| 双筒型微生物燃料电池生物阴极反硝化研究 |
| 摘要点击 1462 全文点击 1182 投稿时间：2009-10-10 修订日期：2009-12-14 |
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| 中文关键词 微生物燃料电池 双筒型 生物阴极 反硝化 |
| 英文关键词 microbial fuel cell two-columnar biocathod denitrification |
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| 中文摘要 |
| 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50 Ω下降到5 Ω，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5 Ω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. |
| 英文摘要 |
| 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 Ω to 5 Ω, the nitrate removal rate increased from 0.26 mg/(L·h) to 0.76 mg/(L·h). The nitrite accumulated to 55 mg/L with the external resistance decreasing to 5 Ω. 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. |
