It is concluded that using a mixture of methanol and ethanol to produce biodiesel may enhance the settling rate of the glycerol. However, the settling rate of glycerol and the yield biodiesel produced from methanol-oil mixtures can be increased if some ethanol is added to the mixture.
One can conclude that using a mixture of methanol and ethanol alcohols to produce biodiesel may enhance the yield of biodiesel and settling rate of the glycerol.