“…Biodiesel (BD) is an interesting alternative for diesel fuel obtained from renewable resources. The massive production of BD is achieved from the reaction between triglycerides (TG) from vegetable oils or animal fats with an alcohol, usually MeOH, in the presence of a catalyst , . Reaction products are methyl esters or BD, glycerol (GLY), soaps, rest of monoglycerides (MG), diglycerides (DG), triglycerides (TG), catalyst, water, and solvent , .…”