Abstract
Antioxidants are additives for the prevention of the degradation of biofuels. This study evaluated the oxidative stability of B100 biodiesel from soybean oil with the addition of three synthetic antioxidants, butylhydroxyanisole (BHA), tertbutyl-hydroquinone (TBHQ) and butylated hydroxytoluene (BHT), either pure or mixed, according to the simplex–centroid mixture design. The obtained kinetic parameters indicated that the addition of the three pure antioxidants and a ternary mixture of the antioxidants resulted in an induction period that was greater than that of the control sample. Furthermore, based on the induction period (ip), the antioxidant BHT was the most efficient in preventing the oxidation of the B100 biodiesel used.
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