DOI: 10.1016/j.watres.2018.03.057
Scopus记录号: 2-s2.0-85047417817
论文题名: Degradation kinetics and transformation products of chlorophene by aqueous permanganate
作者: Xu X. ; Chen J. ; Wang S. ; Ge J. ; Qu R. ; Feng M. ; Sharma V.K. ; Wang Z.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 138 起始页码: 293
结束页码: 300
语种: 英语
英文关键词: Chlorophene
; Kinetics
; Oxidation products
; Pathways
; Permanganate
Scopus关键词: Biodegradation
; Carboxylation
; Clarification
; Degradation
; Density functional theory
; Effluent treatment
; Effluents
; Enzyme kinetics
; Manganese oxide
; Manganese removal (water treatment)
; Mass spectrometers
; Negative ions
; Oxidation
; Rate constants
; Reaction intermediates
; Risk assessment
; Water treatment
; Chlorophene
; Degradation kinetics
; Oxidation products
; Pathways
; Permanganate
; Second-order rate constants
; Time-of-flight mass spectrometers
; Transformation products
; Iron compounds
; clorofene
; ferrous ion
; humic acid
; manganese
; permanganate
; river water
; unclassified drug
; antiinfective agent
; clorofene
; dichlorophen
; manganese derivative
; oxide
; permanganic acid
; bacterium
; concentration (composition)
; manganese
; mathematical theory
; oxidation
; phenolic compound
; reaction kinetics
; reaction rate
; acute toxicity
; Article
; decarboxylation
; degradation kinetics
; density
; density functional theory
; effluent
; electrospray
; liquid chromatography
; mass spectrometry
; oxidation
; oxidation reduction potential
; pH
; Photobacterium phosphoreum
; priority journal
; rate constant
; reaction analysis
; temperature
; time of flight mass spectrometry
; water treatment
; analogs and derivatives
; chemistry
; drug effect
; kinetics
; oxidation reduction reaction
; Photobacterium
; procedures
; river
; toxicity
; water management
; water pollutant
; Anti-Bacterial Agents
; Dichlorophen
; Kinetics
; Manganese Compounds
; Mass Spectrometry
; Oxidation-Reduction
; Oxides
; Photobacterium
; Rivers
; Water Pollutants, Chemical
; Water Purification
英文摘要: This paper evaluates the oxidation of an antibacterial agent, chlorophene (4-chloro-2-(phenylmethyl)phenol, CP), by permanganate (Mn(VII)) in water. Second-order rate constant (k) for the reaction between Mn(VII) and CP was measured as (2.05 ± 0.05) × 101 M−1 s−1 at pH 7.0 for an initial CP concentration of 20.0 μM and Mn(VII) concentration of 60.0 μM. The value of k decreased with increasing pH in the pH range of 5.0–7.0, and then increased with an increase in solution pH from 7.0 to 10.0. The presence of MnO2 and Fe3+ in water generally enhanced the removal of CP, while the effect of humic acid was not obvious. Fourteen oxidation products of CP were identified by an electrospray time-of-flight mass spectrometer, and direct oxidation, ring-opening, and decarboxylation were mainly observed in the reaction process. The initial reaction sites of CP by Mn(VII) oxidation were rationalized by density functional theory calculations. Toxicity changes of the reaction solutions were assessed by the luminescent bacteria P. phosphoreum, and the intermediate products posed a relatively low ecological risk during the degradation process. The efficient removal of CP in secondary clarifier effluent and river water demonstrated the potential application of this Mn(VII) oxidation method in water treatment. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112797
Appears in Collections: 气候减缓与适应
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作者单位: State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Jiangsu Nanjing, 210023, China; Program for the Environment and Sustainability, Department of Environmental and Occupational Health, School of Public Health, Texas A&M University, College Station, TX 77843, United States
Recommended Citation:
Xu X.,Chen J.,Wang S.,et al. Degradation kinetics and transformation products of chlorophene by aqueous permanganate[J]. Water Research,2018-01-01,138