IHB OpenIR  > 藻类生物学及应用研究中心  > 期刊论文
Efficacy of zero nitrous oxide emitting aerobic denitrifying bacterium, Methylobacterium gregans DC-1 in nitrate removal with strong auto-aggregation property
Hong, Pei1,2; Shu, Yilin3,4; Wu, Xingqiang1,2; Wang, Chunbo1,2; Tian, Cuicui1,2; Wu, Hailong3,4; Donde, Oscar Omondi1,2; Xiao, Bangding1,2
2019-12-01
Source PublicationBIORESOURCE TECHNOLOGY
ISSN0960-8524
Volume293Issue:1Pages:8
Abstract

A novel aerobic denitrifying strain Methylobacterium gregans DC-1 was isolated and identified. Strain DC-1 removed 98.4% of nitrate-nitrogen (NO3--N) and 80.7% of total organic carbon with initial concentrations of 50 and 2400 mg/1, respectively. The N balance showed that most NO3--N was converted to N-2(62.18%) without nitrous oxide (N2O) emission. Response surface analysis showed that the optimal conditions for total N removal were carbon (C):N ratio of 18.7, temperature of 26.8 degrees C, pH of 6.5 and shaking speed of 180 rpm. In combination with the N balance and successful amplification of napA, nirK and nosZ genes, the metabolic pathway was as follows: NO3-NO2- -> NO -> N-2(O) -> N-2. Strain DC-1 had strong auto-aggregation rate (maximum 38.7%), produced large amounts of extracellular polymeric substances (EPS; maximum of 781.4 mg/g cell dry weight) and had corresponding strong hydrophobicity (maximum 83.2%). Pearson correlation analysis showed that EPS content and hydrophobicity were significantly positively correlated with auto-aggregation.

KeywordAerobic denitrification Zero N2O Auto-aggregation EPS Hydrophobicity
DOI10.1016/j.biortech.2019.122083
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[31800112] ; National Natural Science Foundation of China[31800390] ; National Natural Science Foundation of China[31870450] ; National Natural Science Foundation of China[31670465]
WOS Research AreaAgriculture ; Biotechnology & Applied Microbiology ; Energy & Fuels
WOS SubjectAgricultural Engineering ; Biotechnology & Applied Microbiology ; Energy & Fuels
WOS IDWOS:000487836600019
WOS KeywordEXTRACELLULAR POLYMERIC SUBSTANCES ; HETEROTROPHIC NITRIFICATION ; WASTE-WATER ; DENITRIFICATION ; STRAIN ; SLUDGE ; BIOAUGMENTATION ; EFFICIENCY ; BIOFILM ; BIOREMEDIATION
PublisherELSEVIER SCI LTD
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/33484
Collection藻类生物学及应用研究中心_期刊论文
Corresponding AuthorXiao, Bangding
Affiliation1.Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Hubei, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Key Lab Conservat & Utilizat Important Biol Resou, Wuhu 241000, Peoples R China
4.Anhui Normal Univ, Coll Life Sci, Wuhu 241000, Peoples R China
Recommended Citation
GB/T 7714
Hong, Pei,Shu, Yilin,Wu, Xingqiang,et al. Efficacy of zero nitrous oxide emitting aerobic denitrifying bacterium, Methylobacterium gregans DC-1 in nitrate removal with strong auto-aggregation property[J]. BIORESOURCE TECHNOLOGY,2019,293(1):8.
APA Hong, Pei.,Shu, Yilin.,Wu, Xingqiang.,Wang, Chunbo.,Tian, Cuicui.,...&Xiao, Bangding.(2019).Efficacy of zero nitrous oxide emitting aerobic denitrifying bacterium, Methylobacterium gregans DC-1 in nitrate removal with strong auto-aggregation property.BIORESOURCE TECHNOLOGY,293(1),8.
MLA Hong, Pei,et al."Efficacy of zero nitrous oxide emitting aerobic denitrifying bacterium, Methylobacterium gregans DC-1 in nitrate removal with strong auto-aggregation property".BIORESOURCE TECHNOLOGY 293.1(2019):8.
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