DOI: 10.1016/j.watres.2017.11.054
Scopus记录号: 2-s2.0-85036549197
论文题名: Comparison of pharmaceutical abatement in various water matrices by conventional ozonation, peroxone (O3/H2O2), and an electro-peroxone process
作者: Wang H. ; Zhan J. ; Yao W. ; Wang B. ; Deng S. ; Huang J. ; Yu G. ; Wang Y.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 130 起始页码: 127
结束页码: 138
语种: 英语
英文关键词: Advanced oxidation process
; Hydrogen peroxide
; Micropollutant
; Ozonation
; Water matrix
Scopus关键词: Biological materials
; Carbon
; Drug products
; Efficiency
; Effluents
; Groundwater
; Hydrogen peroxide
; Linear transformations
; Organic carbon
; Ozone
; Ozonization
; Potable water
; Reaction kinetics
; Surface waters
; Water
; Advanced Oxidation Processes
; Clofibric acid
; Dissolved organic carbon
; Dissolved organic matters
; Electrogeneration
; Micropollutants
; Secondary effluent
; Water matrices
; Ozone water treatment
; dissolved organic matter
; ground water
; organic carbon
; ozone
; surface water
; clofibric acid
; hydrogen peroxide
; ibuprofen
; chemical pollutant
; comparative study
; decomposition
; dissolved organic carbon
; dissolved organic matter
; drinking water
; drug
; effluent
; groundwater
; hydrogen peroxide
; hydroxide
; hydroxyl radical
; oxidation
; ozonation
; ozone
; reaction kinetics
; reduction
; surface water
; transformation
; Article
; chemical reaction
; chemical reaction kinetics
; decomposition
; effluent
; electro peroxone process
; ozonation
; priority journal
; analysis
; chemistry
; comparative study
; kinetics
; oxidation reduction reaction
; procedures
; water management
; water pollutant
; Clofibric Acid
; Groundwater
; Hydrogen Peroxide
; Ibuprofen
; Kinetics
; Oxidation-Reduction
; Ozone
; Water Pollutants, Chemical
; Water Purification
英文摘要: Pharmaceutical abatement in a groundwater (GW), surface water (SW), and secondary effluent (SE) by conventional ozonation, the conventional peroxone (O3/H2O2), and the electro-peroxone (E-peroxone) processes was compared in batch tests. SE had significantly more fast-reacting dissolved organic matter (DOM) moieties than GW and SW. Therefore, O3 decomposed much faster in SE than in GW and SW. At specific ozone doses of 0.5–1.5 mg O3/mg dissolved organic carbon (DOC), the application of O3/H2O2 and E-peroxone process (by adding external H2O2 stocks or in-situ generating H2O2 from cathodic O2 reduction during ozonation) similarly enhanced the [rad]OH yield from O3 decomposition by ∼5–12% and 5–7% in GW and SW, respectively, compared to conventional ozonation. In contrast, due to the slower reaction kinetics of O3 with H2O2 than O3 with fast-reacting DOM moieties, the addition or electro-generation of H2O2 hardly increased the [rad]OH yield (<4% increases) in SE. Corresponding to the changes in the [rad]OH yields, the abatement efficiencies of ozone-resistant pharmaceuticals (ibuprofen and clofibric acid) increased evidently in GW (up to ∼14–18% at a specific ozone dose of 1.5 mg O3/mg DOC), moderately in SW (up to 6–10% at 0.5 mg O3/mg DOC), and negligibly in SE during the O3/H2O2 and E-peroxone treatment compared to conventional ozonation. These results indicate that similar to the conventional O3/H2O2 process, the E-peroxone process can more pronouncedly enhance O3 transformation to [rad]OH, and thus increase the abatement efficiency of ozone-resistant pharmaceuticals in water matrices exerting relatively high ozone stability (e.g., groundwater and surface water with low DOM contents). Therefore, by installing electrodes in existing ozone reactors, the E-peroxone process may provide a convenient way to enhance pharmaceutical abatement in drinking water applications, where groundwater and surface water with low DOM contents are used as the source waters. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113054
Appears in Collections: 气候减缓与适应
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作者单位: School of Environment, Beijing Key Laboratory for Emerging Organic Contaminants Control, State Key Joint Laboratory of Environmental Simulation and Pollution Control, Tsinghua University, Beijing, 100084, China
Recommended Citation:
Wang H.,Zhan J.,Yao W.,et al. Comparison of pharmaceutical abatement in various water matrices by conventional ozonation, peroxone (O3/H2O2), and an electro-peroxone process[J]. Water Research,2018-01-01,130