Biodiesel production from used oil cooking

Biodiesel is an environment-friendly diesel fuel which is economically feasible and readily available. It can be used to replace petroleum diesel or can be blended together with petroleum diesel fuel in any percentage. Production of biodiesel was involved transesterification process that implicated the reaction between used cooking oil and methanol with aid of KOH. The reaction was carried out at 15 min, 30 min, 60 min, 90 min, and 120 min to evaluate the effect of reaction time on the yield of fatty acid methyl ester (FAME). The highest yield of FAME was obtained at reaction time 60 min. Besides that, the yield of fatty acid methyl ester was studied by changing the reaction temperature at 30°C, 60°C, 75°C, 90°C, and 120°C. The maximum yield of fatty acid methyl ester (FAME) was obtained at 60°C. All samples of biodiesel at different reaction time and temperature were contained high impurities of bounded glycerol due to the insufficient of purification techniques. Biodiesel was successfully reduced 39.2 percent opacities level of smoke released by diesel engine that performed with petroleum diesel. Biodiesel was less efficient in performance of engine when compared with diesel performance.