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Caracterização de resíduo sólido formado em biodiesel de sebo bovino

2012; Brazilian Chemical Society; Volume: 35; Issue: 10 Linguagem: Inglês

10.1590/s0100-40422012001000002

1678-7064

Valter J. Fernandes, Antonio de Sousa Araujo, Fábio da Silva Vinhado, Paulo Roberto Pivesso,

Biodiesel Production and Applications

BEEF TALLOW BIODIESEL.The nature of the solid residue formed in beef tallow biodiesel from two commercial producers in Brazil was determined by comparative analytical techniques, namely, gas chromatography with flame ionization detector (GC-FID) and thermogravimetry (TG).Pure monopalmitin and monostearin were used as reference standards for both methodologies.Analyses were carried out before and after filtration of the solids formed, which allowed the observation that the formation of precipitate reduced the levels of monoglycerides in the beef tallow biodiesel.The chromatographic and thermogravimetric results confirmed the nature of the residue as saturated monoglycerides, predominantly monostearin and monopalmitin.