Regeneration of Engine Used Oils by Solvent Extraction

Azad S. Sadraddin; Jalal A. Haji

doi:10.24996/ijs.2022.63.12.3

Authors

Azad S. Sadraddin Chemistry Department, College of Education, Salahaddin University-Arbil, Arbil, Iraq https://orcid.org/0000-0002-1054-7363
Jalal A. Haji Chemistry Department, College of Education, Salahaddin University-Arbil, Arbil, Iraq

DOI:

https://doi.org/10.24996/ijs.2022.63.12.3

Keywords:

used oil, regeneration, solvent extraction, solvent-oil ratio, extraction

Abstract

The regeneration of used oil is one of the essential processes for economical, industrial and environmental targets. Used oil is rich of hydrocarbons, metals (such as: aluminium, chromium, copper, iron, lead, manganese, nickel, silicon and tin), gasoline, water and antifreeze. Due to the high increasing rate of the number of cars, there is a huge quantity of used oil. In this study, different brands of used oil were involved in extraction and adsorption processes as a regeneration process of these used oils. The optimum conditions were determined such as solvents composition, solvent: oil ratio, KOH concentration and temperature. The solvent mixture of 40% of petroleum ether, 11% of 1-butanol and 4% of 2-propanol has shown the best results in removing sludge. The 3:1 (solvent: oil) ratio may be considered as the best ratio practically and economically.