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2. LIBERAÇÃO CONTROLADA DE PARAQUAT EM PARTÍCULAS DE QUITOSANA.

Author

Araújo dos Santos, Jeovana Maria, Neves de Oliveira, Patrícia, Ribeiro Aguiar, Ana Carolina, and Albuquerque Andrade, Rômulo Davi

Subjects
POISONS, PARAQUAT, ULTRAVIOLET-visible spectroscopy, CHITOSAN, BIOPOLYMERS, HERBICIDES, SUGARCANE
Abstract

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Published
2022

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

Author

Albuquerque Andrade, Rômulo Davi, Pozzebom, Ellen, Faria, Elaine Alves, Dantas Filho, Francisco, Suarez, Paulo Anselmo Ziani, and Prado, Alexandre Gustavo Soares do

Subjects
thermogravimetric evaluation, vegetable oils, Termodinamica quimica, transesterification
Abstract

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.

Published
2011

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