Refining, Toxicology Study and Biodiesel Potentials of Used Vegetable Oils

Olaoluwa Ruth Obisesan¹, Abolanle Saheed Adekunle^1, , John Adekunle Oyedele Oyekunle^1, , Efere Martins Obuotor², Olatunji Seyi Ojo¹, Adedayo Muideen Sanni¹, Muib Adewale Akinyemi¹ and Oyedare Mayowa Adesina¹

¹Department of Chemistry, Obafemi Awolowo University, PMB 013, Ile-Ife, Nigeria

²Department of Biochemistry and Molecular Biology, Obafemi Awolowo University, Ile-Ife, Nigeria

Cite this paper:
Olaoluwa Ruth Obisesan, Abolanle Saheed Adekunle, John Adekunle Oyedele Oyekunle, Efere Martins Obuotor, Olatunji Seyi Ojo, Adedayo Muideen Sanni, Muib Adewale Akinyemi and Oyedare Mayowa Adesina. Refining, Toxicology Study and Biodiesel Potentials of Used Vegetable Oils. American Journal of Food Science and Technology. 2017; 5(3):78-88. doi: 10.12691/ajfst-5-3-2

Abstract

This study examined the effect of refining process on physicochemical properties of used vegetable oils from two restaurants in Ile-Ife Nigeria, and their biodiesel potential using biological and chemical based heterogeneous catalyst. The refining stages are degumming, alkaline treatment and bleaching. Physicochemical properties of both refined and the used oils were carried out using the AOAC methods. Transesterification of biodiesel was carried out using KOH and plantain peel as the catalyst, while the fuel properties of the biodiesel obtained were determined using ASTM methods. Results showed that the biodiesels obtained from the used vegetable oils using environmental friendly and readily available catalyst, were better substitute with cheap cost of production compared with biodiesel fuel produced from normal vegetable oils. Also, the refining processes showed that the refined oils have gained better industrial application with improved physicochemical properties after each refining stages.

Keywords:
transesterification heterogeneous catalyst bleaching alkaline treatment degumming

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