Preparation CaO/MgO/Fe3O4 magnetite catalyst and catalytic test for biodiesel production
Widayat Widayat, Hantoro Satriadi, Prambudi Widi Setyojati, Dimas Shihab, Luqman Buchori, Hadiyanto Hadiyanto, Faustina Alda Nurushofa
Abstract
Biodiesel is a promising renewable fuel with lower emissions and environmental friendliness. This study investigates the potential of a CaO/MgO/Fe3O4 nanomagnetic catalyst synthesized from dolomite and iron sand for biodiesel production from waste cooking oil. The catalyst was characterized using XRD, SEM, and PSA techniques. The influence of catalyst loading, Fe3O4:CaO/MgO mass ratio, and calcination temperature on biodiesel yield was investigated. The optimal reaction conditions were found to be 1% w/w catalyst loading, Fe3O4:CaO/MgO weight ratio of 1:7.5 w/w, and 1000°C calcination temperature, resulting in a 95.640% yield. The produced biodiesel met the quality standards for density and viscosity. This work demonstrates the effectiveness of CaO/MgO/Fe3O4 nanomagnetic catalysts for sustainable biodiesel production from waste feedstock, offering a promising approach for waste management and cleaner fuel alternatives.