Abstract
ABSTRACT Biodiesel as an alternative to fossil-based diesel has shown great promise but, sustainable feedstock source remains a challenge. Biodiesel produced from waste restaurant oil and Moringa oleifera had their thermo-physical and engine characteristics evaluated in a validated property prediction scheme and a 3.5-kW direct injection compression ignition engine. Results revealed that waste restaurant oil biodiesel with a relatively higher palmitate of 20% (saturated fatty acid methyl ester [FAME]) and oleic of 52.8% (unsaturated FAME) had a 5% higher brake thermal efficiency (BTE) at peak load, a 65% lower brake specific fuel consumption (BSFC) across the load spectrum and 5% to 10% lower brake specific carbon monoxide (BSCO) than Moringa biodiesel which had 6.5% palmitate and 72.2% oleic. Regarding brake specific NOx (BSNOX) emission, Moringa biodiesel showed a lower level of 6.2% across the full load spectrum.
Published Version
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