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Simultaneous removal of organic carbon and nitrogen pollutants in the Yangtze estuarine sediment: The role of heterotrophic nitrifiers
Jin, Qiang1; Lu, Jian2; Wu, Jun3; Luo, Yongming2
2017-05-15
发表期刊ESTUARINE COASTAL AND SHELF SCIENCE
卷号191页码:150-156
文章类型Article
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.
关键词Sediment Estuary Nitrification Functional Redundancy
WOS标题词Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
关键词[WOS]NITRIFICATION-AEROBIC DENITRIFICATION ; NITRIFYING BACTERIA ; OXIDIZING BACTERIA ; FOREST SOIL ; AMMONIUM ; PATTERNS ; NITRATE
收录类别SCI
语种英语
WOS研究方向Marine & Freshwater Biology ; Oceanography
WOS类目Marine & Freshwater Biology ; Oceanography
WOS记录号WOS:000402494100015
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
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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.
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