DOI: 10.1016/j.watres.2018.01.019
Scopus记录号: 2-s2.0-85041396462
论文题名: Degradation of organic pollutants by Vacuum-Ultraviolet (VUV): Kinetic model and efficiency
作者: Xie P. ; Yue S. ; Ding J. ; Wan Y. ; Li X. ; Ma J. ; Wang Z.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 133 起始页码: 69
结束页码: 78
语种: 英语
英文关键词: Hydroxyl radical
; Kinetic model
; Micropollutants
; Quantum yield
; Vacuum-ultraviolet (VUV)
Scopus关键词: Benzoic acid
; Biological materials
; Chlorine compounds
; Degradation
; Efficiency
; Kinetic parameters
; Kinetic theory
; pH
; Quantum yield
; Solutions
; Water treatment
; Hydroxyl radicals
; Kinetic modeling
; Micropollutants
; Organic intermediates
; Organic micro-pollutants
; Oxidation efficiency
; Pollutant degradation
; Vacuum ultraviolets
; Organic pollutants
; 4,4' isopropylidenediphenol
; benzoic acid
; chloride
; humic acid
; nitrobenzene
; phthalic acid dimethyl ester
; benzhydryl derivative
; chlorine
; hydroxyl radical
; nitrobenzene derivative
; phenol derivative
; phthalic acid derivative
; alkalinity
; chemical compound
; concentration (composition)
; degradation
; humic acid
; hydroxyl radical
; numerical model
; organic matter
; organic pollutant
; oxidation
; phthalate
; pollutant removal
; reaction kinetics
; ultraviolet radiation
; water treatment
; alkalinity
; Article
; concentration at steady-state
; degradation kinetics
; kinetics
; observed association rate constant
; photolysis
; priority journal
; quantum yield
; sedimentation
; temperature dependence
; total organic carbon
; ultraviolet radiation
; vacuum ultraviolet
; water pollutant
; water quality
; water treatment
; chemistry
; humic substance
; oxidation reduction reaction
; procedures
; theoretical model
; ultraviolet radiation
; vacuum
; water management
; water pollutant
; Benzhydryl Compounds
; Benzoic Acid
; Chlorine
; Humic Substances
; Hydroxyl Radical
; Kinetics
; Models, Theoretical
; Nitrobenzenes
; Oxidation-Reduction
; Phenols
; Phthalic Acids
; Ultraviolet Rays
; Vacuum
; Water Pollutants, Chemical
; Water Purification
英文摘要: Vacuum-Ultraviolet (VUV), an efficient and green method to produce hydroxyl radical (•OH), is effective in degrading numerous organic contaminants in aqueous solution. Here, we proposed an effective and simple kinetic model to describe the degradation of organic pollutants in VUV system, by taking the •OH scavenging effects of formed organic intermediates as co-existing organic matter in whole. Using benzoic acid (BA) as a •OH probe, •OH was regarded vital for pollutant degradation in VUV system, and the thus developed model successfully predicted its degradation kinetics under different conditions. Effects of typical influencing factors such as BA concentrations and UV intensity were investigated quantitatively by the model. Temperature was found to be an important influencing factor in the VUV system, and the quantum yield of •OH showed a positive linear dependence on temperature. Impacts of humic acid (HA), alkalinity, chloride, and water matrices (realistic waters) on the oxidation efficiency were also examined. BA degradation was significantly inhibited by HA due to its scavenging of •OH, but was influenced much less by the alkalinity and chloride; high oxidation efficiency was still obtained in the realistic water. The degradation kinetics of three other typical micropollutants including bisphenol A (BPA), nitrobenzene (NB) and dimethyl phthalate (DMP), and the mixture of co-existing BA, BPA and DMP were further studied, and the developed model predicted the experimental data well, especially in realistic water. It is expected that this study will provide an effective approach to predict the degradation of organic micropollutants by the promising VUV system, and broaden the application of VUV system in water treatment. © 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/112945
Appears in Collections: 气候减缓与适应
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作者单位: School of Environmental Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, China; Design and Research Institute of Architecture and Urban Planning, Huazhong University of Science and Technology, Wuhan, 430074, China; School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310018, China; State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin, 150090, China
Recommended Citation:
Xie P.,Yue S.,Ding J.,et al. Degradation of organic pollutants by Vacuum-Ultraviolet (VUV): Kinetic model and efficiency[J]. Water Research,2018-01-01,133