• 关键词：微生物燃料电池  接种源  刚果红  降解  产电

• 基金项目：国家自然科学基金（No. 20977032）；中国博士后科学基金（No. 20110490880，2012T50724）；中央高校基本科研项目业务经费（No. 2012ZM0071）

• 许倩
• 工业聚集区污染控制与生态修复教育部重点实验室, 华南理工大学环境与能源学院, 广州 510006

• 孙健
• 工业聚集区污染控制与生态修复教育部重点实验室, 华南理工大学环境与能源学院, 广州 510006

• 胡勇有
• 工业聚集区污染控制与生态修复教育部重点实验室, 华南理工大学环境与能源学院, 广州 510006

• 摘要：分别以印染废水污泥和生活污水污泥接种微生物燃料电池（MFC-I和MFC-M），以刚果红为模型染料，研究了接种源对MFC同步脱色偶氮染料和产电性能的影响.结果表明，接种源对MFC同步降解刚果红与产电性能影响显著.产电方面，MFC-I的启动电压高于MFC-M，但稳定运行后二者最大输出电压差别不大.稳定运行阶段，MFC-M最大功率密度达到29.09 mW·m^-2，比MFC-I高2.11倍；阳极极化阻抗（R_ct）为748.9 Ω，比MFC-I低38.0%.脱色方面，MFC-I对刚果红的脱色速率比MFC-M高14.4%~20.3%；但脱色产物一样，均为2-氨基—1，4-萘醌、2，2’-二氨基联苯、4，4’-二氨基联苯.经分离、纯化和鉴定，二者阳极均存在优势菌Pseudomonas sp.，但MFC-M阳极还存在优势菌Bacillus sp.，而MFC-I的阳极还存在优势菌Aquamicrobium sp..

• Abstract：To investigate the effect of inoculums on performance of microbial fuel cells (MFCs) for simultaneous Congo red (as a typical azo dye) decolorization and electricity generation, sludge from industrial (printing and dyeing) and municipal wastewater treatment plants were used to inoculate MFCs (named as MFC-I and MFC-M). The results indicated that inoculums had significant effect on performance of MFC for simultaneous Congo red decolorization and electricity generation. During setup period, the voltage output of MFC-I was higher than that of MFC-M. However, during stable operation period, there was insignificant difference in voltage output between MFC-M and MFC-I. In addition, during stable operation period, the MFC-M achieved the maximum power density of 29.09 mW·m^-2, which was 2.11-fold higher than that achieved by MFC-I. It was consistent with a low anodic polarization resistance (R_ct) of 748.9 Ω in MFC-M, which was 38.0% lower than that obtained in MFC-I. The decolorization rate of Congo red in MFC-I was 14.4%~20.3% higher than that in MFC-M, whereas the main breakdown products of Congo red in both MFCs were similar and were determined as 2-amino-1,4-naphthoquinone, 2,2'-diaminodiphenyl and benzidine. The predominant microorganisms isolated from anodic biofilm of MFC-M were identified to be Pseudomonas sp. and Bacillus sp., while those isolated from MFC-I were Pseudomonas sp. and Aquamicrobium sp..

• Key words：microbial fuel cell  inoculum  Congo red  degradation  bioelectricity generation

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