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  • 1 Universidade Federal da Paraíba, CCEN, DQ, Cidade Universitária, Campus I, João Pessoa, PB, 58059-900, Brazil
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Abstract

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.

  • 1. Jain, S, Sharma, MP. Stability of biodiesel and its blends: a review. Renew Sustain Energ. 2010;14:667678. .

  • 2. Veljkovic, VB, Stamenkovic, OS, Todorovic, ZB. Kinetics of sunflower oil methanolysis catalyzed by calcium oxide. Fuel. 2009;88:15541562. .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 3. Aryee, ANA, de Voort, FRV, Simpson, BK. FTIR determination of free fatty acids in fish oils destined for biodiesel production. Process Biochem. 2009;44:401405. .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 4. Atadashi, IM, Aroua, MK, Aziz, AA. High quality biodiesel and its diesel engine application: a review. Renew Sustain Energy Rev. 2010;14:19992008. .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 5. Lujaji, F, Bereczky, A, Janosi, L, Novak, Cs, Mbarawa, M. Cetane number and thermal properties of vegetable oil, biodiesel, 1-butanol and diesel blends. J Therm Anal Calorim. 2010;102:11751181. .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 6. Schaffel, SB, La Rovere, EL. The quest for eco-social efficiency in biofuels production in Brazil. J Clean Prod. 2010;18:16631670. .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 7. Costa, ACA, Pereira, N, Aranda, DAG. The situation of biofuels in Brazil: new generation technologies. Renew Sust Energ Rev. 2010;14:30413049. .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 8. Dunn, RO. Antioxidants for improving storage stability of biodiesel. Biofuels Bioprod Bior Biofpr. 2008;2:304318. .

  • 9. Cunha, ME, Krause, LC, Moraes, MSA, Faccini, CS, Jacques, RA, Almeida, SR, Rodrigues, MRA, Car, EB. Beef tallow biodiesel produced in a pilot scale. Fuel Process Technol. 2009;90:570575. .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 10. Santos, NA, Santos, JRJ, Sinfronio, FSM, Bicudo, TC, Santos, IMG, Antoniosi, NR, Fernandes, VJ, Souza, AG. Thermo-oxidative stability and cold flow properties of babassu biodiesel by PDSC and TMDSC techniques. J Therm Anal Calorim. 2009;97:611614. .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 11. Taravus, S, Temur, H, Yartasi, A. Alkali-catalyzed biodiesel production from mixtures of sunflower oil and beef tallow. Energ Fuel. 2009;23:41124115. .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 12. Dias, JM, Alvim-Ferraz, MCM, Almeida, MF. Mixtures of vegetable oils and animal fat for biodiesel production: influence on product composition and quality. Energ Fuel. 2008;22:38893893. .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 13. Teixeira, LSG, Couto, MB, Souza, GS, Andrade Filho, M, Assis, JCR, Guimarães, PRB, Pontes, LAM, Almeida, SQ, Teixeira, JSR. Characterization of beef tallow biodiesel and their mixtures with soybean biodiesel and mineral diesel fuel. Biomass Bioenerg. 2010;34:438441. .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 14. Candeia, RA, Freitas, JCO, Souza, MAF, Conceição, MM, Santos, IM, Soledade, LEB, Souza, AG. Thermal and rheological behavior of diesel and methanol biodiesel blends. J Therm Anal Calorim. 2007;87:653656. .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 15. Santos, NA, Tavares, MLA, Rosenhaim, R, Silva, FC, JV Fernandes Jr, Garcia, IM, Souza, AG. Thermogravimetric and calorimetric evaluation of babassu biodiesel obtained by the methanol route. J Therm Anal Calorim. 2007;87:649652. .

    • Crossref
    • Search Google Scholar
    • Export Citation
  • 16. SMAOFD - Standard methods for the analysis of oils, fats and derivatives. In: International Union of Pure and Applied Chemistry, Method 2507. 7th ed. Boston: IUPAC; 1987.

    • Search Google Scholar
    • Export Citation
  • 17. ANP – National agency of petrol, natural gas and biofuels. Resolução nº. 07, de 19 de março de 2008. http://www.anp.gov.br. Accessed 10 Jan 2010. (in Portuguese).

    • Search Google Scholar
    • Export Citation