Otimização da síntese de biodiesel a partir do óleo das sementes de mamona e amendoim

Abstract

Focus on the study of the characteristics of biodiesel has proven to be an adequate tool for finding an optimal point in its production. In this sense, the right amount of reagents and the time required with the minimum possible waste are critical steps in the biodiesel production. These factors are important for industries seeking quantity and quality, employing analysis and tools to assess the best conditions for obtaining biodiesel. Thus, the aim of this work was to optimize the reaction conditions to obtain the methyl biodiesel from the mixture of both castor bean BRS Energia and peanuts BR1 seedoils, using an experimental design proposed by Brereton. The independent variables were temperature, catalyst, oil/alcohol ratio, reaction time and proportion of peanut/castor oil. For the first stage of this research, an experimental design with 4 variables (N = 4) and 5 factors (k = 5) was performed, totaling 16 results, in order to select the variables that significantly influence the optimization process of blend castor/peanut in the biodiesel production. The dependent variables were mass yield, saponification number, density and acid number. With the obtained results, it was found that all the variables were significant byusing Student's test (p<0.05), except the mass yield in the temperature effect.