DOI: 10.1016/j.watres.2018.01.022
Scopus记录号: 2-s2.0-85041411625
论文题名: Elucidating the stimulatory and inhibitory effects of dissolved sulfide on sulfur-oxidizing bacteria (SOB) driven autotrophic denitrification
作者: Lu H. ; Huang H. ; Yang W. ; Mackey H.R. ; Khanal S.K. ; Wu D. ; Chen G.-H.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 133 起始页码: 165
结束页码: 172
语种: 英语
英文关键词: Autotrophic denitrification
; Biological sulfide oxidation
; Dissolved sulfide
; Sulfur-oxidizing bacteria (SOB)
Scopus关键词: Bacteria
; Denitrification
; Dissolution
; Nitrates
; Nitrogen removal
; Odor control
; Odor removal
; Oxidation
; Sulfur
; Autotrophic denitrification
; Biological sulfide oxidation
; Denitrification rate
; Dissolved sulfide
; Engineering implications
; Rate-limiting steps
; Sulfide concentration
; Sulfur oxidizing bacteria
; Sulfur compounds
; nitrate reductase
; sulfide
; nitric acid derivative
; nitrite
; sulfide
; sulfur
; bacterium
; concentration (composition)
; corrosion control
; denitrification
; enzyme
; enzyme activity
; inhibition
; inhibitor
; microbial activity
; oxidation
; pollutant removal
; reduction
; sulfide
; activated sludge
; Article
; autotrophy
; bacterial cell
; cell viability
; denitrification
; flow cytometry
; gas exchange
; microbial metabolism
; microbial viability
; nonhuman
; pH
; priority journal
; pyrosequencing
; room temperature
; sludge
; sulfur oxidizing bacterium
; suspended particulate matter
; autotrophy
; bacterium
; metabolism
; microbiology
; oxidation reduction reaction
; sewage
; Autotrophic Processes
; Bacteria
; Denitrification
; Nitrates
; Nitrites
; Oxidation-Reduction
; Sewage
; Sulfides
; Sulfur
英文摘要: Autotrophic denitrification has been widely studied for odor mitigation, corrosion control and nitrogen removal in recent years. This paper examines the response of sulfur-oxidizing bacteria (SOB) driven autotrophic denitrification under short-term stress of dissolved sulfide. A series of batch tests were conducted to investigate the effect of different sulfide concentrations (0–1600 mg-total dissolved sulfide (TDS)/L) on autotrophic denitrification and sulfide oxidation by SOB-enriched sludge. Our results show that autotrophic denitrification (NO3 − to N2) was stimulated up to 200 mg-TDS/L with a maximum denitrification rate of 9.4 mg-N/g-volatile suspended solids (VSS)/h, and the nitrite reduction was a rate limiting step. When sulfide concentration was higher than 200 mg-TDS/L, it inhibited nitrate reductase, and nitrate reduction became the rate limiting step according to Edwards and Aiba inhibition models. Sulfide oxidation, however, was not inhibited and the maximum rate of 100.3 mg-TDS/g-VSS/h was obtained at sulfide concentration of 1000 mg-TDS/L. It is important to point out that the transient inhibition on autotrophic denitrification caused by high sulfide stress was resilient and non-lethal with no significant changes in cell viability even under sulfide concentration of 1000 mg-TDS/L. This study reveals the stimulatory and inhibitory effects of dissolved sulfide on SOB driven autotrophic denitrification and its possible underlying mechanism with discussion on engineering implications. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112955
Appears in Collections: 气候减缓与适应
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作者单位: School of Environmental Science and Engineering, Sun Yat-sen University, Guangzhou, China; Guangdong Provincial Key Laboratory of Environmental Pollution Control and Remediation Technology, Guangzhou, China; College of Science and Engineering, Hamad Bin Khalifa University, Education City, Doha, Qatar; Department of Molecular Biosciences and Bioengineering, University of Hawaii at Manoa, United States; Department of Civil and Environmental Engineering, Chinese National Engineering Research Center for Control & Treatment of Heavy Metal (Hong Kong Branch), Water Technology Center, The Hong Kong University of Science and Technology, Hong Kong
Recommended Citation:
Lu H.,Huang H.,Yang W.,et al. Elucidating the stimulatory and inhibitory effects of dissolved sulfide on sulfur-oxidizing bacteria (SOB) driven autotrophic denitrification[J]. Water Research,2018-01-01,133