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双筒型微生物燃料电池生物阴极反硝化研究
引用本文:梁鹏,张玲,黄霞,范明志,曹效鑫.双筒型微生物燃料电池生物阴极反硝化研究[J].环境科学,2010,31(8):1932-1936.
作者姓名:梁鹏  张玲  黄霞  范明志  曹效鑫
作者单位:梁鹏,黄霞,范明志,曹效鑫,LIANG Peng,HUANG Xia,FAN Min-zhi,CAO Xiao-xin(清华大学环境科学与工程系,环境模拟与污染控制国家重点实验室,北京,100084);张玲,ZHANG Ling(重庆工商大学环境与生物工程学院,重庆,400067) 
基金项目:科技部国际科技合作计划项目 
摘    要:利用双筒型微生物燃料电池生物阴极实现电反硝化脱氮,考察外电阻大小、进水硝酸盐和有机物浓度对产电和反硝化的影响.当外电阻从50Ω下降到5Ω,硝酸盐去除速率由0.26 mg/(L.h)上升到0.76 mg/(L.h);在外电阻为5Ω时,亚硝氮积累浓度达55 mg/L;硝酸盐起始浓度在20~120 mg/L时硝酸盐降解满足0级反应,硝酸盐浓度对MFC产电影响不显著;亚硝氮的积累浓度随硝酸盐起始浓度增加而增加,最高可达到35 mg/L;有机物的加入能提高阴极反硝化速度,避免亚硝酸盐积累,对MFC产电影响不大.

关 键 词:微生物燃料电池  双筒型  生物阴极  反硝化
收稿时间:2009/10/10 0:00:00
修稿时间:2009/12/14 0:00:00

Biocathode Denitrification in a Two-columnar Microbial Fuel Cell
LIANG Peng,ZHANG Ling,HUANG Xi,FAN Min-zhi and CAO Xiao-xin.Biocathode Denitrification in a Two-columnar Microbial Fuel Cell[J].Chinese Journal of Environmental Science,2010,31(8):1932-1936.
Authors:LIANG Peng  ZHANG Ling  HUANG Xi  FAN Min-zhi and CAO Xiao-xin
Institution:Environmental Simulation and Pollution Control State Key Joint Laboratory, Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China. liangpeng@tsinghua.edu.cn
Abstract:The biocathode of the two-columnar microbial fuel cell was used to denitrify. Factors influencing denitrification performance and power production were studied. When the external resistance decreased from 50 omega to 5 omega, the nitrate removal rate increased from 0.26 mg/(L x h) to 0.76 mg/(L x h). The nitrite accumulated to 55 mg/L with the external resistance decreasing to 5 omega. The nitrate degradation followed the zero order reaction model when the initial nitrate concentration was 20-120 mg/L. The power generation was not affected by the nitrate concentration distinctly. The nitrite concentration increased with the initial nitrate concentration. The nitrite removal could be enhanced by adding organic matter, without significant influence on the power generation.
Keywords:microbial fuel cell    two-columnar    biocathod    denitrification
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