ABSORPTION AND EFFECT OF USED ENGINE OIL AS WOOD PRESERVATIVE

Samuel Olayinka OLANIRAN
Graduate Assistant - Federal University of Technology Akure, Department of Forestry and Wood Technology
E-mail: sampeak2006@yahoo.com

Babatola OLUFEMI
Assoc.Prof.Dr.Eng. - Federal University of Technology Akure, Department of Forestry and Wood Technology
E-mail: olufemibabatola@yahoo.com

Amos Olajide OLUYEGE
Prof.Dr. - Federal University of Technology Akure, Department of Forestry and Wood Technology
E-mail: amosoluyege@yahoo.com

Abstract: This study investigates the methods of improving the absorption of used engine oil by wood. Wooden samples of Gmelina arborea, Terminalia superba, and Ceiba pentandra were procured and sawn into wooden stakes of 35mm x 35mm x 220mm. The samples were weighed and divided into two sets. A set was incised and the other unincised. All the samples were oven dried at 103±20C, have their oven dried weights recorded and treated with spent engine oil using the hot treatment, cold soaking, and brushing methods. The treated samples were also exposed to termite attack. The result showed that the mean percentage absorption of the wood pre-treatment, (incision and un-incision) were 13.6% and 11.6% respectively. The result of the analysis for the mean absorption showed significant differences in the wood pre-treatment, methods of application and the absorption rate of the individual wood species. Incision of the wood samples increased their preservative uptake, while the anatomical structure of the species also had a significant effect on the rate of absorption. The ASTM rating showed that a measure of protection was provided by used engine oil and the hot treatment method gave the sufficient protection against termites.

Key words: wood preservation, used engine oil, absorption, incision, termites.

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