The Physical Properties of Biodiesel-Diesel Fuel Produced via Transesterification Process from Different Oil Sources

Biodiesel is one of the sources of renewable fuel. Due to increasing environmental pollution, global warming caused by fossil fuels and limited fossil fuel resources, its production has significantly increased during the last decades. In addition, low price renewable sources have been wisely used to produce biodiesel. Herein, biodiesel is produced from edible oil wastes, such as goat fat, chicken fat and palm kernel-derived oil using the transesterification process. The produced biodiesel is mixed with different ratios of petroleum diesel to improve the physical properties of the produced biodiesel, such as flash point, kinematic viscosity, density, cloud point and pour point. The physical properties were measured according to the ASTM D6751 standard. The obtained results show that some of the properties of final biodiesel, such as density, viscosity and flash point are improved with the addition of biodiesel to the diesel fuel. Among oil resources, the oil produced from goat fat had a better flash point where B100, B80, B60 and B50 had a flash point in the standard range. The other properties, such as pour point and cloud point were increased with the higher proportion of the biodiesel in the mixture. This causes a bad effect on the consumption of fuel which cannot be used in cold weather. Generally, adding biodiesel to diesel enhances the fuel properties.