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Abstract
The depletion of fossil fuel forces the world to look for alternative ways for energy production. The most important alternative method is biofuels production. Biofuels are a type of fuel produced from natural resources such as agriculture, agriculture wastes, used cooking oil and biological creatures. Production of biodiesel from non edible vegetable oils is done through a chemical reaction called transesterification reaction. The oil used in this work is waste cooking oil which cannot be recycled or valid to human use. Transesterification is a chemical reaction at which the organic group (alkyl) of an alcohol is substituted with the organic group of a triglyceride producing fatty acid alkyl ester and glycerol. Transesterification reaction is catalyzed by addition of a base catalyst