Simulation of landfill leachate treatment using electro-Fenton technique

The operating parameters in the electro-Fenton process were simulated using computational fluid dynamics (CFD). The effects of H₂O₂/Fe²⁺ molar ratio, current density, pH and reaction time were numerically investigated. The results were compared with the experimental data. The simulated data showed that maximum chemical oxygen demand (COD) removal was around 91.52% at pH of 3.27, H₂O₂/Fe²⁺ molar ratio of 1.16, current density of 59.29 mA/cm² and reaction time of 41.7 min while the experimental data obtained from the literature showed a maximum COD removal (94.7%) at pH of 3, H₂O₂/Fe²⁺ molar ratio of 1, current density of 49 mA/cm² and reaction time of 43 min.