复合生物阴极型微生物燃料电池处理废水及同步产电性能  

Performance of a Hybrid Biocathode Microbial Fuel Cell for Wastewater Treatment and Electricity Generation

作　　者：王琳[1] 李雪[1] 王丽[2] 

机构地区：[1]中国海洋大学环境科学与工程学院,山东青岛266000 [2]哈尔滨工业大学能源科学与工程学院,黑龙江哈尔滨150001

出　　处：《环境科学研究》2017年第7期1098-1104,共7页Research of Environmental Sciences

基　　金：国家留学基金管理委员会项目(201203070391)

摘　　要：为研究生物阴极在MFC(微生物燃料电池)中的应用,分别以粒径为2~4 mm的颗粒活性炭和粒径为2~4、4~8、8~12mm的颗粒石墨为阴极基质材料,构建升流复合生物阴极型单室MFC,研究阴极基质材料的种类和粒径对MFC的产电性能和净水效能的影响.结果表明:当阳极基质材料为2~4 mm粒径的颗粒活性炭时,燃料电池中利用玻璃纤维取代离子交换膜,阴极基质材料为选用4~8 mm粒径颗粒石墨的反应柱产电量最大,为534 m V(外电阻为1 000Ω),最大功率密度达到631.6 m W/m^3,库伦效率为3.82%;阴极的p H越低越有利于阴极的产电反应;不同阴极基质材料的MFC对CODCr去除率均在80%左右,TN、NH_4^+-N及TP的去除率最高可分别达到79%、93%和34%.研究显示,阴极基质材料的种类和粒径对MFC的产电性影响较大,但对其净水效能的影响不大.An up-flow single-chamber biocathode microbial fuel cell was applied to investigate the effect of cathode substrate material on power generation and wastewater treatment. Granular activated carbon( 2-4 mm) was used as the anode substrate material,and granular graphite( 2-4,4-8,8-12 mm) was used as the cathode substrate material. Glass fiber was used as separators between electrodes. When the granular graphite( 4-8 mm) was used as the cathode substrate,the electricity generated was up to a voltage of 534 m V and a power density of 631. 6 m W/m^3. The maximum coulombic efficiency was 3. 82%,and the external resistance was 1000 Ω. The high cathode hydrogen ion concentration could result in high cathode potential that was conducive to electricity production response in the cathode compartment. The removal efficiency of CODCrwas on average 80% of MFCs with different cathode substrate material. Besides,the maximum removal efficiencies of the total nitrogen,ammonia nitrogen and total phosphorus were 79%,93% and 34%,respectively. The results indicated that the material and particle size of cathode substrate had a great effect on electricity generation,but had little effect on the wastewater treatment.

关 键 词：微生物燃料电池 生物阴极 污水净化 产电 阴极基质材料 

分 类 号：X703.1[环境科学与工程—环境工程]