This study focuses on the conversion of waste engine oil (WEO) into fuel using pyrolysis and fractional distillation as a sustainable approach to reduce environmental pollution and recover energy from hazardous waste. In this work, 2 liters of waste engine oil were subjected to pre-treatment processes, including filtration and moisture removal, followed by thermal treatment in a batch distillation system. The process involved gradual heating under atmospheric conditions, during which vaporized hydrocarbons were separated using a packed distillation column and condensed into liquid fuel. The first distillate was obtained at approximately 268°C, and a total of 190 mL of fuel was recovered at 352°C. The produced fuel was characterized by measuring key physical properties, including density (0.825 g/mL), API gravity (40.02), viscosity (0.378 cSt), flash point (46°C), and aniline point (67°C). The results indicate that the produced fuel exhibits properties comparable to light diesel fuel. However, deviations in viscosity and flash point suggest that further refining or blending may be required for practical engine applications. Despite the relatively low yield (9.5%) and system inefficiencies, the study demonstrates the technical feasibility of converting waste engine oil into valuable fuel. The findings highlight the importance of process optimization, improved equipment design, and the potential use of catalysts to enhance fuel recovery and quality. Overall, this research supports the role of waste-to-energy technologies in environmental protection and sustainable energy production. Keywords: Waste Engine Oil (WEO), Pyrolysis Process, Fractional Distillation, Waste-to-Energy Conversion, Fuel Recovery, Diesel-like Fuel, Hydrocarbon Cracking, Alternative Fuels, Fuel Characterization, Batch Distillation System, Energy Efficiency.
