微生物燃料电池处理苯酚废水运行条件研究  

Operating parameters for a microbial fuel cell in treating phenol-containing wastewater

作　　者：汪家权[1] 夏雪兰[1] 丁巍巍[1] 

机构地区：[1]合肥工业大学资源与环境工程学院,合肥230009

出　　处：《环境科学学报》2010年第4期735-741,共7页Acta Scientiae Circumstantiae

基　　金：国家自然科学基金(No.50379003);江苏省环境科学与工程重点实验室开放课题基金(No.060710E2)~~

摘　　要：以传统厌氧消化(conventional anaerobic digestion,CAD)作对照,研究不同温度、底物浓度、盐桥管径以及有无接种微生物对微生物燃料电池(microbial fuel cell,MFC)处理苯酚废水性能的影响.实验结果表明,MFC技术可以在获得电能的同时,强化有机废水的生物处理过程,MFC能够在较低温度(15℃)下运行.当苯酚初始浓度为0.15g·L-1,随着温度(15℃、25℃、35℃)的增加,苯酚的降解效率和MFC的产电性能也随着提高;MFC具有耐有机负荷冲击能力,即使在高负荷苯酚初始浓度3.5g·L-1条件下,去除率达60%;盐桥孔径并不与苯酚去除效率、电压、功率密度成正比关系.MFC在适合的管径条件下可以高效去除苯酚的同时,能有较高的产电效率;MFC的阳极反应需要微生物的催化.The operating parameters for a dual-chamber microbial fuel cell （MFC） in treating phenol-containing wastewater were investigated in comparison with conventional anaerobic digestion （CAD）. The parameters included temperature,substrate concentration,salt bridge dimensions （inner diameter,ID）,and presence and absence of microbial inoculation. The results indicate that the MFC could enhance the biodegradation of wastewater and generate electricity from the process. During this study,successful operation of the MFC was achieved at the low temperature of 15℃. At the initial phenol concentration of 0.15 g·L^-1,removal efficiency and power generation were both enhanced with increases of temperature （15℃,25℃,35℃）. The data indicate that the MFC could sustain high organic loads. For example,at an elevated phenol concentration of 3.5 g·L^-1,the system maintained a removal efficiency of 60%. The dimensions of the salt bridges did not show a linear relationship to the phenol removal efficiency,voltage or power density in the MFCs. But the observations show that an optimal range of ID for salt bridges could benefit phenol degradation and power generation in an MFC. Expectedly,catalysis by a proper microbial consortium at the MFC anode was also critical to this study.

关 键 词：微生物燃料电池 传统厌氧消化 苯酚 功率密度 

分 类 号：X703[环境科学与工程—环境工程]