Zinc oxide nanoparticles to the synthesis of high-value added biofuels from waste cooking oil methyl ester blends

Abstract

In this study, nano zinc oxide particles with Tungsto phosphoric acid is used to catalyse the trans-esterification of used cooking oil biodiesel. The trans-esterification reaction parameters were optimized based on the trials. After adjusting the reaction parameters, an optimal set of parameters was found, with a maximum conversion rate of 94 % of waste cooking oil to biodiesel. For engine testing and analysis, synthetic biodiesel is employed as a blend of B100, B20 and B10. The susceptibility to bio-deterioration was assessed by carrying out the studies on their storage stability. The fuel properties for prepared fuel blends are tested within the ASTM standards. XRD profile of the prepared additives shown the formation of ZnO Nano particles is evident. Increase in biodiesel concentration in the blend has increased the peroxide values. Nano zinc oxide particles with Tungsto phosphoric acid catalyzed biodiesel blends lowered the peroxide values hence increase in the stability.