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（Rct）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..
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 （Rct） 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..
出处
《环境科学学报》
CAS
CSCD
北大核心
2014年第1期97-106,共10页
Acta Scientiae Circumstantiae
基金
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)~~
关键词
微生物燃料电池
接种源
刚果红
降解
产电
microbial fuel cell
inoculum
Congo red
degradation
bioelectricity generation
