Quantitative responses of nitrous oxide accumulation to genetic   associations across a temperature gradient within denitrification   biofilters

doi:10.1016/j.ecoleng.2017.02.008

CORC > 北京大学 > 环境科学与工程学院

	Quantitative responses of nitrous oxide accumulation to genetic associations across a temperature gradient within denitrification biofilters
	Zhang, Yan ; Ji, Guodong ; Wang, Rongjing
刊名	ECOLOGICAL ENGINEERING
	2017
关键词	Nitrous oxide Denitrification biofilter Molecular mechanism Genetic association Temperature DISSIMILATORY NITRATE REDUCTION FLOW CONSTRUCTED WETLANDS LOADING RATE CONSTRAINTS WASTE-WATER NITRIC-OXIDE REMOVAL AMMONIUM N2O NITRIFICATION BIOFILTRATION
DOI	10.1016/j.ecoleng.2017.02.008
英文摘要	Increased nitrous oxide (N2O) in the atmosphere is of global concern. Biofiltration has been studied for gaseous nitrogen treatments in drinking water environments; however, the molecular mechanisms mediating N2O accumulation in denitrification biofilters have not been quantified. Five denitrification biofilters were developed in this study and all achieved high removal efficiencies for total nitrogen (TN: 72.4-92.7%), nitrate nitrogen (NO3--N: 88.6-98.2%) and chemical oxygen demand (COD: 79.3-90.0%) across a low -temperature gradient (5-25 degrees C). Denitrification coupling with anaerobic ammonium oxidation (ANAMMOX) and dissimilatory nitrate reduction to ammonium (DNRA) processes yielded the presently robust treatment performance. Nitrite availability limited TN removal at 5-15 degrees C. Our findings indicate that temperature affected N2O accumulation indirectly by controlling the balance of nitrite versus N2O reductase carrying microorganisms. In addition, our results demonstrated that genetic association was an important index reflecting the relative intensity of N2O accumulation at low temperatures. (C) 2017 Elsevier B.V. All rights reserved.; Key Project of China Spark Program [GL2015007]; Collaborative Innovation Center for Regional Environmental Quality; SCI(E); ARTICLE; 145-151; 102
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/473727]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Zhang, Yan,Ji, Guodong,Wang, Rongjing. Quantitative responses of nitrous oxide accumulation to genetic associations across a temperature gradient within denitrification biofilters[J]. ECOLOGICAL ENGINEERING,2017.
APA	Zhang, Yan,Ji, Guodong,&Wang, Rongjing.(2017).Quantitative responses of nitrous oxide accumulation to genetic associations across a temperature gradient within denitrification biofilters.ECOLOGICAL ENGINEERING.
MLA	Zhang, Yan,et al."Quantitative responses of nitrous oxide accumulation to genetic associations across a temperature gradient within denitrification biofilters".ECOLOGICAL ENGINEERING (2017).