Emission characteristics of influence of nano-additives doped biofuel in a diesel engine.

The present study was conducted using the novel catalyst for lowering the exhaust emissions of diesel engine powered with biofuel. Using transesterification, biodiesel is extracted from raw Prosopis juliflora oil. The catalysts were the mixture of CeO₂ and MWCNT (Multi-walled carbon nanotubes) at concentrations of 50ppm and 100ppm. The current experimentation purely deals with engine operation at constant speed of 1500rpm at five engine loads namely 0%, 25%, 50%, 75%, and 100% respectively. B20+CeO₂MWCNT50 is prepared by blending 25ppm CeO₂ and 25ppm MWCNT in B20 (20% Prosopis juliflora biodiesel+80% diesel) while B20+CeO₂MWCNT100 is prepared by blending 50ppm CeO₂ and 50ppm MWCNT in B20 (20% Prosopis juliflora biodiesel+80% diesel). Results indicate that the improved surface area to volume ratio of nano-additives resulted in significant drop in emission parameters. HC, CO, NOx and smoke emissions of nano blended biodiesel is comparatively lower than neat biodiesel. [ABSTRACT FROM AUTHOR]