1. Aplicação do delineamento simplex-centroide no estudo da cinética da oxidação de biodiesel B100 em mistura com antioxidantes sintéticos
- Author
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Heverson Renan de Freitas, Carmen Luisa Barbosa Guedes, Ivanira Moreira, Dionísio Borsato, Kelly Roberta Spacino, Luiz Henrique Dall'Antonia, and Elaine Cristina Rodrigues Maia
- Subjects
Biodiesel ,Antioxidant ,food.ingredient ,Order of reaction ,medicine.medical_treatment ,food and beverages ,General Chemistry ,Soybean oil ,chemistry.chemical_compound ,antioxidants ,Reaction rate constant ,food ,chemistry ,medicine ,Butylated hydroxytoluene ,Organic chemistry ,Butylated hydroxyanisole ,Energy source ,design of mixing and biofuel ,Nuclear chemistry - Abstract
Antioxidants are an alternative to prevent or slow the degradation of the biofuel. In this study, it was evaluated the oxidative stability of B100 biodiesel from soybean oil in the presence of three commercial synthetic antioxidants, butylated hydroxyanisole (BHA), butylated hydroxytoluene (BHT) and tert-butylhydroquinone (TBHQ), pure or blended, from the experimental design of simplex-centroid mixture. The reaction order and rate constant were also calculated for all tests. The treatment containing pure TBHQ proved to be the most effective, proven by design, the optimum mix obtained and the rate constant. Binary and ternary mixtures containing TBHQ also showed appreciable antioxidant effect.
- Published
- 2010
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