DOI: 10.1016/j.watres.2018.05.033
Scopus记录号: 2-s2.0-85048488691
论文题名: Synchronous microbial vanadium (V) reduction and denitrification in groundwater using hydrogen as the sole electron donor
作者: Jiang Y. ; Zhang B. ; He C. ; Shi J. ; Borthwick A.G.L. ; Huang X.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 141 起始页码: 289
结束页码: 296
语种: 英语
英文关键词: Bio-reduction
; Denitrification
; Hydrogen
; Nitrate
; Vanadium (V)
Scopus关键词: Aquifers
; Denitrification
; Genes
; Groundwater pollution
; Groundwater resources
; Hydrogen
; Hydrogeology
; Nitrates
; Nitrogen removal
; Organic carbon
; RNA
; Volatile fatty acids
; 16S rRNA gene sequencing
; Adverse environmental impacts
; Bio reductions
; Metagenomic analysis
; Microbial communities
; Near-neutral conditions
; Synergistic mechanism
; Volatile fatty acids (VFAs)
; Vanadium compounds
; ground water
; hydrogen
; nitrate
; nitrogen
; organic carbon
; RNA 16S
; vanadium
; volatile fatty acid
; ground water
; hydrogen
; nitric acid derivative
; vanadium
; bacterium
; bioreactor
; denitrification
; groundwater
; groundwater pollution
; hydrogen
; microbial activity
; microbial community
; nitrate
; pollutant removal
; reduction
; vanadium
; water treatment
; aquifer
; Article
; bacterium
; bioremediation
; Dechloromonas
; denitrification
; denitrifyer
; electron
; gene sequence
; Geobacter
; Hydrogenophaga
; metagenomics
; microbial community
; nonhuman
; oxidation
; priority journal
; bioreactor
; denitrification
; genetics
; metabolism
; microbiology
; oxidation reduction reaction
; water pollutant
; Dechloromonas
; Geobacter
; Hydrogenophaga
; Bacteria
; Bioreactors
; Denitrification
; Groundwater
; Hydrogen
; Nitrates
; Oxidation-Reduction
; RNA, Ribosomal, 16S
; Vanadium
; Water Pollutants, Chemical
英文摘要: Groundwater co-contaminated by vanadium (V) (V(V)) and nitrate requires efficient remediation to prevent adverse environmental impacts. However, little is known about simultaneous bio-reductions of V(V) and nitrate supported by gaseous electron donors in aquifers. This study is among the first to examine microbial V(V) reduction and denitrification with hydrogen as the sole electron donor. V(V) removal efficiency of 91.0 ± 3.2% was achieved in test bioreactors within 7 d, with synchronous, complete removal of nitrate. V(V) was reduced to V(IV), which precipitated naturally under near-neutral conditions, and nitrate tended to be converted to nitrogen, both of which processes helped to purify the groundwater. Volatile fatty acids (VFAs) were produced from hydrogen oxidation. High-throughput 16S rRNA gene sequencing and metagenomic analyses revealed the evolutionary behavior of microbial communities and functional genes. The genera Dechloromonas and Hydrogenophaga promoted bio-reductions of V(V) and nitrate directly coupled to hydrogen oxidation. Enriched Geobacter and denitrifiers also indicated synergistic mechanism, with VFAs acting as organic carbon sources for heterotrophically functional bacteria while reducing V(V) and nitrate. These findings are likely to be useful in revealing biogeochemical fates of V(V) and nitrate in aquifer and developing technology for removing them simultaneously from groundwater. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112659
Appears in Collections: 气候减缓与适应
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作者单位: School of Water Resources and Environment, MOE Key Laboratory of Groundwater Circulation and Environmental Evolution, China University of Geosciences (Beijing), Beijing, 100083, China; School of Engineering, The University of Edinburgh, The King's Buildings, Edinburgh, EH9 3JL, United Kingdom
Recommended Citation:
Jiang Y.,Zhang B.,He C.,et al. Synchronous microbial vanadium (V) reduction and denitrification in groundwater using hydrogen as the sole electron donor[J]. Water Research,2018-01-01,141