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

doi:10.1016/j.biortech.2016.02.119

ISWC OpenIR > 水保所科研产出--SCI > 2016--SCI

	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; G. Ji
文章类型	Article
	2016
发表期刊	Bioresource Technology
通讯作者邮箱	jiguodong@pku.edu.cn
期号	209 页码:100-107
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.
关键词	Biofilter Distribution Pattern Nitrification Dnra Quantitative Relationship
DOI	10.1016/j.biortech.2016.02.119
收录类别	SCI
WOS记录号	WOS:000372833500013
引用统计
文献类型	期刊论文
条目标识符	sbir.nwafu.edu.cn/handle/361005/7787
专题	水保所科研产出--SCI_2016--SCI
通讯作者	G. Ji
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,et al. 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,&G. Ji.(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.

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