Application of Solvent Extraction Process for Revivification of Used Lubricating Engine Oil
D. O. Araromi
Department of Chemical Engineering, Faculty of Engineering, Ladoke Akintola University of Technology, P.M.B. 4000, Ogbomoso, Nigeria
M. O. Aremu *
Department of Chemical Engineering, Faculty of Engineering, Ladoke Akintola University of Technology, P.M.B. 4000, Ogbomoso, Nigeria
O. O. Gbolahan
Department of Chemical Engineering, Faculty of Engineering, Ladoke Akintola University of Technology, P.M.B. 4000, Ogbomoso, Nigeria
*Author to whom correspondence should be addressed.
Abstract
In this work two single (ethanol and 1-butanol) and one composite (1-butanol-ethanol) solvents were used for refining Used Lubricating Engine Oil (ULEO) at temperatures 35ºC, 45ºC and 50ºC. The solvents performances were investigated at Solvent Oil Ratio (SOR) 1:1 to 7:1 using percentage oil yield as performance metric. The study revealed that 1-butanol produced the best performance for regenerating ULEO. The results of this study demonstrated the potential of 1-butanol-ethanol for regenerating ULEO.
Keywords: Regeneration, re-refining, extraction, used oil