Journal of Petroleum and Gas Engineering
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Article Number - F9F2DD03170

Vol.2(2), pp. 12-19 , February 2011

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ISSN: 2141-2677   Downloaded: 142


A comparative study of recycling of used lubrication Oils using distillation, acid and activated charcoal with clay methods

Udonne J. D.

Department of Chemical and Polymer Engineering, Lagos State University, Lagos, Nigeria


Accepted: 13 December 2010      Published: 28 February 2011

Copyright © 2011 Author(s) retain the copyright of this article.

Author(s) agree that this article remain permanently open access under the terms of the

Creative Commons Attribution License 4.0 International License



Lubricating oils are viscous liquids used for lubricating moving part of engines and machines. Since lubricating oils are obtained from petroleum – a finite product, and with dwindling production from world oil reserves, the need arises more than ever, to recycle used lubricating oils. Accordingly, this research effort focuses on comparative study of four methods of recycling of used lubrication oils: acid/clay treatment, distillation/clay, acid treatment and activated charcoal/clay treatment methods. Test carried out on the recycled lubrication oil include: flash point, pour point, specific gravity, metal contents, viscosity and sulphur contents. The results from the tests showed that, viscosity increased from 25.5 for used lube oil to 86.2 for distillation, 89.10 for acid/clay treatment and 80.5 is for activated/clay treatment. This is compared with 92.8 cs for fresh lube oil. Other results from the different tests showed varied degrees of improvement with the best results obtained using the acid/clay treatment.


Key words: Lubrication, refining, environmental pollution, viscosity

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