Pathways of N removal and N2O emission from a one-stage autotrophic N removal process under anaerobic conditions

doi:10.1038/srep42072

CORC > 重庆绿色智能技术研究院 > 中国科学院重庆绿色智能技术研究院 > 水质生物转化研究中心

	Pathways of N removal and N2O emission from a one-stage autotrophic N removal process under anaerobic conditions
	Li, Kai 1; Fang, Fang 1; Wang, Han 1; Wang, Chao 1; Chen, Youpeng 2; Guo, Jinsong 2; Wang, Xixi 2; Jiang, Fuyang 1
刊名	SCIENTIFIC REPORTS
	2017-02-16
卷号	7 页码:10
ISSN号	2045-2322
DOI	10.1038/srep42072
通讯作者	Fang, F (reprint author), Chongqing Univ, Key Lab Gorges Reservoir Reg Ecoenvironm MOE 3, Chongqing 400045, Peoples R China.
英文摘要	To investigate the pathways of nitrogen (N) removal and N2O emission in a one-stage autotrophic N removal process during the non-aeration phase, biofilm from an intermittent aeration sequencing batch biofilm reactor (SBBR) and organic carbon-free synthetic wastewater were applied to two groups of lab-scale batch experiments in anaerobic conditions using a 15N isotopic tracer and specific inhibitors, respectively. Then, the microbial composition of the biofilm was analysed using highthroughput sequencing. The results of the N-15 isotopic experiments showed that anaerobic ammonium oxidation (Anammox) was the main pathway of N transformation under anaerobic conditions and was responsible for 83-92% of N-2 production within 24 h. Furthermore, experiments using specific inhibitors revealed that when nitrite was the main N source under anaerobic conditions, N2O emissions from heterotrophic denitrification (HD) and ammonia-oxidizing bacteria (AOB) denitrification were 64% and 36%, respectively. Finally, analysing the microbial composition demonstrated that Proteobacteria, Planctomycetes, and Nitrospirae were the dominant microbes, corresponding to 21%, 13%, and 7% of the microbial community, respectively, and were probably responsible for HD, Anammox, and AOB denitrification, respectively.
URL标识	查看原文
资助项目	Natural Science Foundation of China[51278509] ; Natural Science Foundation of China[51578527]
WOS研究方向	Science & Technology - Other Topics
语种	英语
出版者	NATURE PUBLISHING GROUP
WOS记录号	WOS:000394218400001
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/3398]
专题	水质生物转化研究中心
通讯作者	Fang, Fang
作者单位	1.Chongqing Univ, Key Lab Gorges Reservoir Reg Ecoenvironm MOE 3, Chongqing 400045, Peoples R China 2.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Key Lab Reservoir Aquat Environm, Chongqing 400714, Peoples R China
推荐引用方式 GB/T 7714	Li, Kai,Fang, Fang,Wang, Han,et al. Pathways of N removal and N2O emission from a one-stage autotrophic N removal process under anaerobic conditions[J]. SCIENTIFIC REPORTS,2017,7:10.
APA	Li, Kai.,Fang, Fang.,Wang, Han.,Wang, Chao.,Chen, Youpeng.,...&Jiang, Fuyang.(2017).Pathways of N removal and N2O emission from a one-stage autotrophic N removal process under anaerobic conditions.SCIENTIFIC REPORTS,7,10.
MLA	Li, Kai,et al."Pathways of N removal and N2O emission from a one-stage autotrophic N removal process under anaerobic conditions".SCIENTIFIC REPORTS 7(2017):10.