Res. Agr. Eng., 2018, 64(4):169-175 | DOI: 10.17221/99/2017-RAE

Viscosity and biodiesel characteristics of wild Canarium schweinfurthii Engl. fruit oilOriginal Paper

Ehiem James Chinaka*
Department of Agricultural and Bio-Resources Engineering, Michael Okpara University of Agriculture, Umudike, Umuahia, Abia State, Nigeria *Coresponding author: chinaka71@yahoo.com

The viscosity of two varieties of Canarium schweinfurthiiEngl. fruits oil (large and long) were studied at four different temperatures (30, 40, 50 and 60oC) and three shear rates (7.91, 15.82 and 39.54 s-1). SurgiFriend Medical (model NDJ-5S) viscometer was used to carry out the study. Biodiesel characteristics of the oil were also investigated. The results showed that variety had no effect (P < 0.05) on the viscosity of Canarium schweinfurthii Engl. fruit while temperature had especially at 50oC and above. The shear rate of 15.82 s-1 (12 rps) gave the lowest oil viscosity for both varieties. The oil from large fruit had the best temperature stability, low percentage viscosity (6.33%) variation and least activation energy (796.51 J.mol-1.K-1) while long variety had best biodiesel characteristic for safe handling. Temperature had no significant (P < 0.05) effect on the consistency coefficient (C) and flow behaviour index (n) of both varieties of Canarium schweinfurthii Engl. fruits oil. Besides, oil from both fruit varieties is Newtonian fluids.

Keywords: eonsistency; newtonian; behaviour index; biodiesel; activation energy

Published: December 31, 2018  Show citation

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Chinaka EJ. Viscosity and biodiesel characteristics of wild Canarium schweinfurthii Engl. fruit oil. Res. Agr. Eng. 2018;64(4):169-175. doi: 10.17221/99/2017-RAE.
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