Thermal behavior of diesel/biodiesel blends of biodiesel obtained from buriti oil - doi: 10.4025/actascitechnol.v34i2.12797

Autores

  • Rômulo Davi Albuquerque Andrade Instituto Federal de Educação Tecnológica de Rio Verde Autor
  • Ellen Pozzebom Instituto Federal de Educação Tecnológica de Rio Verde Autor
  • Elaine Alves Faria Instituto Federal de Educação Tecnológica de Rio Verde Autor
  • Francisco Dantas Filho Universidade de Brasí­lia Autor
  • Paulo Anselmo Ziani Suarez Universidade de Brasí­lia Autor
  • Alexandre Gustavo Soares do Prado Universidade de Brasí­lia Autor

DOI:

https://doi.org/10.4025/actascitechnol.v34i2.12797

Palavras-chave:

transesterification, vegetable oils, thermogravimetric evaluation

Resumo

Biodiesel has been obtained from methanolysis of buriti oil. This biodiesel was added in fossil diesel in order to obtain diesel/biodiesel blends. Thermal analysis of blends were carried on 30-600oC range at rate of 10oC min.-1. Kinetic parameters such as activation energy (Ea), pre-exponential factor (A), Gibbs energy (Δ≠G), enthalpy (Δ≠H) and entropy (Δ≠S) of activation were determined by using Coats - Redfern equation. The Ea, Δ≠H and Δ≠G values presented a linear increase with biodiesel amount added in blends. The heat of combustion of diesel/biodiesel blends was determined, and it was observed that the heat of combustion decreased with the addition of biodiesel in diesel/biodiesel blends.

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Publicado

2011-11-09

Edição

Seção

Quí­mica

Como Citar

Thermal behavior of diesel/biodiesel blends of biodiesel obtained from buriti oil - doi: 10.4025/actascitechnol.v34i2.12797. (2011). Acta Scientiarum. Technology, 34(2), 243-248. https://doi.org/10.4025/actascitechnol.v34i2.12797

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