摘要
采用独立驯化和在线驯化相结合的新颖方式,以碳毡、碳布和碳纸为阳极挂膜材料,考察驯化方式和阳极材料对无介体微生物燃料电池(MFC)产电性能和有机物去除效果的影响。结果表明,独立驯化期阳极材料特性对微生物挂膜的影响较大,扫描电镜结果表明挂膜效果最好的是碳毡,碳布次之,碳纸较差;在线驯化约10 h后,微生物催化剂的电化学活性显著升高,第2个周期电压达到峰值(碳毡、碳布、碳纸的峰电压分别为0.803、0.604和0.574 V),第3个周期MFC能长时间稳定运行,其中,碳毡MFC电压平台维持在0.78 V左右长达180 h;比较MFCs的产电能力优劣顺序为:碳毡(1 339.6 mW/m3)>碳纸(96.8 mW/m3)>碳布(80 mW/m3);COD去除率为:碳毡(89.5%)>碳纸(79%)>碳布(74.7%)。
A novel acclimation of independent and on-ine was developed to study the power generation performance of Microbial Fuel Cell（MFC）,using carbon felt,carbon cloth and carbon paper as anodic materials,respectively.The experimental results showed that the anodic characters such as the surface area,aperture distribution,surface roughness and surface electric potential had directly affected the biomass on anode in the period of independent acclimation.It was clear that the anodic materials were in turn carbon felt,carbon cloth and carbon paper for abundant biomass on it by SEM.After about 10 h in on-line acclimation,the electrocatalytic activity of bacteria catalyzer increased significantly.In the second cycle,the output voltages for MFCs reached the peak（carbon felt/0.803 V;carbon cloth/0.604 V;carbon paper/0.574 V）.In the third cycle,MFCs maintained a high stable running for long period,especially the carbon felt-biofilm,the maximal output voltage（0.78 V） of it could keep more than 180 h.Comparing with power density of MFCs,the priority was in turn the carbon felt（1 339.6 mW/m3）,carbon paper（96.8 mW/m3） and carbon cloth（80 mW/m3）.The efficiencies of COD removal were in turn carbon felt（89.5%）,carbon paper（79%） and carbon cloth（74.7%）.
出处
《四川大学学报（工程科学版）》
EI
CAS
CSCD
北大核心
2011年第1期201-207,共7页
Journal of Sichuan University (Engineering Science Edition)
基金
四川省科技厅应用基础研究资助项目(2008JY0042)
关键词
微生物燃料电池
驯化
生物膜
产电细菌
Microbial Fuel Cell（MFC）
acclimation
biofilm
electro-microorganism
