DOI: 10.1016/j.watres.2018.03.035
Scopus记录号: 2-s2.0-85047441300
论文题名: Kinetic modeling of the effect of solids retention time on methanethiol dynamics in anaerobic digestion
作者: Zhang D. ; Strawn M. ; Novak J.T. ; Wang Z.-W.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 138 起始页码: 301
结束页码: 311
语种: 英语
英文关键词: Anaerobic digestion
; Mathematical model
; Methanethiol
; Odor
Scopus关键词: Arsenic compounds
; Kinetic parameters
; Kinetic theory
; Mathematical models
; Odor removal
; Odors
; Reaction intermediates
; Sludge digestion
; Anaerobic conditions
; Anaerobic digester
; Anaerobic reactions
; Bell-shaped curves
; Intermediate compound
; Maintenance coefficient
; Methanethiol
; Solids retention time
; Anaerobic digestion
; methanethiol
; methanethiol
; thiol derivative
; anaerobic digestion
; calibration
; chemical reaction
; experimental study
; kinetics
; laboratory method
; numerical model
; odor
; organic compound
; protein
; retention
; solid
; anaerobic digestion
; Article
; calibration
; dynamics
; kinetics
; priority journal
; protein content
; retention time
; sludge
; solid
; air pollutant
; anaerobic growth
; analysis
; bioreactor
; kinetics
; metabolism
; procedures
; sewage
; theoretical model
; Air Pollutants
; Anaerobiosis
; Bioreactors
; Kinetics
; Models, Theoretical
; Sewage
; Sulfhydryl Compounds
; Waste Disposal, Fluid
英文摘要: The highly volatile methanethiol (MT) with an extremely low odor threshold and distinctive putrid smell is often identified as a major odorous compound generated under anaerobic conditions. As an intermediate compound in the course of anaerobic digestion, the extent of MT emission is closely related to the time of anaerobic reaction. In this study, lab-scale anaerobic digesters were operated at solids retention time (SRTs) of 15, 20, 25, 30, 40 and 50 days to investigate the effect of SRT on MT emission. The experimental results demonstrated a bell-shaped curve of MT emission versus SRT with a peak around 20 days SRT. In order to understand this SRT effect, a kinetic model was developed to describe MT production and utilization dynamics in the course of anaerobic digestion and calibrated with the experimental results collected from this study. The model outcome revealed that the high protein content in the feed sludge together with the large maintenance coefficient of MT fermenters are responsible for the peak MT emission emergence in the range of typical SRT used for anaerobic digestion. A further analysis of the kinetic model shows that it can be extensively simplified with reasonable approximation to a form that anaerobic digestion practitioners could easily use to predict the MT and SRT relationship. © 2018 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112801
Appears in Collections: 气候减缓与适应
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作者单位: Occoquan Laboratory, Department of Civil and Environmental Engineering, Virginia Tech, 9408 Prince William Street, Manassas, VA 20110, United States; Arlington County Water Pollution Control Bureau, 3402 S Glebe Rd, Arlington, VA 22202, United States
Recommended Citation:
Zhang D.,Strawn M.,Novak J.T.,et al. Kinetic modeling of the effect of solids retention time on methanethiol dynamics in anaerobic digestion[J]. Water Research,2018-01-01,138