Evaluación de la estabilidad oxidativa del biodiesel de jatropha (Jatropha curcas L.) mediante el uso de antioxidantes sintéticos y biodiesel de palma

Abstract

The purpose of this research was improving the oxidative stability of biodiesel from jatropha (Jatropha curcas L.) through the use of commercial synthetic antioxidants and biodiesel from palm, the Colombian national standard. Each type of biodiesel was obtained by basic transesterification with methanol, using butyl hydroxy toluene, ascorbyl palmitate and propyl gallate at different concentrations (250, 500, 750 and 1000 ppm each), as synthetic antioxidants. Mixtures were prepared with biodiesel from jatropha and palm biodiesel as a strategy to get a better oxidative stability of biodiesel, which was evaluated following the standard EN 14112 for induction time. The results showed that all antioxidants tested have a positive effect on the oxidative stability, being better the use of propyl gallate.