Thermo-oxidative decomposition of biodiesel samples obtained from mixtures of beef tallow, soybean oil, and babassu oil

Biodiesel can be obtained from various fatty acid sources. Each raw material has a different chemical composition that leads to different properties. Owing to these properties, the mixture of different proportions of raw materials can lead to biodiesels with best features in relation to physicochemi...

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Bibliographic Details
Published in:Journal of thermal analysis and calorimetry 2011-11, Vol.106 (2), p.569-574
Main Authors: Teixeira, G. A. A., Maia, A. S., Rosenhaim, R., Santos, I. M. G., Souza, A. L., Souza, A. G., Queiroz, N.
Format: Article
Language:English
Subjects:
Analytical Chemistry
Beef
Biodiesel fuels
Biofuel production
Biological and medical sciences
Biomass energy
Biotechnology
Chemistry
Chemistry and Materials Science
Energy
Fatty acids
Fundamental and applied biological sciences. Psychology
Industrial applications and implications. Economical aspects
Inorganic Chemistry
Measurement Science and Instrumentation
Physical Chemistry
Polymer Sciences
Raw materials
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Summary:Biodiesel can be obtained from various fatty acid sources. Each raw material has a different chemical composition that leads to different properties. Owing to these properties, the mixture of different proportions of raw materials can lead to biodiesels with best features in relation to physicochemical parameters such as viscosity, oxidative stability and flow properties, generating a fuel whose characteristics meet the requirements of the current legislation of the Brazilian National Agency of Petroleum, Natural Gas and Biofuels (ANP). The objective of this study was to determine the physicochemical properties of biodiesel samples produced from mixtures of beef tallow, babassu oil, and soybean oil. The thermo-oxidative stability was evaluated using thermogravimetry (TG/DTG) and differential scanning calorimetry (DSC). The results showed that all samples were in accordance to the ANP specifications. The biodiesel obtained from a mixture containing 50% of babassu oil had lower values of pour point, cold filter plugging point, and freezing point. This biodiesel also showed a higher thermo-oxidative stability in synthetic air and in oxygen atmospheres.
ISSN:1388-6150
1588-2926
1572-8943
DOI:10.1007/s10973-011-1372-5