RECYCLING OF USED LUBRICATING ENGINE OIL BY A SOLVENT EXTRACTION PROCESS

Automotive lubricating oil is a high pollutant that needs significant management and accountability from the community and government. These oils in soil or water currents, such as sewage, can harm the environment. Groundwater and soil may become polluted by this. Lubricant costs are lowered by recycling these pollutants into useful products. This is a creative way of treating waste and will have a huge effect on the environment as well. This will decrease air/water contamination and fresh raw materials as well and greenhouse gas emissions will be minimized by recycling. Refining therefore restores the substantial and chemical properties of lubricating oil, which is capable of reverting to the original and intended usage of the oil used for the production of mixed essential oils in lubricants, minimizing the use of virgin oils. To return to its original intended use, recycling reproduces the physical and chemical properties of lubricants. This article explores the refining of lubricating oil using the solvent process and vacuum distillation, by oil recycling technology. Using three types of solvents: 1-propanol, n-butanol, and ethanol, the laboratory experiment was based on a complete global design. The purpose of this document was to recycle engine oil and recover valuable products. Impurities were isolated by filtration and separation, then to recover useful products by solvent extraction. We m easured the specific gravity, density, viscosity, flash point, fire point, pour point, sulphate ash content, total base quantity, colour, residue of carbon, water content and compared the original oil. The kinematic and dynamic viscosity of recovered oil was found to be greater by different separation methods at lower temperatures.