RECYCLING AND CHARACTERIZATION OF SPENT ENGINE OIL USING TWO STAGES: SOLVENT EXTRACTION AND CLAY PERCOLATION TECHNIQUES

Spent lube oils are continuously generated from factories, vehicles and other machineries. Most spent engine oil contains harmful substances such as heavy metals indiscriminate disposal of this causes environmental pollution. The recycling has also become important due to its economic benefits. In study, solvent extraction clay percolation techniques were used recycle oil. specific gravity, flash point, viscosity, pour point total acid number. gravity was 0.8252-0.8937, viscosity at 40oC 79.37 130.12cSt while 100oC 8.50 15.64 cSt. points 121-214 oC -14 -9oC respectively. number 5.21 2.21 mgKOH/g for untreated oil, 0.43 0.315 treated the based 8.42 6.30 results suggested that method can be employed improve quality industrial applications well reducing pollution tospent