Denitrification of overlying water by microbial electrochemical snorkel

doi:10.1016/j.biortech.2015.08.127

CORC > 北京大学 > 环境科学与工程学院

	Denitrification of overlying water by microbial electrochemical snorkel
	Yang, Qinzheng ; Zhao, Huazhang ; Liang, HuiHui
刊名	BIORESOURCE TECHNOLOGY
	2015
关键词	Iron rod Microbial electrochemical snorkel Nitrate NITRATE REMOVAL AUTOTROPHIC DENITRIFICATION WASTE-WATER FUEL-CELLS GROUNDWATER PERFORMANCE WETLANDS DRIVEN
DOI	10.1016/j.biortech.2015.08.127
英文摘要	A novel microbial electrochemical snorkel (MES) bioreactor was constructed by inserting an iron rod into the sediment of a simulated natural water body for the first time. Its nitrate removal performance and mechanism were investigated. The DNA high-throughput sequencing analysis indicates that denitrifying bacteria were grown on the iron rod in the overlying solution. The XRD analysis on the oxides formed on the surface of the iron rod indicates that they are goethite and green rust. In the MES system, the green rust on the iron rod can concentrate nitrate and denitrifying bacteria, forming an anaerobic biocathode. The denitrifying bacteria can reduce the nitrate into nitrogen with the electrons moved from the sediment. The nitrate removal efficiency reached 98% in 16 days. This novel MES system showed excellent in-situ nitrate removal performance by moving and concentrating the electrons in sediment and the nitrate in overlying solution in an anaerobic microenvironment. (C) 2015 Elsevier Ltd. All rights reserved.; Major Program of the National Natural Science Foundation of China [91434132]; National Natural Science Foundation of China [31570118, 51378020, 21077001]; Shandong Provincial Natural Science Foundation, China [ZR2015CM029]; Program for New Century Excellent Talents in University of Ministry of Education of China [NCET-10-0208]; Collaborative Innovation Center for Regional Environmental Quality; SCI(E); PubMed; ARTICLE; zhaohuazhang@pku.edu.cn; 512-514; 197
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/415269]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Yang, Qinzheng,Zhao, Huazhang,Liang, HuiHui. Denitrification of overlying water by microbial electrochemical snorkel[J]. BIORESOURCE TECHNOLOGY,2015.
APA	Yang, Qinzheng,Zhao, Huazhang,&Liang, HuiHui.(2015).Denitrification of overlying water by microbial electrochemical snorkel.BIORESOURCE TECHNOLOGY.
MLA	Yang, Qinzheng,et al."Denitrification of overlying water by microbial electrochemical snorkel".BIORESOURCE TECHNOLOGY (2015).