SEDL / STP / STP1477-EB / STP49364S

Characterization of Density of Biodiesel from Soybean, Sunflower, Canola, and Beef Tallow in Relation to Temperature, Using a Digital Density Meter with a Metrological Point of View

Filho, D. M. E. Santo
Inmetro—Instituto Nacional de Metrologia, Normalização e Qualidade IndustrialUFF—Universidade Federal Fluminense, Duque de CaxiasRio de Janeiro, R.J.

de Abreu, F. L. B.
Inmetro—Instituto Nacional de Metrologia, Normalização e Qualidade IndustrialUFF—Universidade Federal Fluminense, Duque de CaxiasRio de Janeiro, R.J.

Pereira, R. G.
UFF—Universidade Federal Fluminense, Rio de Janeiro,

Siqueira, J. R. R.
Inmetro—Instituto Nacional de Metrologia, Normalização e Qualidade Industrial, Duque de Caxias, R.J.

dos Santos Júnior, J. J. P.
Inmetro—Instituto Nacional de Metrologia, Normalização e Qualidade Industrial, Duque de Caxias, R.J.

Daroda, R. J.
Inmetro—Instituto Nacional de Metrologia, Normalização e Qualidade Industrial, Duque de Caxias, R.J.

Pages: 8    Published: Jan 2011

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Abstract

In this article we study the behavior of biodiesel density from soybean oil, sunflower oil, canola oil, and beef tallow, the last one transesterified with ethanol and the others with methanol in relation to temperature with a metrological point of view. These quantities were measured with a digital density meter, one of the Brazilian density standards, in a temperature range between 15 and 40°C. Measurement uncertainty was calculated. The behavior of density is analyzed considering the estimated uncertainty. The density from all the samples investigated shows a linear behavior with respect to temperature.