阴极室碳氮比对微生物燃料电池的影响  

Effect of C/N Ratio in Cathode Chamber on Microbial Fuel Cell

作　　者：张立成[1,2] 程亚楠[2] 于洋[2] 佟恩来 

机构地区：[1]沈阳建筑大学建筑设计研究院,辽宁沈阳110168 [2]沈阳建筑大学市政与环境工程学院,辽宁沈阳110168 [3]营口隆晟市政工程有限公司,辽宁营口115001

出　　处：《中国给水排水》2014年第23期98-100,共3页China Water & Wastewater

基　　金：辽宁省科学技术计划项目(2012229005);辽宁省百千万人才工程培养经费资助项目(2013921045)

摘　　要：以实际生活污水和硝酸盐溶液分别作为阳极和阴极处理对象构建微生物燃料电池(MFC),阴极室硝酸盐的反硝化会造成亚硝酸盐的积累,通过投加有机物抑制亚硝酸盐积累的同时,考察阴极碳氮比(C/N)值对MFC产电性能、阴极反硝化效果、阳极去除COD效果的影响。结果表明,阴极室投加有机物后,平均输出电压和最大功率密度分别由0.28 V和35.4 mW/m^3降为0.22V和28.3 mW/m^3,并且当阴极C/N=3时下降显著。从产电性能、碳源消耗量和反硝化进度等指标综合考虑,阴极C/N=2时MFC性能最佳。Actual domestic sewage and nitrate solution were respectively treated in anode and cathode of a microbial fuel cell （MFC）. Denitrification of nitrate in cathode chamber resulted in accumulation of nitrite, which could be restrained by adding organic matter. Effects of C/N ratio on electrogenesis, cathodic denitrification and COD removal, in anode of MFC were investigated by adding organic matter into the cathode chamber. After addition of organic matter, the average output voltage and maximum power density dropped from 0.28 V and 35.4 mW/m^3 to 0.22 V and 28.3 mW/m^3 respectively, and the decline Was especially obvious while C/N ratio was 3. The performance of MFC was the best while C/N ratio was 2 in cathode chamber if such indices as electrogenesis performance, consumption of carbon source and denitrification were taken into account synthetically.

关 键 词：微生物燃料电池 碳氮比 阴极反硝化 功率密度 

分 类 号：X703[环境科学与工程—环境工程] TM911.4[电气工程—电力电子与电力传动]