Characterization of nitrous oxide emissions from a thermophilic denitrifying bacterium Chelatococcus daeguensis TAD1 in an aerated sequencing batch reactor

被引：7
|
作者：
Li, Han [1 ,2 ]
Pan, Menglan [1 ,2 ]
Zhou, Shaofeng [1 ,2 ]
Huang, Shaobin [1 ,2 ]
Zhang, Yongqing [1 ,2 ]
机构：
[1] S China Univ Technol, Coll Environm & Energy, Guangzhou 510006, Guangdong, Peoples R China
[2] Guangdong Prov Key Lab Atmospher Environm & Pollu, Guangzhou 510006, Guangdong, Peoples R China
来源：
BIOCHEMICAL ENGINEERING JOURNAL | 2016年 / 112卷
基金：
中国国家自然科学基金;
关键词：
N2O emissions; Thermophilic; Aerobic denitrification; C/N ratio; pH; AEROBIC DENITRIFICATION; WASTE-WATER; HETEROTROPHIC NITRIFICATION; REMOVAL CHARACTERISTICS; LOW-TEMPERATURE; SP NOV; N2O; PH; KINETICS; SYSTEMS;
D O I：
10.1016/j.bej.2016.04.033
中图分类号：
Q81 [生物工程学（生物技术）]; Q93 [微生物学];
学科分类号：
071005 ; 0836 ; 090102 ; 100705 ;
摘要：
This study was conducted to investigate the nitrogen removal efficiency and N2O emission characteristics of a novel thermophilic aerobic denitrifying bacterium, Chelatococcus daeguensis TAD1, under different C/N ratios and pH values in a batch reactor. Nitrogen removal efficiency and N2O emissions were dramatically influenced by C/N ratio and pH. Moreover, multifactor analysis of variance suggested that these two factors also had significant interaction effects on N2O emissions. The optimum C/N ratio was determined to be 8 (where pH was set to 7), at which a very high nitrogen removal efficiency (>99%) was achieved. Under these conditions, N2O emissions were only 34.43 mu g/L and the N2O emission factor was 0.046%, which could offer a promising new microbial resource for N removal and reduction of greenhouse gas emissions during wastewater treatment. (c) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：233 / 240
页数：8
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