Abstract

ABSTRACT Prosopis juliflora (PJF) is a non-edible feedstock and is mainly found in arid and semi-arid regions. This bio-oil extracted from PJF seeds and is converted into biodiesel with the help of the transesterification process. This work aims at investigating the performance and emissions of a diesel engine using the biodiesel extracted from the PJF plant seeds. Cerium oxide nanoparticles are used as an additive which acts as an oxygen donating catalyst and provides oxygen for combustion. The activation energy of cerium oxide acts to burn off carbon deposits within the engine cylinder at the wall temperature and prevents the deposition of non-polar compounds on the cylinder wall which resulted in reduced HC emissions. The exhaust gases were further treated by EGR to reduce NOx emissions. There is a considerable reduction in smoke and NOx emissions with the PJF seed oil as compared to Biodiesel at all exhaust gas recirculation process.

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