Properties and use of Moringa oleifera biodiesel and diesel fuel blends in a multi-cylinder diesel engine

Researchers have recently attempted to discover alternative energy sources that are accessible, technically viable, economically feasible, and environmentally acceptable. This study aims to evaluate the physico-chemical properties of Moringa oleifera biodiesel and its 10% and 20% by-volume blends (B10 and B20) in comparison with diesel fuel (B0). The performance and emission of M. oleifera biodiesel and its blends in a multi-cylinder diesel engine were determined at various speeds and full load conditions. The properties of M. oleifera biodiesel and its blends complied with ASTM D6751 standards. Over the entire range of speeds, B10 and B20 fuels reduced brake power and increased brake specific fuel consumption compared with B0. In engine emissions, B10 and B20 fuels reduced carbon monoxide emission by 10.60% and 22.93% as well as hydrocarbon emission by 9.21% and 23.68%, but slightly increased nitric oxide emission by 8.46% and 18.56%, respectively, compared with B0. Therefore, M. oleifera is a potential feedstock for biodiesel production, and its blends B10 and B20 can be used as diesel fuel substitutes.

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