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Ajayi, O. A.
Department of Chemical Engineering, Ahmadu Bello University, Zaria
Dabai, F. N.
Department of Chemical Engineering, Ahmadu Bello University, Zaria
Eletta, O. A.
Department of Chemical Engineering, University of Ilorin, Ilorin
Yusuff, A. S.
Department of Chemical and Petroleum Engineering, Afe-Babalola University, Ado-Ekiti
Jisieike, I. C.
Department of Chemical and Petroleum Engineering, Afe-Babalola University, Ado-Ekiti
ABSTRACT
The production of biodiesel from waste vegetable oil
using eggshell based catalyst was studied. The waste raw eggshell was
beneficiated by washing, to remove impurities, and drying in an oven at 1200C under static
condition for 6hr. Calcination was carried out at 9000C for 3hr,
after which it was washed, dried and recalcined at 6000C for 3hr. The
waste vegetable oil was characterized to determine the physiochemical
properties, such as viscosity 56.23mm2/sec, pH 5.16, free fatty acid
2.00 and specific gravity 0.9. Transesterification reaction was performed in an
oven using methanol to oil ratio of 6:1 at varying reaction temperature (60°C,
65°C, and 70°C), reaction time (1hr, 2hr, and 3hr) and catalyst weight (1wt%,
3wt%, 5wt%, 7wt%, 9wt%). The highest biodiesel yield was found to be 77%, for
methanol oil ratio of 6:1, temperature of 600C, and reaction time of
2 hours. X-Ray Diffratograph (XRD), X-Ray Fluorescence (XRF), and Scanning
Electron Microscope (SEM) analytical methods were used to characterize the
catalysts, while biodiesel formation was confirmed using Fourier Transform
Infra-Red (FTIR) and Gas Chromatograph Mass Spectrometer (GCMS) analyses.
Keywords: Biodiesel; eggshell; calcium oxide; waste vegetable oil
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Published
Sunday, December 31, 2017
Issue
Vol. 3 No. 2, DEC 2017
Article Section
GENERAL
The contents of the articles are the sole opinion of the author(s) and not of UJET.
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