Enhancement of facultative anaerobic denitrifying communities by oxygen release from roots of the macrophyte in constructed wetlands

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 中国科学院环境生物技术重点实验室

	Enhancement of facultative anaerobic denitrifying communities by oxygen release from roots of the macrophyte in constructed wetlands
	Sun, Haishu ; Xu, Shengjun ; Wu, Shanghua ; Wang, Rui ; Zhuang, Guoqiang ; Bai, Zhihui ; Deng, Ye ; Zhuang, Xuliang
刊名	JOURNAL OF ENVIRONMENTAL MANAGEMENT
	2019-09-15
卷号	246 页码:157-163
关键词	Constructed wetland Nitrogen removal Root oxygen release Facultative anaerobic niches Denitrifying communities
ISSN号	0301-4797
英文摘要	The radial oxygen loss (ROL) of wetland plants is a crucial factor that can influence the efficiency required for nitrogen (N) removal and microbial activities responsible for N removal in constructed wetlands (CWs). However, the shift of microbial community in different niches in response to ROL has been rarely studied. This study aims to unravel the link between the ROL and microbial response in sediment, water and rhizoplane by a surface flow CW planted with Myriophyllum aquaticum for treating high-strength swine wastewater. Ti3+-citrate colorimetric method demonstrated that M. aquaticum was a wetland species with a ROL of 0.019 mg/h/plant. Using quantitative polymerase chain reactions (qPCR) and high-throughput sequencing of microbial 16S rRNA gene, we demonstrated that the abundance of facultative anaerobic denitrifiers in the rhizoplane was the most of the three niches, that in the water (5-10 cm) was the less and that in the sediment was the least. Acinetobacter was enriched and dominated amongst denitrifiers in the water. Denitrifiers in the rhizoplane were mainly dominated by enriched Pseudomonas, Aeromonas, and Acinetobacter. The theoretical calculation of oxygen sources and consumptions indicated that water reaeration should support the oxygen demands for nitrification in the aerobic layer (0-5 cm), and the ROL could stimulate the growth of facultative anaerobic denitrifiers in the rhizoplane and water (5-10 cm) to achieve denitrification within CW systems.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/43367]
专题	生态环境研究中心_中国科学院环境生物技术重点实验室
作者单位	1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Environm Biotechnol, Beijing 100085, Peoples R China 2.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Sun, Haishu,Xu, Shengjun,Wu, Shanghua,et al. Enhancement of facultative anaerobic denitrifying communities by oxygen release from roots of the macrophyte in constructed wetlands[J]. JOURNAL OF ENVIRONMENTAL MANAGEMENT,2019,246:157-163.
APA	Sun, Haishu.,Xu, Shengjun.,Wu, Shanghua.,Wang, Rui.,Zhuang, Guoqiang.,...&Zhuang, Xuliang.(2019).Enhancement of facultative anaerobic denitrifying communities by oxygen release from roots of the macrophyte in constructed wetlands.JOURNAL OF ENVIRONMENTAL MANAGEMENT,246,157-163.
MLA	Sun, Haishu,et al."Enhancement of facultative anaerobic denitrifying communities by oxygen release from roots of the macrophyte in constructed wetlands".JOURNAL OF ENVIRONMENTAL MANAGEMENT 246(2019):157-163.