Transesterification, emission, and performance analysis of coconut oil biodiesel- alumina nanoparticles mixture in diesel engine

In order to improve its transesterification process, performance and emission parameters, nanoparticles are mixed to neat biodiesel. This work aims to investigate the cause of alumina nanoparticles on transesterification, emission and performance of coconut biodiesel. Two fuel samples are prepared by transesterification process with and without adding alumina nanoparticles. Experimental results revealed that the nitrogen oxide emission and smoke emission are reduced by 6% and 8% for coconut biodiesel by transesterification with adding alumina nanoparticles (CBD100A) when compared to coconut biodiesel by transesterification without alumina nanoparticles (CBD100). In addition, the introduction of alumina nanoparticles in coconut biodiesel during transesterification reduces the unburned hydrocarbon, carbon monoxide emissions considerably. Experimental results show that the CBD100A reduces fuel consumption which increases brake thermal efficiency.