Refining and Characterization of Car Engine Used / Unused Lubricating Oil


  • Sameera Razi Khan Federal Urdu University, Gulshan-e-Iqbal campus
  • Summyia Masood university of karachi
  • Maria Ashfaq university of Karachi
  • Rozina khattak Shaheed Benazir Bhutto Women University, University Avenue, Charsadda Road, Peshawar.
  • Ramsha Khan Federal Urdu University


Present research work deals with refining of car engine used lubricating oil into base oil by solvent extraction using hexane and ethyl acetate. The extracted oil was further diluted by making various solvents to extract oil ratios, to determine the physiochemical parameters such as acid values, viscosity, specific gravity and refractive index. Percent sludge removal (PSR) and percent oil loss (POL) was calculated for determining the performance of the extraction process and quality of re-refined oil. Fourier Transform InfraRed (FTIR) analysis has also been done to study the changes in used and unused car engine lubricating oil.

Author Biographies

Sameera Razi Khan, Federal Urdu University, Gulshan-e-Iqbal campus

Department of Chemistry

Assistant Professor

Summyia Masood, university of karachi

Department of Chemistry

Assistant Professor

Maria Ashfaq, university of Karachi

Department of Chemistry

Assistant Professor

Rozina khattak, Shaheed Benazir Bhutto Women University, University Avenue, Charsadda Road, Peshawar.

Department of Chemistry

Assistant Professor

Ramsha Khan, Federal Urdu University

Department of Chemistry



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Sciences (Chemistry)