Model-free kinetics applied to volatilization of Brazilian sunflower oil, and its respective biodiesel

Model-free kinetic studies for volatilization of Brazilian sunflower oil and its respective biodiesel were carried out. The biodiesel was obtained by the methylic route using potassium hydroxide as catalyst. Both sunflower oil and biodiesel were characterized by physicochemical analyses, gas chromat...

Full description

Saved in:
Bibliographic Details
Published inThermochimica acta Vol. 506; no. 1; pp. 57 - 61
Main Authors Santos, Anne G.D., Araujo, Antonio S., Caldeira, Vinícius P.S., Fernandes, Valter J., Souza, Luiz D., Barros, Allan K.
Format Journal Article
LanguageEnglish
Dutch
Published Oxford Elsevier B.V 10.07.2010
Elsevier
Subjects
Biodiesel
Biofuel production
Biological and medical sciences
Biotechnology
Crude oil
Energy
Esters
Fat industries
Food industries
Fundamental and applied biological sciences. Psychology
Gas chromatography
Industrial applications and implications. Economical aspects
Kinetics
Model-free kinetics
Natural gas
Oil sunflower
Reaction kinetics
Specifications
Sunflower oil
Thermogravimetry
South America
Brazil
America
Kinetics
Biodiesel
Thermogravimetry
Oil sunflower
Model-free kinetics
Biofuel
Vegetable oil
Edible oil
Gas chromatography
Ester
Sunflower oil
Volatilization
Thermal analysis
Online AccessGet full text

Cover

More Information
Summary:Model-free kinetic studies for volatilization of Brazilian sunflower oil and its respective biodiesel were carried out. The biodiesel was obtained by the methylic route using potassium hydroxide as catalyst. Both sunflower oil and biodiesel were characterized by physicochemical analyses, gas chromatography, simulated distillation and thermogravimetry. The physicochemical properties indicated that the oil and biodiesel samples are in accordance with the specifications of the Brazilian National Agency of Petroleum, Natural Gas and Biofuels (ANP). Gas chromatography indicated that the biodiesel was obtained with a content of ester of ca. 97.35 wt%. The TG curves indicated that the temperatures for volatilization of biodiesel are lower than for sunflower oil, which is explained by their different compositions and properties. The value of the apparent activation energy for the volatilization process, as determinated by the Vyazovkin Method, was higher for sunflower oil than for biodiesel.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0040-6031
1872-762X
DOI:10.1016/j.tca.2010.04.015