Abstract
The sustainability of biodiesel adoption in diesel engines are dependent on its environmental friendliness relative to lower pollutant emissions. Biodiesel was produced from extracted Parinari polyandra oil via alkali catalyzed methanolysis. Performance and emission analysis of a diesel engine was conducted on a diesel engine, operated under different operating conditions, using varied Parinari polyandra biodiesel blends. Exhaust emissions, like total hydrocarbons, carbon dioxide, carbon monoxide, sulphur dioxide, and nitrogen oxides were measured. The biodiesel properties were found to be similar to fossil diesel. B10 was found to be the optimal blend in improving the engine performance in terms of speed, power and thermal efficiency. B30 demonstrated stable performance characteristics without any modification of the diesel engine. The exhaust emissions from biodiesel blends combustion were found to be lower than that of diesel, except nitrogen oxides. High percentage reduction of greenhouse gases, carbon monoxide and carbon dioxide, was recorded at 81.7% and 65.7%, respectively. The utilization of Parinari polyandra biodiesel for engine application was found to be a viable means of heightening adoption of sustainable biofuels and minimizing pollutant emissions from the combustion of fossil fuels.
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