Decomposition of methyl orange by Heterogeneous Electro-Fenton technology using ferrimagnetic oxide on activated carbon support as the catalyst

The treatment of methyl orange in this study was carried out by application of Electro-Fenton process using Fe3O4/AC catalyst and electrode cells in an area of 100 cm2. The efficiency of removing methyl orange was 98.86% with optimal conditions including: pH of solution 3.0, potential difference between two electrodes 15 V, initial concentration of methyl orange 20 ppm, catalyst dosage 0.8 g/L. The synthesized material has the ability to be reused, achieving the treatment efficiency of 78.5% after 4 reuses. The experimental results showed the potential of application the heterogeneous Electro-Fenton process for treatment of persistent organic compounds.