The Place of Free Fatty Acids and Water in Biodiesel Production Process from Waste Oils

Biodiesel is a fuel that used in diesel engines produced from various renewable resources (plant, animal fats, waste oils, algae, etc.) and has high potential to be an alternative to standard diesel fuel. Using waste oils which cause significant damages when they are poured to environment should be preferred rather than using edible oils as a raw material in biodiesel production. This situation has a great importance for lowering the cost of biodiesel production, protecting of edible oil source and minimizing damages of waste oils on environment. In this study, importance of used vegetable and animal oils which is specified to be waste oil was evaluated in terms of environment and biodiesel production costs. In addition, it was investigated that, the effect of free fatty acids of waste oils (FFA) and water to the biodiesel production process in the literature.