Determining the residual alcohol in biodiesel through its flash point
2011
Boog, Jorge Henrique Faber | Silveira, Eva Lúcia Cardoso | de Caland, Lilia Basílio | Tubino, Matthieu
A simple low cost method is proposed for the quantitative analysis of residual alcohol in biodiesel through determination of the flash point, with which it is correlated. Methyl ester biodiesels from vegetable oils such as corn, soy and sunflower were prepared. The ethyl ester was obtained from soy oil and methyl biodiesel was also synthesized from bovine fat. In all cases it became very evident that there is a direct correlation between the flash point and the residual alcohol content in the prepared biodiesel. Therefore this parameter can be used to directly determine the residual alcohol content of the product.
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