(392c) Critical Review of the Fenton Oxidation Process for Industrial Wastewater Treatment

Industrial wastewater is produced in large quantities in developing countries that cannot be treated using conventional treatment technologies. Separators and traditional chemical treatment procedures cannot remove partially soluble organic pollutants such as pesticides, PAHs, oils, and grease. Chemical treatment techniques are limited by high molecular weight organic substances such as dyes, and large wastewater output. They also lack suitable space restricting the ability of biological treatment methods. Biological treatment approaches cannot handle toxic organic effluents such phenols or pharmaceutical wastes. The capability of Advanced Oxidation Processes (AOPs), particularly Fenton’s oxidation, to remove a broad spectrum of industrial wastewater pollutants in a cost-effective and timely manner is described in this paper. The Fenton process uses iron to reproduce hydroxyl radicals (HO·) produced by hydrogen peroxide. The ·OH radical that is created is capable of degrading recalcitrant organic molecules. The Fenton's oxidation process may be divided into two categories: conventional Fenton’s oxidation (CF) and heterogeneous Fenton’s oxidation. Fenton oxidation can degrade around 87.5±6.67% of industrial COD pollutants in acidic conditions with a pH of 3.6±0.9. Fenton reagents, individually or combined by microwave or UV treatment, can remove 82% of pesticides, 98.3% of phenols, 88% of turbidity, 99% of methylene Blue, 100% of anionic dyes, 87% of industrial leachate, 68% of textile effluents, and 95% of laundrette effluents in short periods of time ranging from 0.25 to 4 hours. Finally, this research found that Fenton oxidation procedures may be employed to remediate industrial wastewater.