悬浮颗粒对微生物燃料电池性能的影响  

Effect of suspended particles on performance of microbial fuel cell

作　　者：叶丁丁[1] 金璞[1] 李俊[1] 朱恂[1] 廖强[1] 

机构地区：[1]重庆大学低品位能源利用技术及系统教育部重点实验室,重庆大学工程热物理研究所,重庆400030

出　　处：《电源技术》2015年第5期931-933,共3页Chinese Journal of Power Sources

基　　金：国家自然科学基金(51176212,51376203);国家自然科学基金重点项目(51136007);教育部新世纪人才资助计划(NCET-11-0551);国家杰出青年科学基金项目(51325602)

摘　　要：微生物燃料电池(MFC)可在处理污水的同时获得电能,在污水处理中有着非常重要的应用前景。目前绝大部分MFC研究中均采用无悬浮颗粒的底物溶液进行培养和运行,并不符合污水处理的实际情况。通过在启动和运行过程中向培养基中添加SiO2颗粒,获得惰性悬浮颗粒对MFC性能的影响。实验结果表明:与采用无SiO2颗粒的培养基启动的MFC(功率密度为1770.0mW/m2)相比,采用1000mg/LSiO2颗粒浓度启动的MFC阳极电极上附着的活性生物量减少,生物膜电化学活性降低,从而使得MFC的功率密度降低至832.0mW/m2;启动完成后,将含SiO2悬浮颗粒的培养基改为无SiO2悬浮颗粒条件下运行150h后,MFC功率密度提高至985.0mW/m2,仅为无悬浮颗粒培养基启动MFC性能的55%。Microbial fuel cells （MFCs） has promising application prospect due to its capability of electricity generation and wastewater treatment. The substrate without suspended particles is used in most of the previous studies, but does not accord with the actual situation of wastewater treatment. The silicon dioxide （SiO2） particles were added into the substrate during the start-up and operation to investigate the effect of inertia suspended particles on MFC performance. The results show that compared with the MFC without SiO2 particles in the substrate during start-up period, the active biomass and the electrochemical activity of the anode of MFC with 1 000 mg/L SiO2 particles are lower, causing the power density to decrease from 1 770.0 to 832.0 mW/m^2. After start-up of the MFC with SiO2 particles in the substrate, the MFC was operated for 150 h using substrate without SiO2 particles, the power density is improved to 985.0 mW/m^2, 55% of the maximum power density of the MFC without SiO2 particles in the substrate during start-up period.

关 键 词：微生物燃料电池 悬浮颗粒 活性生物量 性能 

分 类 号：TM911.4[电气工程—电力电子与电力传动]