基于底物类型的微生物燃料电池的产电特性

Power Generation of MFC Based on Substrate Types

DOI：

中文关键词: 沉积型微生物燃料电池 功率密度 底物类型 蓝藻

英文关键词: sediment microbial fuel cell power density substrate types cyanobacteria

基金项目:江苏省自然科学基金项目(BK2007022)

摘要点击次数: 187

全文下载次数: 677

中文摘要:

针对目前太湖流域大量蓝藻水需销纳的状况,研究开发了从蓝藻水中回收电能同时将其中的有机污染物质降解的沉积型微生物燃料电池(Sediment Microbial Fuel Cell,SMFC)体系。作者主要考察了不同底物类型对SMFC体系产电特性的影响。结果表明,底物类型对所构建SMFC体系的运行特性有较大影响。功率密度峰值依蓝藻+乙酸钠、蓝藻、蓝藻+葡萄糖和空白体系的顺序递减,分别为15.59、12.72、10.52、8.35 mW/m2。COD去除率则依蓝藻+乙酸钠、蓝藻+葡萄糖、蓝藻和空白体系的顺序递减,分别为60.1%、27.2%、19.6%、18.1%。功率密度和COD去除率变化规律的区别,主要归因于发酵型底物葡萄糖的存在导致体系中去除的COD并非全部被产电微生物所利用。

英文摘要:

The sediment microbial fuel cells(SMFC),which can simultaneously degrade organic pollutants and recover electric energy,are developed to treat cyanobacterial water,which can biologically degrade organic pollutants and recover electric energy.The effects of substrate types on power generation of SMFC were investigated in this study.The results showed that the performance of SMFC established was significantly influenced by substrate type.The power densities of cyanobacteria+sodium acetate,cyanobacteria,cyanobacteria +glucose and control system were 15.59,12.72,10.52 and 8.35 mW/m2,respectively,while the COD removal efficiency of those were 60.1%,27.2%,19.6% and 18.1%,respectively.The different variational law between the power densities and the COD removal efficiency could be attributed to the fact that the removed COD was not completely used to power generation by the electricigens in the SMFC system due to the existence of ferment substrate-glucose.

查看全文 查看/发表评论 下载PDF阅读器