Degradation of some azo dyes by Fenton process. An overview

Abstract

Dyes are used in various industries as colouring agents. Synthetic dyes released in wastewater pose a threat to environmental safety. Several methods have been used for the removal of dyes from water bodies. The advanced oxidation processes (AOPs) have been proven to be effective technologies for dyes degradation. In this review, different types of Fenton processes such as electro-Fenton, photo-Fenton and sono-Fenton were chosen to study the degradation of some azo dyes.