APPLICATION OF CENTRAL COMPOSITE ROTATIONAL DELINEATION (CCRD) IN THE STUDY OF BIODIESEL PROPERTIES

M. K. Moro, D. Andreatta, B. C. Oliveira, R. M. Bimbato, G. Simonelli

Abstract


In Brazil, biodiesel is produced from vegetable oils or fats. In this context, tallow is a raw material that commonly is used in the production of biodiesel due to its availability at a low cost. Despite of its advantages, biodiesel from tallow may cause plugging of filters in cars during cold seasons. A Composite Central Rotational Design of three independent variables (percentage of beef tallow, molar amount of methyl alcohol, and percent of KOH) was used to evaluate acid number, kinematic viscosity at 40 °C, density at 20 °C, and cold filter plugging point of the biodiesel produced by alkaline transesterification of different proportions of soybean oil and beef tallow. The results show that while the acid value was not affected by the independent variables, the percentage of beef tallow linearly affected density and kinematic viscosity. The biodiesel produced met ANP specifications, except for the cold filter plugging point in certain regions and during the coldest seasons in Brazil.

Keywords


experiment design; biodiesel quality; beef tallow; ANP specifications; cold filter plugging point

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DOI: http://dx.doi.org/10.5419/bjpg2017-0016