Kinetic Modeling of the Electro-Fenton Process: Quantification of Reactive Oxygen Species Generation

Shan Qiu; Di He; Jinxing Ma; Tongxu Liu; T. David Waite

doi:10.1016/j.electacta.2015.06.103

Kinetic Modeling of the Electro-Fenton Process: Quantification of Reactive Oxygen Species Generation

Shan Qiu
, Di He
, Jinxing Ma
, Tongxu Liu
, T. David Waite^*

^*Corresponding author for this work

School of Environment

University of New South Wales
Tongji University
Guangdong Institute of Eco-Environment and Soil Science

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

133 Scopus citations

Abstract

ABSTRACT In this study, Electro-Fenton (E-Fenton) reactions at pH 3.0 were initiated by cathodic generation of H₂O₂, with subsequent production of OH following the addition of Fe(II) or Fe(III) ions into the system. The variation in concentrations of H₂O₂, Fe(II), total Fe and OH following addition of Fe ions into the E-Fenton system was investigated over a range of conditions. A kinetic model incorporating the key processes operating in the E-Fenton system was developed with particular attention given to (i) cathodic generation of H₂O₂ and anodic formation of OH, (ii) production of OH via homogeneous Fenton reactions, and (ii) surface reactions including electro-sorption of Fe ions and cathodic reduction of Fe(III) to Fe(II) species resulting in the enhancement of production of OH via surface-located Fenton reactions.

Original language	English
Article number	25228
Pages (from-to)	51-58
Number of pages	8
Journal	Electrochimica Acta
Volume	176
DOIs	https://doi.org/10.1016/j.electacta.2015.06.103
State	Published - 14 Jul 2015

Keywords

Contaminant degradation
Electro-Fenton
Hydrogen peroxide
Kinetics
Reactive oxygen species

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10.1016/j.electacta.2015.06.103

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@article{359c403e1390480ba4e7d83ecd743e61,

title = "Kinetic Modeling of the Electro-Fenton Process: Quantification of Reactive Oxygen Species Generation",

abstract = "ABSTRACT In this study, Electro-Fenton (E-Fenton) reactions at pH 3.0 were initiated by cathodic generation of H2O2, with subsequent production of OH following the addition of Fe(II) or Fe(III) ions into the system. The variation in concentrations of H2O2, Fe(II), total Fe and OH following addition of Fe ions into the E-Fenton system was investigated over a range of conditions. A kinetic model incorporating the key processes operating in the E-Fenton system was developed with particular attention given to (i) cathodic generation of H2O2 and anodic formation of OH, (ii) production of OH via homogeneous Fenton reactions, and (ii) surface reactions including electro-sorption of Fe ions and cathodic reduction of Fe(III) to Fe(II) species resulting in the enhancement of production of OH via surface-located Fenton reactions.",

keywords = "Contaminant degradation, Electro-Fenton, Hydrogen peroxide, Kinetics, Reactive oxygen species",

author = "Shan Qiu and Di He and Jinxing Ma and Tongxu Liu and Waite, \{T. David\}",

note = "Publisher Copyright: {\textcopyright} 2015 Z.",

year = "2015",

month = jul,

day = "14",

doi = "10.1016/j.electacta.2015.06.103",

language = "英语",

volume = "176",

pages = "51--58",

journal = "Electrochimica Acta",

issn = "0013-4686",

publisher = "Elsevier Ltd",

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TY - JOUR

T1 - Kinetic Modeling of the Electro-Fenton Process

T2 - Quantification of Reactive Oxygen Species Generation

AU - Qiu, Shan

AU - He, Di

AU - Ma, Jinxing

AU - Liu, Tongxu

AU - Waite, T. David

PY - 2015/7/14

Y1 - 2015/7/14

N2 - ABSTRACT In this study, Electro-Fenton (E-Fenton) reactions at pH 3.0 were initiated by cathodic generation of H2O2, with subsequent production of OH following the addition of Fe(II) or Fe(III) ions into the system. The variation in concentrations of H2O2, Fe(II), total Fe and OH following addition of Fe ions into the E-Fenton system was investigated over a range of conditions. A kinetic model incorporating the key processes operating in the E-Fenton system was developed with particular attention given to (i) cathodic generation of H2O2 and anodic formation of OH, (ii) production of OH via homogeneous Fenton reactions, and (ii) surface reactions including electro-sorption of Fe ions and cathodic reduction of Fe(III) to Fe(II) species resulting in the enhancement of production of OH via surface-located Fenton reactions.

AB - ABSTRACT In this study, Electro-Fenton (E-Fenton) reactions at pH 3.0 were initiated by cathodic generation of H2O2, with subsequent production of OH following the addition of Fe(II) or Fe(III) ions into the system. The variation in concentrations of H2O2, Fe(II), total Fe and OH following addition of Fe ions into the E-Fenton system was investigated over a range of conditions. A kinetic model incorporating the key processes operating in the E-Fenton system was developed with particular attention given to (i) cathodic generation of H2O2 and anodic formation of OH, (ii) production of OH via homogeneous Fenton reactions, and (ii) surface reactions including electro-sorption of Fe ions and cathodic reduction of Fe(III) to Fe(II) species resulting in the enhancement of production of OH via surface-located Fenton reactions.

KW - Contaminant degradation

KW - Electro-Fenton

KW - Hydrogen peroxide

KW - Kinetics

KW - Reactive oxygen species

UR - https://www.scopus.com/pages/publications/84937605784

U2 - 10.1016/j.electacta.2015.06.103

DO - 10.1016/j.electacta.2015.06.103

M3 - 文章

AN - SCOPUS:84937605784

SN - 0013-4686

VL - 176

SP - 51

EP - 58

JO - Electrochimica Acta

JF - Electrochimica Acta

M1 - 25228

ER -

Kinetic Modeling of the Electro-Fenton Process: Quantification of Reactive Oxygen Species Generation

Abstract

Keywords

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