Electro-Fenton Oxidation for Degradation of Direct Red Organic Pollutants Using Stainless Steel and Iron Electrodes

Abstract

The most common pollutant in industrial wastewater is organic compounds. Traditional wastewater treatment systems do not remove effect of toxic and effect of dangerous pollutants from the wastewater. The newest and most powerful method for treating wastewater from organic pollutants is the electro-Venton method, and it is considered an environmentally friendly method. Response surface methodology (RSM) and Minitab-17 method were used to study the impact of operational parameters such as current (0.5-2 mA), electrolysis duration (10–30 min), and Hydrogen peroxide concentration (0.0003 –0.0015 M). The pH, agitation speed, and the sodium chloride solution were all adjusted to 250 rpm, 3 g, and 0.25 g, respectively. Pollutants and their intermediate reaction products were found to be promptly eliminated and mineralized. When the operating variables were tuned, more than 98% of organic material removal efficiency and 39.67 kWh/m3 energy consumption were attained.