Abstract
The high availability and low cost of animal fat have promoted industrial interest as a partial substitute for soybean oil for transesterification reaction product of synthesis, to reduce costs and maximize profits. This study aimed to apply experimental design for biodiesel production from a mixture of soybean oil, poultry fat, beef tallow and pork lard in order to obtain predictive equations to model the transesterification reaction yield, cloud point, pour point and oxidative stability, with sodium hydroxide and sodium methoxide as the process variables. The presence of animal fat in the formulations is an interesting factor, because although it did not present good results when isolated, with low oxidative stability (lard) and high cloud and pour points (beef tallow), it showed good performance and can be used as a partial substitute for soybean oil. DOI: 10.5935/1984-6835.20160060
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