TITELLS:CYCLING OF USED LUBRICATING OIL IN LABORATORY

Abstract

The amount of used lubricating oil that is collected or dumped in our country is very large, because of the increase in population of automobiles and industrial facilities. The used lubricating motor oil is a highly pollutant material that requires responsible management. It may cause damage to the environment, if it’s being disposed of appropriately. In this study many tests carried out in the laboratory in order to find out an appropriate process to recycle used lubricating engine oil collected from a car wash station. By applying appropriate treatment: washing, settling, solvent extraction and distillation for solvent recovery, adsorption by bentonites, the base oil was obtained. The refined base oil was then characterized and compared with the virgin oil. The type of solvent used and the mixing ratio applied for different samples has shown significant effects on the yield of recovered oil. MEK +gasoline solvent with mixing ratio of 6:1 gave the best result. A Maximum yield of 92,1% was obtained using MEK+gasoline binary solvent and mixing ratio of 6:1, minimum recovery yield is 81,62% was obtained using propanol and 6:1 mixing ratio. A good quantity of The recycled engine oil obtained at the end of the process is ready to be used again or blended with other virgin base oils.