Common methods employed to reduce the viscosity of vegetable oils include blending with diesel [11], micro-emulsions [12], thermal cracking [13], and transesterification [14].
Transesterification is a most common [15] and well established chemical reaction in which a primary alcohol reacts with the triglycerides of fatty acids (vegetable oil) in presence of a catalyst to form glycerol and esters [10,16–18].