Simultaneous removal of organic carbon and nitrogen pollutants in the Yangtze estuarine sediment: The role of heterotrophic nitrifiers

ISL OpenIR > 青海盐湖研究所知识仓储

	Simultaneous removal of organic carbon and nitrogen pollutants in the Yangtze estuarine sediment: The role of heterotrophic nitrifiers
	Jin, Qiang 1; Lu, Jian 2; Wu, Jun3 ; Luo, Yongming 2
	2017-05-15
发表期刊	ESTUARINE COASTAL AND SHELF SCIENCE
卷号	191 页码:150-156
关键词	Sediment Estuary Nitrification Functional Redundancy
摘要	The Yangtze Estuary is one of the most eutrophic coastal areas in the world. The engagement of heterotrophic nitrification bacteria in the simultaneous removal of organic carbon and ammonium in the Yangtze estuarine sediment was investigated. The specific nitrification rate in the selective autotrophic nitrification inhibition treatment was about 25% of that in the control without autotrophic nitrification inhibition, suggesting that heterotrophic nitrification, in addition to autotrophic nitrification, was an important nitrification process in the sediment. The increase of heterotrophic nitrification can offset the decrease in autotrophic nitrification, which subsequently leads to the high tolerance of nitrification to the organic carbon. The number of heterotrophic nitrification bacteria was 7.1 x 10(7) MPN g(-1) in sediment collected from Site 1 while that of autotrophic nitrification bacteria was 4.2 x 10(8) MPN g(-1). The isolation of heterotrophic nitrification bacteria provides direct evidence of the engagement of heterotrophs in the nitrification of the Yangtze estuarine sediment. The results show that nitrification is catalyzed by both the autotrophs and the heterotrophs, indicating functional redundancy of nitrification in sediment. Since organic carbon usually coexists with ammonium, these findings indicate an alternative bioprocess for the simultaneous removal of organic carbon and ammonium in Yangtze estuarine sediment. (C) 2017 Elsevier Ltd. All rights reserved.
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.isl.ac.cn/handle/363002/6216
专题	青海盐湖研究所知识仓储盐湖地质与环境实验室
作者单位	1.Shanghai Jiao Tong Univ, Sch Environm Sci & Engn, Shanghai 200240, Peoples R China 2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Shandong, Peoples R China 3.Chinese Acad Sci, Qinghai Inst Salt Lakes, Xining 810008, Qinghai, Peoples R China
推荐引用方式 GB/T 7714	Jin, Qiang,Lu, Jian,Wu, Jun,et al. Simultaneous removal of organic carbon and nitrogen pollutants in the Yangtze estuarine sediment: The role of heterotrophic nitrifiers[J]. ESTUARINE COASTAL AND SHELF SCIENCE,2017,191:150-156.
APA	Jin, Qiang,Lu, Jian,Wu, Jun,&Luo, Yongming.(2017).Simultaneous removal of organic carbon and nitrogen pollutants in the Yangtze estuarine sediment: The role of heterotrophic nitrifiers.ESTUARINE COASTAL AND SHELF SCIENCE,191,150-156.
MLA	Jin, Qiang,et al."Simultaneous removal of organic carbon and nitrogen pollutants in the Yangtze estuarine sediment: The role of heterotrophic nitrifiers".ESTUARINE COASTAL AND SHELF SCIENCE 191(2017):150-156.