This paper reviews the application of indirect electro-oxidation processes such as electroFenton, photoelectro-Fenton and peroxi-coagulation to decontaminate waters containing persistent pesticides. The fundamentals of these electrochemical advanced oxidation processes (EAOPs) are described. They are environmentally friendly technologies based on the electrogeneration of H2O2 at a carbonaceous ...

Introduction: Dyes are visible materials and are considered as one of the hazardous components that make up industrial waste. Therefore it is removed from bodies of water, using various methods. In this regard, the Fenton oxidation process is one of the most effective ways to remove colored contaminants in aquatic environments, which has many applications today. Materials and Methods: In this...

in this work, we developed a method which combined the processes of acid-leaching, ammonium jarosite precipitating and electro-depositing to recover copper and nickel from electroplating sludge. residual sludge from an electroplating plant located in qingdao was used for acid-leaching, and more than 95% of copper, nickel, zinc, chromium and iron were extracted from the sludge. after acid-leachi...

This paper evaluates the treatment of textile dyeing wastewater by using steel scrap as adsorbents and heterogeneous catalysts for Modified Fenton oxidation. The efficiency of the process was explored as a function of the experimental parameters: pH, hydrogen peroxide concentration and Steel scrap content. The composites with high steel scrap content were effective to adsorb colour and COD in t...

The homogeneous Fenton reaction is a complex chemical system that involves hydrogen peroxide and dissolved iron salts to generate highly reactive hydroxyl radicals in acidic solution. It is also known that the degradation rate of the Fenton system is significantly enhanced when the mixture is irradiated with UV or UV/Visible radiation. This photo-assisted Fenton process, or photo-Fenton process...

Electro-Fenton (EF) and peroxyelectrocoagulation (PEC) processes were investigated to mineralize 10 mg L−1 erythromycin from ultrapure water, evaluating the influence of anode material (BDD Fe), current density (janode) (5 mA cm−2 cm−2), oxygen flowrate injected cathode (0.8 L min−1 O2 2.0 O2) pH (2.8, 5.0 7.0) on process efficiency electricity costs. 70% mineralization was reached after applyi...