Degradation of 2,4,6-trichloroanisole by UV/H2O2: kinetics and products

Cong Wei Luo; Jun Ma; Jin Jiang; Chao Ting Guan; Su Yan Pang; Hong Jun Liu; Xue Dong Zhai; Dao Ji Wu

Degradation of 2,4,6-trichloroanisole by UV/H₂O₂: kinetics and products

Cong Wei Luo
, Jun Ma^*
, Jin Jiang
, Chao Ting Guan
, Su Yan Pang
, Hong Jun Liu
, Xue Dong Zhai
, Dao Ji Wu

^*Corresponding author for this work

Harbin Institute of Technology
Harbin University of Science and Technology
Shandong Jianzhu University

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

The degradation of 2,4,6-trichloroanisole (TCA) in UV/H₂O₂ process was investigated in the present study. Effects of water matrix (i.e., natural organic matter (NOM), carbonate/bicarbonate (HCO₃^-/CO₃^2-), chloride ions (Cl^-)), TCA concentration, and H₂O₂ dosage were evaluated. The second order rate constant of TCA react with HO• was determined to be 5.1×10⁹ L/(mol·s). The degradation efficiency of TCA was increased with increasing H₂O₂ dosage. The increase of TCA initial concentration (0.5~200 nmol/L) and Cl^- concentration (0.5~10 mmol/L) had slight negative effects on TCA degradation. The removal of TCA was significantly inhibited in the presence of NOM or HCO₃^-/CO₃^2-. Further, the main degradation products, including 2,4,6-trichlorophenol, 2,6-dichloro-1,4-benzoquinone and two aromatic ring-opening products, were detected in the reaction of TCA with HO•, and thus a tentative pathway was proposed.

Original language	English
Pages (from-to)	1831-1837
Number of pages	7
Journal	Zhongguo Huanjing Kexue/China Environmental Science
Volume	37
Issue number	5
State	Published - 20 May 2017

Keywords

2,4,6-trichloroanisole
Degradation pathway
Hydroxyl radical
Oxidant products

Cite this

@article{cbbf9c87fba74f80817146f61b369b51,

title = "Degradation of 2,4,6-trichloroanisole by UV/H2O2: kinetics and products",

abstract = "The degradation of 2,4,6-trichloroanisole (TCA) in UV/H2O2 process was investigated in the present study. Effects of water matrix (i.e., natural organic matter (NOM), carbonate/bicarbonate (HCO3-/CO32-), chloride ions (Cl-)), TCA concentration, and H2O2 dosage were evaluated. The second order rate constant of TCA react with HO• was determined to be 5.1×109 L/(mol·s). The degradation efficiency of TCA was increased with increasing H2O2 dosage. The increase of TCA initial concentration (0.5\textasciitilde{}200 nmol/L) and Cl- concentration (0.5\textasciitilde{}10 mmol/L) had slight negative effects on TCA degradation. The removal of TCA was significantly inhibited in the presence of NOM or HCO3-/CO32-. Further, the main degradation products, including 2,4,6-trichlorophenol, 2,6-dichloro-1,4-benzoquinone and two aromatic ring-opening products, were detected in the reaction of TCA with HO•, and thus a tentative pathway was proposed.",

keywords = "2,4,6-trichloroanisole, Degradation pathway, Hydroxyl radical, Oxidant products",

author = "Luo, \{Cong Wei\} and Jun Ma and Jin Jiang and Guan, \{Chao Ting\} and Pang, \{Su Yan\} and Liu, \{Hong Jun\} and Zhai, \{Xue Dong\} and Wu, \{Dao Ji\}",

year = "2017",

month = may,

day = "20",

language = "英语",

volume = "37",

pages = "1831--1837",

journal = "Zhongguo Huanjing Kexue/China Environmental Science",

issn = "1000-6923",

publisher = "Chinese Society for Environmental Sciences",

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TY - JOUR

T1 - Degradation of 2,4,6-trichloroanisole by UV/H2O2

T2 - kinetics and products

AU - Luo, Cong Wei

AU - Ma, Jun

AU - Jiang, Jin

AU - Guan, Chao Ting

AU - Pang, Su Yan

AU - Liu, Hong Jun

AU - Zhai, Xue Dong

AU - Wu, Dao Ji

PY - 2017/5/20

Y1 - 2017/5/20

N2 - The degradation of 2,4,6-trichloroanisole (TCA) in UV/H2O2 process was investigated in the present study. Effects of water matrix (i.e., natural organic matter (NOM), carbonate/bicarbonate (HCO3-/CO32-), chloride ions (Cl-)), TCA concentration, and H2O2 dosage were evaluated. The second order rate constant of TCA react with HO• was determined to be 5.1×109 L/(mol·s). The degradation efficiency of TCA was increased with increasing H2O2 dosage. The increase of TCA initial concentration (0.5~200 nmol/L) and Cl- concentration (0.5~10 mmol/L) had slight negative effects on TCA degradation. The removal of TCA was significantly inhibited in the presence of NOM or HCO3-/CO32-. Further, the main degradation products, including 2,4,6-trichlorophenol, 2,6-dichloro-1,4-benzoquinone and two aromatic ring-opening products, were detected in the reaction of TCA with HO•, and thus a tentative pathway was proposed.

AB - The degradation of 2,4,6-trichloroanisole (TCA) in UV/H2O2 process was investigated in the present study. Effects of water matrix (i.e., natural organic matter (NOM), carbonate/bicarbonate (HCO3-/CO32-), chloride ions (Cl-)), TCA concentration, and H2O2 dosage were evaluated. The second order rate constant of TCA react with HO• was determined to be 5.1×109 L/(mol·s). The degradation efficiency of TCA was increased with increasing H2O2 dosage. The increase of TCA initial concentration (0.5~200 nmol/L) and Cl- concentration (0.5~10 mmol/L) had slight negative effects on TCA degradation. The removal of TCA was significantly inhibited in the presence of NOM or HCO3-/CO32-. Further, the main degradation products, including 2,4,6-trichlorophenol, 2,6-dichloro-1,4-benzoquinone and two aromatic ring-opening products, were detected in the reaction of TCA with HO•, and thus a tentative pathway was proposed.

KW - 2,4,6-trichloroanisole

KW - Degradation pathway

KW - Hydroxyl radical

KW - Oxidant products

UR - https://www.scopus.com/pages/publications/85027707491

M3 - 文章

AN - SCOPUS:85027707491

SN - 1000-6923

VL - 37

SP - 1831

EP - 1837

JO - Zhongguo Huanjing Kexue/China Environmental Science

JF - Zhongguo Huanjing Kexue/China Environmental Science

IS - 5

ER -

Degradation of 2,4,6-trichloroanisole by UV/H₂O₂: kinetics and products

Abstract

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