. doi: 10.1038/s41598-024-74856-w.
Microbial fuel cells (MFCs) use the metabolic actions of microorganisms in an anode chamber to convert the chemical energy from wastewater into electrical energy. To improve the MFC power generation performance and chemical oxygen demand (COD) removal efficiency, Stenotrophomonas acidaminiphila was added to the anode chamber of a dual-compartment MFC. In this process, Stenotrophomonas acidaminiphila promotes the degradation of macromolecules such as bis(2-ethylhexyl) phthalate in food waste oil. Additionally, the generated electrical energy reduced Cu in the copper-containing wastewater in the cathode chamber to Cu monomers. The maximum power density of the MFC was 49.5 ± 3.5 mW/m, the maximum removal efficiencies of COD and Cu were 63.5 ± 5.8% and 96.5 ± 1.0%, respectively, and Cu was reduced to brick-red Cu monomers. This study provides insights into the simultaneous implementation of food waste oil treatment and metal resource recovery.
微生物燃料电池 (MFC) 利用阳极室内微生物的代谢作用将废水中的化学能转化为电能。为了提高 MFC 的发电性能和化学需氧量 (COD) 去除效率，将寡养单胞菌添加到双室 MFC 的阳极室中。在这个过程中，寡养单胞菌促进了在食品废油中的邻苯二甲酸二(2-乙基己基)酯等大分子的降解。此外，产生的电能将阴极室含铜废水中的 Cu 还原为 Cu 单体。MFC 的最大功率密度为 49.5±3.5 mW/m，COD 和 Cu 的最大去除效率分别为 63.5±5.8%和 96.5±1.0%，并且 Cu 被还原为砖红色的 Cu 单体。本研究为同时实现食品废油处理和金属资源回收提供了思路。
