Distribution patterns of nitrogen micro-cycle functional genes and their quantitative coupling relationships with nitrogen transformation rates in a biotrickling filter

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	Distribution patterns of nitrogen micro-cycle functional genes and their quantitative coupling relationships with nitrogen transformation rates in a biotrickling filter
	Honglei Wang 1,2; Guodong Ji 2; Xueyuan Bai 3
刊名	Bioresource Technology
	2016
通讯作者邮箱	jiguodong@pku.edu.cn
期号	209 页码:100-107
关键词	Biofilter Distribution pattern Nitrification DNRA Quantitative relationship
通讯作者	G. Ji
英文摘要	The present study explored the distribution patterns of nitrogen micro-cycle genes and the underlying mechanisms responsible for nitrogen transformation at the molecular level (genes) in a biotrickling filter (biofilter). The biofilter achieved high removal efficiencies for ammonium (NH4 +-N) (80–94%), whereas nitrate accumulated at different levels under a progressive NH4 +-N load. Combined analyses revealed the anammox, nas, napA, narG, nirS, and nxrA genes were the dominant enriched genes in different treatment layers. The presence of simultaneous nitrification, ammonium oxidation (anammox), and dissimilatory nitrate reduction to ammonium (DNRA) were the primary factors accounted for the robust NH4 +-N treatment performance. The presence of DNRA, nitrification, and denitrification was determined to be a pivotal pathway that contributed to the nitrate accumulation in the biofilter. The enrichment of functional genes at different depth gradients and the multi-path coupled cooperation at the functional gene level are conducive to achieving complete nitrogen removal.
WOS记录号	WOS:000372833500013
内容类型	期刊论文
源URL	[http://ir.iswc.ac.cn/handle/361005/7787]
专题	水土保持研究所_水保所科研产出--SCI_2016--SCI
作者单位	1.Institute of Soil and Water Conservation, Northwest A&F University, Yangling 712100, Shaanxi, China 2.Key Laboratory of Water and Sediment Sciences, Ministry of Education, Department of Environmental Engineering, Peking University, Beijing 100871, China 3.State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, School of Environment, Northeast Normal University, Changchun 130117, China
推荐引用方式 GB/T 7714	Honglei Wang,Guodong Ji,Xueyuan Bai. Distribution patterns of nitrogen micro-cycle functional genes and their quantitative coupling relationships with nitrogen transformation rates in a biotrickling filter[J]. Bioresource Technology,2016(209):100-107.
APA	Honglei Wang,Guodong Ji,&Xueyuan Bai.(2016).Distribution patterns of nitrogen micro-cycle functional genes and their quantitative coupling relationships with nitrogen transformation rates in a biotrickling filter.Bioresource Technology(209),100-107.
MLA	Honglei Wang,et al."Distribution patterns of nitrogen micro-cycle functional genes and their quantitative coupling relationships with nitrogen transformation rates in a biotrickling filter".Bioresource Technology .209(2016):100-107.