DOI: 10.1016/j.watres.2018.06.023
Scopus记录号: 2-s2.0-85049313274
论文题名: Ferrate(VI) oxidation of polychlorinated diphenyl sulfides: Kinetics, degradation, and oxidized products
作者: Chen J. ; Xu X. ; Zeng X. ; Feng M. ; Qu R. ; Wang Z. ; Nesnas N. ; Sharma V.K.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 143 起始页码: 1
结束页码: 9
语种: 英语
英文关键词: Dioxin-like compounds
; Estimated toxicity
; Ferrate
; Reaction pathways
; Water constituents
Scopus关键词: Atoms
; Chemical bonds
; Chlorine
; Free energy
; Gibbs free energy
; Organic pollutants
; Oxidation
; Rate constants
; Sulfur compounds
; Toxicity
; Dioxin-like compounds
; Ferrate
; Gibbs free energy of formation
; Hydroxylation of benzene
; Oxidized products
; Reaction pathways
; Second-order rate constants
; Water constituents
; Iron compounds
; 2,2',3',4,5 pentachlorodiphenyl sulfide
; benzene
; chlorine
; ferrate
; humic acid
; hydroxyl group
; iron
; polychlorinated biphenyl
; polychlorinated diphenyl sulfide
; sulfoxide
; sulfur
; unclassified drug
; benzene
; chemical compound
; chemical pollutant
; chemical reaction
; degradation
; dioxin
; Gibbs free energy
; humic acid
; ion
; oxidation
; pH
; pollutant removal
; reaction kinetics
; sulfide
; toxicity
; water chemistry
; Article
; degradation
; ecotoxicity
; hydroxylation
; kinetics
; liquid chromatography-mass spectrometry
; oxidation
; pH
; priority journal
; reaction analysis
; spectroscopy
英文摘要: This paper presents oxidation of polychlorinated diphenyl sulfides (PCDPSs), dioxin-like compounds, by ferrate(VI) (FeVIO4 2−, Fe(VI)). Kinetics of the reactions of Fe(VI) with seventeen PCDPSs, differ in number and positions of chlorine atoms (from 2 to 7), were investigated at pH 8.0. The second-order rate constants (k, M−1 s−1) of the reactions varied with the numbers and positions of chlorine atoms and appeared to be related with standard Gibbs free energy of formation (ΔfG0) of PCDPSs. Degradation experiments in the presence of ions and humic acid demonstrated complete removal of PeCDPS by Fe(VI) in minutes. Pathways of the reaction were investigated by identifying oxidized products (OPs) of the reaction between Fe(VI) and 2,2′,3’,4,5-pentachlorodiphenyl sulfide (PeCDPS) at pH 8.0. Pathways of oxidation involved major pathway of attack on sulfur(II) by Fe(VI) in steps to yield sulfoxide type products, and subsequent breakage of C-S bond with the formation of sulfonic acid-containing trichloro compound. Minor pathways were hydroxylation of benzene ring and substitution of chlorine atom with hydroxyl group. Estimation of toxicity of OPs of the oxidation of PeCDPS by Fe(VI) suggested the decreased toxicity from the parent contaminant. © 2018 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112588
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, China; Department of Chemistry, Florida Institute of Technology, 150 W University Blvd, Melbourne, FL 32901, United States; 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:
Chen J.,Xu X.,Zeng X.,et al. Ferrate(VI) oxidation of polychlorinated diphenyl sulfides: Kinetics, degradation, and oxidized products[J]. Water Research,2018-01-01,143