Role of The Concentration of Fe/C Catalysts on Heterogeneous Fenton Degradation Remazol Yellow FG

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Remazol Yellow FG is a thiazine dye widely used in textile industries. This compound is difficult to degrade naturally. One method that can be used for wastewater treatment is the Advanced Oxidation Process with heterogeneous Fenton reaction. The heterogeneous Fenton reaction mechanism uses H2O2 as an oxidizer and iron nanoparticles as a catalyst. One material that can be used as catalyst support for iron nanoparticles is activated carbon. Activated carbon can be modified as a catalyst support because it has a large surface area. Iron oxide (Fe2O3) is embedded in activated carbon through the process of impregnation and calcination at a temperature of 300°C. Fe2O3 loading varies 2%, 4%, and 6% of the total carbon mass. Fe/C catalysts were characterized by SEM and BET-BJH. The catalytic degradation reaction of Remazol Yellow FG was carried out by dissolving 200ml of Remazol Yellow FG at a concentration of 20ppm and adding 5ml of H2O2.The degradation results using 96 hours Fe/C catalyst for variations of concentration were analyzed using a UV-VIS spectrophotometer. Then the measurement of degradation for Fe2O3 concentration of 2%, 4%, 6% using the heterogeneous Fenton method resulted in the percent removal of 16.82%, 40.46%, 38.32%. Whereas using physical adsorption on each variable Fe2O3 concentration did not result in percent removal. Data shows that the degradation capacity of Remazol Yellow FG using heterogeneous Fenton reaction increases with increasing Fe2O3 concentration. This also proves that the heterogeneous Fenton method using the Fe/C catalyst is effective for the degradation of Remazol Yellow FG.