Production of biodiesel from restaurant waste frying oils using methoxide as catalyst

Najme Masihi¹ Nadali Alavi²

1) professor of departement environmental health engineering,School of public health and safety,shahid beheshti university of medical
2) Master of sciences environmental health engineering,School of public health and safety,shahid beheshti university of medical

محل انتشار : کنفرانس بین المللی روند های نو در مهندسی، علوم و تکنولوژی(etest2020.com)
Abstract :
Abstract The use of fossil fuels as energy sources has become problematic due to the limitation of these resources as well as the diffusion and accumulation of greenhouse gases in the environment. Given these issues, therefore, it is imperative to strengthen global strategies for energy security and reduce carbon dioxide emissions from these sources, including the use of clean fossil fuels and renewable energies. Biodiesel is a viable alternative to fossil fuels that can be renewed and locally produced. The purpose of this study was to produce biodiesel from restaurant waste frying oil in the presence of methoxide.The transesterification reaction was carried out under different reaction conditions such as methanol/WCO molar ratio from 3:1 to 9:1, catalyst dosage from .25 to .75 wt%, and reaction time from 20 min to 40 min. The biodiesel yield was calculated using amount of produced methyl ester based consumed oil at first reaction. Maximum biodiesel yield of 92.41 ± .77% has been observed at optimum reaction parameters as oil to methanol molar ratio of 1:6, catalyst loading of .5% by weight and reaction time of 30 min. The biodiesel production using waste cooking oil was effectively investigated using methoxide as homogeneous catalyst. The methoxide was found to be an efficient catalyst for the transesterification.
Keywords : Keywords: Biodiesel production , Used cooking oil, Transesterification, Catalyst