Eggshell Waste as a Potential Catalyst Support for Fe203/CaCO3 in Methylene Blue Degradation Process
Keywords:
AOP, degradation, eggshell, fenton, methyleneAbstract
Advanced Oxidation Processes (AOPs) are a promising advanced oxidation process to degrade waste containing aromatic compounds, pesticides, and oil. In this study, the AOP process with the phantom method was used which used hydrogen peroxide as an oxidizing agent and iron salt as a catalyst. This method has been widely proven as a method for treating various types of water pollutants, one of which is methylene blue. In this study, a heterogeneous catalyst in the form of a CaCO3 composite derived from chicken eggshell waste and Fe2O3 from Fe (NO3)3. 9H2O with a variation of 1%, 2%, and 3% Fe loading using the wet impregnation method. The wet impregnation method was carried out by mixing CaCO3 and Fe (NO3)3. 9H2O using a magnetic stirrer for 8 hours at room temperature. After that the sample is filtered and oven for 1 hour at a temperature of 1200C. Then the sample that has been in the oven is calcined at a temperature of 5000C for 3 hours. Testing of the catalyst was carried out by FTIR, XRD, visual test, and UV-Vis. Each test uses a catalyst mass of 0.1 grams in the FTIR and XRD tests. Meanwhile, 0.25 grams of catalyst are needed for each variable of Fe loading and 20 ppm of methylene blue is needed with a volume of 100 ml visual and UV-Vis testing, visual and UV-Vis testing is carried out in dark conditions. In this study, the catalyst sample with a concentration of 3% Fe loading showed the most optimum results with 24% degradation of methylene blue in the 60th minute and 38% at the 120th minute.
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