Volume 59, Issue 325, January 2023

Evaluation of some rheological properties of Jatropha curcas l. Seed oil necessary in overcoming energy crisis problem

Egbe EW, Tulagha I, Tariebi K

Department of Agricultural and Environmental Engineering, Faculty of Engineering, Niger Delta University, Wilberforce Island Amassoma, Bayelsa State, Nigeria

ABSTRACT

This research was carried out to investigate the rheological properties of Jatropha Curcas L. seed oil. The parameters studied were the dynamic viscosity of the oil and the shear stress at different shear rate and temperatures. The dynamic viscosity was measured to be 151.8cp to 98.8cp at 6rpm, 82.0cp to 51.9cp at 12rpm, 42.2cp to 22.9cp at 30rpm and 25.3cp to 14.9cp at 60rpm all at varying temperatures of 30oC to 70oC using NDJ-S5 viscometer. The shear stresses obtained ranged from 91.8 N/m2 to 59.28 (N/m2) at varying temperatures ranging from 30oC to 70oC at 10oC intervals, and were dependent on the shear rates. The results showed that viscosity decreased with an increase in temperature. Power law model was used to describe the viscosity to shear stress relationship and the flow behavior index (n) obtained which were closed to one indicated that Jatropha Curcas L. seed oil exhibited a Newtonian behavior. The results can be used to predict the design texture, storage and flow processes of Jatropha Curcas L. seed oil which is necessary overcoming the energy crisis issue and limiting environmental changes.

Discovery, 2023, 59, e1d1001

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Published: January 2023