A deoxidizing packing material (DPM) with an encapsulated deoxidizing agent (DA) was developed to construct the packed anodes of a trickle-bed microbial fuel cell (TB-MFC) for treating waste gas. The encapsulated DA can consume O₂ in waste gas and increase the voltage output and power density (PD) of the constructed TB-MFC. The DPM effectively enables the circulating water in TB-MFC for maintaining a low level of dissolved oxygen for 80 h. The results revealed that when the concentration of isopropanol (IPA) in waste gas was 0.74 g/m³, the TB-MFC (DPM with DA) exhibited an IPA removal efficiency (RE) of up to 99.7%. When DPM with DA was used as the packing material of the TB-MFC (486.6 mW/m³), the PD was 2.54 times that obtained when using coke as the packing material (191.6 mW/m³). The next-generation sequencing results demonstrated that because the oxygen content of the MFC anode chamber decreased over time in the TB-MFC, the richness of anaerobic electrogens (Pseudoxanthomonas, Flavobacterium, and Ferruginibacter) in the packing materials was increased. These electrogens mainly attached to the DPM, and IPA-degraders appeared in the circulating water of the TB-MFC. This enabled the TB-MFC to simultaneously achieve a high voltage output and IPA RE.

开发了一种带有封装脱氧剂 (DA) 的脱氧填料 (DPM)，用于构建用于处理废气的滴流床微生物燃料电池 (TB-MFC) 的填料阳极。封装的DA可以消耗废气中的O _{2并增加所构建的TB-MFC的电压输出和功率密度（PD）。}DPM 有效地使 TB-MFC 中的循环水保持 80 小时的低溶解氧水平。结果表明，当废气中异丙醇（IPA）的浓度为0.74 g/m ³时，TB-MFC（DPM with DA）的IPA去除效率（RE）高达99.7%。当 DPM 与 DA 用作 TB-MFC 的包装材料时 (486.6 mW/m ³), PD 是使用焦炭作为填料时的 2.54 倍 (191.6 mW/m ³ )。下一代测序结果表明，由于TB-MFC中MFC阳极室的氧含量随着时间的推移而降低，包装材料中厌氧电原（假黄单胞菌、黄杆菌和铁黄杆菌）的丰富度增加。这些电原主要附着在 DPM 上，而 IPA 降解剂则出现在 TB-MFC 的循环水中。这使 TB-MFC 能够同时实现高压输出和 IPA RE。