Evaluation of Physicochemical and Biodegradability Properties of Selected Nigerian Non-Edible Oilseeds as Potential Cutting Fluids

Titilope John Jayeoye; Mary Bosede Ogundiran; David Abimbola Fadare; Adeniyi Adewale Ogunjobi

doi:10.52763/PJSIR.PHYS.SCI.58.3.2015.122.129

Titilope John Jayeoye Department of Chemistry, Federal University Ndufu Alike Ikwo, Abakaliki, Ebonyi State, Nigeria
Mary Bosede Ogundiran Analytical/Environmental Unit, Department of Chemistry, University of Ibadan, Nigeria
David Abimbola Fadare Department of Mechanical Engineering, University of Ibadan, Nigeria
Adeniyi Adewale Ogunjobi Department of Microbiology, University of Ibadan, Nigeria

DOI: https://doi.org/10.52763/PJSIR.PHYS.SCI.58.3.2015.122.129

Keywords: cutting fluids, vegetable oilseeds, biodegradability, bacterial inoculums

Abstract

This paper reports evaluation of physicochemical and biodegradability properties of selected non edible Nigerian oilseeds as a potential cutting fluid. Oil extraction process was carried on the oilseeds, with physicochemical parameters and biodegradability of the extracts were equally assessed. The established physicochemical parameters were percentage oil yield (5.58-61.8%), specific gravity (0.86-0.94), acid
value (2.89-18.2 mgKOH/g), iodine value (15.7-104 mg iodine/g), peroxide value (1.35-10.9 mg/g oil), saponification value (173-286 mg KOH/g) and viscosity (37.9-53.1centipoises), while biodegradability
ranged between (50.0-63.8%) in comparison with the mineral oil with values less than 20%. Based on this study, the oil extracts of Caesalpinia bonduc and Calophyllum inophyllum appeared to be the most suitable as potential cutting fluids for further formulation studies and machining trials.