Mehran University Research Journal of Engineering and Technology (Apr 2012)

Determining an Efficient Solvent Extraction Parameters for Re-Refining of Waste Lubricating Oils

  • Hassan Ali Durrani,
  • Muhammed Ibrahim Panhwar,
  • Rafique Akthar Kazi

Journal volume & issue
Vol. 31, no. 2
pp. 265 – 270

Abstract

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Re-refining of vehicle waste lubricating oil by solvent extraction is one of the efficient and cheapest methods. Three extracting solvents MEK (Methyl-Ethyl-Ketone), 1-butanol, 2-propanol were determined experimentally for their performance based on the parameters i.e. solvent type, solvent oil ratio and extraction temperature. From the experimental results it was observed the MEK performance was highest based on the lowest oil percent losses and highest sludge removal. Further, when temperature of extraction increased the oil losses percent also decreased. This is due to the solvent ability that dissolves the base oil in waste lubricating oil and determines the best SOR (Solvent Oil Ratio) and extraction temperatures.

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