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Bacterial community and nitrate removal by simultaneous heterotrophic and autotrophic denitrification in a bioelectrochemically-assisted constructed wetland
Xu, Dan1,2; Xiao, Enrong2; Xu, Peng2,3; Lin, Lili1,2; Zhou, Qiaohong2; Xu, Dong2; Wu, Zhenbin2
2017-12-01
Source PublicationBIORESOURCE TECHNOLOGY
ISSN0960-8524
Volume245Pages:993-999
AbstractTo enhance nitrate removal in constructed wetlands (CWs), a bioelectrochemically-assisted CW (BECW) integrating a three-dimensional biofilm-electrode reactor (3D-BER) into the CW was evaluated for the effectiveness of combined autotrophic and heterotrophic denitrification in the presence of organic matter and applied current. The effects of COD/N ratios on nitrate removal were investigated, and the bacterial communities in the granular active carbon (GAC) and graphite felt (GF) in the reactor's cathode region were compared. The highest NO3--N and TN removal efficiencies of 91.3 +/- 7.2% and 68.8 +/- 7.9% were obtained at the COD/N ratio of 5. According to the results of high-throughput sequencing analysis, sample GAC was enriched with a high abundance of Pseudomonas (17.29%) capable of autotrophic and heterotrophic denitrification, whereas autotrophic bacteria Thiobacillus (43.94%) was predominant in sample GF. The synergy between heterotrophic and autotrophic denitrification bacteria is believed to cause the high and stable nitrogen removal performance.
SubtypeArticle
KeywordConstructed Wetland Heterotrophic Denitrification Autotrophic Denitrification Bioelectrochemical Bacteria Community
DOI10.1016/j.biortech.2017.09.045
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine ; Technology
Indexed BySCI
Funding OrganizationNational Natural Science Foundation of China(51308530) ; National Natural Science Foundation of China(51308530) ; National Key Research and Development Plan of China(2016YFC0500403-03) ; National Key Research and Development Plan of China(2016YFC0500403-03) ; Chinese Academy of Sciences(KFZD-SW-30202) ; Chinese Academy of Sciences(KFZD-SW-30202) ; National Natural Science Foundation of China(51308530) ; National Natural Science Foundation of China(51308530) ; National Key Research and Development Plan of China(2016YFC0500403-03) ; National Key Research and Development Plan of China(2016YFC0500403-03) ; Chinese Academy of Sciences(KFZD-SW-30202) ; Chinese Academy of Sciences(KFZD-SW-30202)
Language英语
WOS Research AreaAgriculture ; Biotechnology & Applied Microbiology ; Energy & Fuels
WOS SubjectAgricultural Engineering ; Biotechnology & Applied Microbiology ; Energy & Fuels
WOS KeywordNITROGEN REMOVAL ; WASTE-WATER ; CARBON SOURCE ; C/N RATIO ; THIOBACILLUS-DENITRIFICANS ; BIOFILM-ELECTRODE ; REACTOR ; FLOW ; SYSTEM ; PERFORMANCE
WOS IDWOS:000412443500122
Funding OrganizationNational Natural Science Foundation of China(51308530) ; National Natural Science Foundation of China(51308530) ; National Key Research and Development Plan of China(2016YFC0500403-03) ; National Key Research and Development Plan of China(2016YFC0500403-03) ; Chinese Academy of Sciences(KFZD-SW-30202) ; Chinese Academy of Sciences(KFZD-SW-30202) ; National Natural Science Foundation of China(51308530) ; National Natural Science Foundation of China(51308530) ; National Key Research and Development Plan of China(2016YFC0500403-03) ; National Key Research and Development Plan of China(2016YFC0500403-03) ; Chinese Academy of Sciences(KFZD-SW-30202) ; Chinese Academy of Sciences(KFZD-SW-30202)
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Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/35725
Collection水环境工程研究中心
Affiliation1.Wuhan Univ Technol, Coll Resources & Environm Engn, Wuhan 430070, Hubei, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
Xu, Dan,Xiao, Enrong,Xu, Peng,et al. Bacterial community and nitrate removal by simultaneous heterotrophic and autotrophic denitrification in a bioelectrochemically-assisted constructed wetland[J]. BIORESOURCE TECHNOLOGY,2017,245:993-999.
APA Xu, Dan.,Xiao, Enrong.,Xu, Peng.,Lin, Lili.,Zhou, Qiaohong.,...&Wu, Zhenbin.(2017).Bacterial community and nitrate removal by simultaneous heterotrophic and autotrophic denitrification in a bioelectrochemically-assisted constructed wetland.BIORESOURCE TECHNOLOGY,245,993-999.
MLA Xu, Dan,et al."Bacterial community and nitrate removal by simultaneous heterotrophic and autotrophic denitrification in a bioelectrochemically-assisted constructed wetland".BIORESOURCE TECHNOLOGY 245(2017):993-999.
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