Methanolysis of Gmelina Seed Oil to Biodiesel with KNO3 Activated MgO-ZnO Composite Catalyst
Abstract
The present study juxtaposes for the first time the heterogeneous methanolysis of gmelina oil over KNO3 activated MgO-ZnO with a NaOH base methanolysis for biodiesel production. The conditions for biodiesel production such as temperature, reaction time, NaOH (or KNO3 dose) and methanol-gmelina oil ratio were optimised. The 4%w/w KNO3 activated MgO-ZnO afforded high biodiesel yield (71.5 %) at 65oC predominantly consisting of C13-C25 cuts of linear fatty acid methyl esters (FAME). This heterogeneous catalyst was characterized using X-ray diffraction (XRD), energy dispersive X-ray (EDX) analyser, scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR). Gas-chromatography-mass spectrometry (GC-MS) revealed the selectivity to petroselinic acid methyl ester. The fuel properties of the biodiesel and its blends were consistent with standards. Relatively, the NaOH process yielded higher biodiesel (96.8%) at 60oC, 90 min, 1.2 % NaOH and 9:1 methanol-oil ratio.
Keywords
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References
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Details
Primary Language
English
Subjects
Chemical Engineering
Journal Section
Research Article
Publication Date
October 20, 2019
Submission Date
December 3, 2018
Acceptance Date
July 30, 2019
Published in Issue
Year 2019 Volume: 6 Number: 3
