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

文献类型： 外文期刊

作者： Qiu, Shan 1 ; He, Di 2 ; Ma, Jinxing 3 ; Liu, Tongxu 4 ; Waite, T. David 2 ;

作者机构： 1.Harbin Inst Technol, Sch Municipal & Environm Engn, Harbin 150090, Peoples R China

2.Univ New S Wales, Sch Civil & Environm Engn, Sydney, NSW 2052, Australia

3.Tongji Univ, State Key Lab Pollut Control & Resource Reuse, Sch Environm Sci & Engn, Shanghai 200092, Peoples R China

4.Guangdong Inst Ecoenvironm & Soil Sci, Guangdong Key Lab Agr Environm Pollut Integrated, Guangzhou, Guangdong, Peoples R China

关键词： Electro-Fenton;Reactive oxygen species;Hydrogen peroxide;Contaminant degradation;Kinetics

期刊名称：ELECTROCHIMICA ACTA （ 影响因子：6.901； 五年影响因子：6.016 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： In this study, Electro-Fenton (E-Fenton) reactions at pH 3.0 were initiated by cathodic generation of H2O2, with subsequent production of (OH)-O-center dot 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)-O-center dot 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)-O-center dot, (ii) production of (OH)-O-center dot 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)-O-center dot via surface-located Fenton reactions. (C) 2015 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license.

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