摘要
为了研究驯化期外电路对微生物燃料电池(MFC)的影响,对比了驯化期外电路分别为短路、连接1kΩ电阻、连接5kΩ电阻和开路的MFC在驯化时间、产电性能、阳极微生物等方面的差异.结果表明:驯化期外电路开路连接时驯化时间长且产电性能差;驯化期连接电阻可缩短MFC驯化时间,外电路电阻阻值越高,阳极微生物的含量越高,但产电微生物的富集越差,阳极微生物的电化学活性越低;增加驯化期外电路电阻,MFC内阻和电动势均降低,驯化期外电路阻值对MFC最大输出功率密度和库仑效率的影响较小.
To investigate the effect of external circuits during acclimation period on a microbial fuel cell （MFC）, MFC reactors connected with a short-cut circuit, 1 kg resistance, 5 kg resistance and open circuit respectively during the acclimation period were operated and their acclimation time, elec- trical performance and anodic bacteria were compared. Results show that MFC connected with open circuit needs the longest time for acclimation and its electrical performance is the worst. The acclima- tion time could be cut down significantly by connecting with an external resistance. The higher the ex- ternal resistance is, the more the anodic bacteria are. However, the enrichment of electricigens is worse and the electrochemical activity of the anodie bacteria is poorer. Connected with a higher exter- nal resistance during the acclimation period, the internal resistance and the electromotive force of the MFC would be lower, and the maximum power density and the coulomb efficiency are affected mini- mally.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2013年第11期32-36,共5页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
中国博士后科学基金资助项目(2012M511262)
中央高校基本科研业务费专项资金资助项目(121035)
关键词
微生物燃料电池
驯化期
外电阻
阳极微生物
产电性能
microbial fuel cell （MFC）~ acclimated period~ external resistance~ anodic bacteria~ elec-trical performance
