摘要
微生物燃料电池(MFC)是一种利用微生物的新陈代谢作用将化学能转化为电能的装置。实验以石墨为电极材料,乙酸钠模拟废水为阳极底物,以厌氧活性污泥为厌氧菌种,驯化后的好氧污泥为好氧菌种,构建了双室连续流生物阴极MFC反应器。研究了连续流生物阴极MFC在降解乙酸钠废水同时的产电性能。结果表明,在外电阻为50Ω的情况下,未加NaCl溶液时,连续流好氧生物阴极MFC的最大电流密度为0.29 mA/m2,加入NaCl溶液后,最大电流密度为0.75 mA/m2,是未添加NaCl溶液MFC的2.59倍,输出功率密度是未加NaCl溶液的6.84倍。阳极室出水进入阴极室,研究了连续流好氧生物阴极废水处理效果。结果表明,COD的去除率随MFC运行时间的增加呈上升趋势,MFC稳定运行后,COD的去除率维持在60.1%～66%。
Microbial fuel cell （MFC） is a device which converting chemical energy into electricity with the microbial metabolism. Graphito was used as electrode materials, acetic acid wastewater was used as substrate, anaerobic activated sludge was used as anaerobic bacterial source and domesticated aerobic sludge was used as aerobic bacteria. Continuous flow bio-cathode double chamber MFCs were constructed. The electricity production and the acetic acid wastewater treatment of the continuous flow bio-cathode MFC were studied. The results show that when external resistance was 50 Ω, the maximum currant density of the continuous flow aerobic bio-cathode MFC was 0.29 rnA/m2 When NaCl solution was added, the maximum current density was 0.75 mA/m2, which was 2.59 times that of MFC without addition of NaCl solution, and the output power density was 6.84 times that of MFC without addition of NaCl solution. Effluent of anode chamber was used directly as influent of the cathode chamber. The effect of wastewater treaffnent of continuous flow aerobic hie-cathode MFC was studied. The result shows that the trend of the removal rate of COD changing with the increase of the MFC running time was on the rise. When MFC operated steadily, the removal rate of COD maintained betWeen 60.1% and 66%.
出处
《水处理技术》
CAS
CSCD
北大核心
2014年第1期52-55,共4页
Technology of Water Treatment
基金
江苏省自然科学基金项目(BK20131133)
常州市国际科技合作项目(CZ20120016)
关键词
微生物燃料电池
连续流
生物阴极
污水处理
产电性能
microbial fuel cell （MFC）
continuous flow
biological cathode
wastewater treatment
production of electricity
