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Heterogeneous Fenton Catalytic Oxidation for Water Treatment

Lida Jia , Qingrui Zhang

Progress in Chemistry ›› 2020, Vol. 32 ›› Issue (7) : 978 -988.

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Progress in Chemistry ›› 2020, Vol. 32 ›› Issue (7) : 978-988 DOI: 10.7536/PC200201
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Heterogeneous Fenton Catalytic Oxidation for Water Treatment
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Abstract

Advanced oxidation technology(AOPs) is a hot issue in current water treatment research, such as the representative Heterogeneous Fenton catalytic oxidation. It can generate active oxygen species such as hydroxyl radicals(·OH) during the reaction, which attack organic pollutants unselectively and gradually decompose organic macromolecules into small molecules, achieving the efficient removing of toxic and harmful pollutants. Compared with homogeneous Fenton reactions, heterogeneous Fenton reactions have various advantages, such as wide pH response, recyclability of catalysts, and no generation of iron mud. However, considering their intrinsic characteristics and limits of solid-phase catalysts, there are still some problems inhibiting the large-scale application, such as low activity under neutral conditions, low utilization of hydrogen peroxide(H2O2), and low conversion rate of Fe(Ⅲ)/Fe(Ⅱ). This article summarizes the heterogeneous Fenton reaction mechanism involving different active oxygen species as well as various heterogeneous Fenton catalysts and their applications in control of organic pollutants and provides a reference for continuing research on heterogeneous Fenton catalysts.

Contents

1 Introduction

2 Classical Fenton and heterogeneous Fenton reaction

3 Mechanism of the heterogeneous Fenton reaction

3.1 Hydroxyl radical mechanism

3.2 Singlet oxygen mechanism

3.3 High-valent iron species mechanism

4 Development and utilization of heterogeneous Fenton co-catalyst

4.1 Accelerate interface electron migration

4.2 Increase active site

5 Heterogeneous Fenton catalytic oxidation for organic wastewater

5.1 Dye wastewater

5.2 Antibiotic wastewater

5.3 Phenolic wastewater

6 Conclusion and outlook

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Keywords

heterogeneous Fenton / mechanism / co-catalyst / organic wastewater

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Lida Jia, Qingrui Zhang. Heterogeneous Fenton Catalytic Oxidation for Water Treatment. Progress in Chemistry, 2020, 32(7): 978-988 DOI:10.7536/PC200201

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Funding

National Natural Science Foundation of China(21876145)

National Natural Science Foundation of China(51578476)

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