Open AccessStudy of oxidation kinetics of B100 biodiesel from soybean and pig fat: activation energy determination.
Author(s) -
Diego Galvan,
Juliane Resges Orives,
Rodolfo Lopes Coppo,
Cezar Henrique Furtoso Rodrigues,
Kelly Roberta Spacino,
Jurandir Pereira Pinto,
Dionísio Borsato
Publication year - 2014
Publication title -
química nova
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.214
H-Index - 73
eISSN - 1678-7064
pISSN - 0100-4042
DOI - 10.5935/0100-4042.20140042
Subject(s) - kinetics , biodiesel , activation energy , chemistry , food science , pulp and paper industry , chemical engineering , environmental science , biochemistry , organic chemistry , physics , engineering , catalysis , quantum mechanics
The quality of biodiesel is extremely important for its commercialization and use; oxidation of biodiesel is a critical factor because it decreases the fuel storage time. A commercial biodiesel was mixed with synthetic antioxidants, according to a simplex-centroid experimental mixture design, and its stability was evaluated through induction period and activation energy. In all trials, addition of antioxidants increased activation energy in the mixtures containing tertiary butylhydroquinone (TBHQ). When a mixture containing 50% TBHQ and 50% butylated hydroxyanisole was used, synergistic effect was observed, and the major activation energy obtained was 104.43 kJ mol-1