• 关键词：微生物燃料电池  玉米秸秆  纤维素降解菌  产电菌  协同作用

• 基金项目：国家自然科学基金(No.50638020)

• 冯玉杰
• 哈尔滨工业大学城市水资源与水环境国家重点实验室, 哈尔滨 150090

• 王鑫
• 哈尔滨工业大学城市水资源与水环境国家重点实验室, 哈尔滨 150090

• 王赫名
• 哈尔滨工业大学城市水资源与水环境国家重点实验室, 哈尔滨 150090

• 于艳玲
• 哈尔滨工业大学城市水资源与水环境国家重点实验室, 哈尔滨 150090

• 李冬梅
• 哈尔滨工业大学城市水资源与水环境国家重点实验室, 哈尔滨 150090

• 摘要：利用单室空气阴极微生物燃料电池(MFC)反应器,以玉米秸秆为底物,以本实验室筛选和保存的纤维素降解菌Chaetomium sp.和Bacillus sp.,以及纤维素降解混合菌PCS-S和H-C为秸秆降解的生物催化剂,探讨了以汽爆秸秆固体为底物进行微生物产电的可行性.结果表明,在MFC系统内,纤维素降解纯菌和混合菌均能使纤维素降解,但产生的电压很低(<90mV,1000Ω),升高温度(30～38.5℃)对电压输出无明显影响.单独以生活污水作为菌源不能直接降解秸秆产电.只有将H-C和生活污水(产电菌源)混合作为接种体,MFC才能获得较高的电压输出.此时得到的以汽爆秸秆固体作为底物时的最大功率密度为406mW.m^-2,仅比葡萄糖作为底物时所得到的最大功率密度510mW.m^-2低20%.

• Abstract：The possibility of direct electricity production from steam exploded corn stover residue was studied in single chamber air-cathode microbial fuel cells(MFCs)using two cellulose degrading bacteria(Chaetomium sp.,Bacillus sp.)and two cellulose degrading communities(PCS-S and H-C;stored in our laboratory)as biocatalysts.Both pure strains and mixed communities can decompose corn stover in MFCs,but little electricity(<90 mV,1000Ω)was generated during this process.Increasing the temperature from 30 to 38.5℃ did not increase voltage outputs.Using domestic wastewater solely as inoculum,electricity cannot be generated from degradation of corn stover.Maximum voltage was observed in the MFC using H-C co-operated with the exoelectrogenic bacteria.The maximum power density from steam exploded corn stover residue was 406 mW·m^-2,which was only 20% lower than the 510 mW·m^-2 obtained using glucose as a substrate.

• Key words：microbial fuel cell  corn stover  cellulose degradation bacteria  exoelectrogenic bacteria  synergy

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