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Journal of Renewable Energy
Volume 2013, Article ID 497530, 11 pages
http://dx.doi.org/10.1155/2013/497530
Research Article

FAME Storage Time in an Optimized Natural Antioxidant Mixture

Fuels Analyses and Research Laboratory (LPAC), Chemistry Department, State University of Londrina, P.O. Box 6001, 86051-990 Londrina, PR, Brazil

Received 23 August 2012; Revised 16 October 2012; Accepted 1 November 2012

Academic Editor: Kanit Krisnangkura

Copyright © 2013 Rodolfo Lopes Coppo et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The study of B100 biodiesel oxidation stability, and its conservation, is extremely important to control its quality, especially regarding storage. Many spices have shown antioxidant effect and are the targets of study. Knowing the oxidation process in greater detail allows a reliable storage period to be stipulated for the biodiesel without its degradation until the time of use. Results have shown that according to the accelerated stove method, the optimal mixture, composed of 100% of oregano extract, can confer a 535-day shelf life to biodiesel without evident oxidation. According to the results obtained by the Rancimat method, the ideal mixture consists of 100% rosemary, resulting in 483 days of storage. The application of the process variable showed that the accelerated stove method was more suitable to determine oxidative stability of biodiesel.