Effect of ammonium on nitrous oxide emission during denitrification with different electron donors

被引：0
作者：
Guangxue Wu [1 ]
Xiaofeng Zhai [2 ]
Chengai Jiang [2 ]
Yuntao Guan [1 ]
机构：
[1] Key Laboratory of Microorganism Application and Risk Control of Shenzhen,Graduate School at Shenzhen,Tsinghua University
[2] Department of Environmental Engineering,South China Agricultural University
来源：
Journal of Environmental Sciences | 2013年 / 06期
关键词：
ammonium; denitrification; greenhouse gas; nitrous oxide; PHB;
D O I：
暂无
中图分类号：
X703 [废水的处理与利用];
学科分类号：
083002 ;
摘要：
Nitrous oxide(N2O) emission during denitrification is receiving intensive attention due to its high potential to cause greenhouse effects.In this study,denitrifiers were acclimated in sequencing batch reactors with methanol or acetate as the electron donor and nitrate as the electron acceptor.The effects of ammonium on N2O emission were examined in batch experiments with various electron donors.With the addition of ammonium,N2O emission increased under all the examined conditions compared to experiments without ammonium addition.With different electron donors,the highest ratio of N2O emission to the removed oxidized nitrogen was 0.70% for methanol,5.34% for acetate,and 34.79% for polyhydroxybutyrate.
引用
收藏
页码：1131 / 1138
页数：8
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