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Soybean oil transesterification by the use of a microwave flow system
Encinar, J.; González, J.; Martínez, G.The production of methyl esters from soybean transesterification by the use of a microwave flow system has been investigated. A household microwave was modified as a biodiesel reactor for continuous transesterification. The effects of temperature at the exit point (50–110 °C), the methanol/oil molar ratio (3:1, 6:1, 9:1 and 12:1) and the catalyst concentration (0.5%, 1.0% and 1.5% in weight of KOH) were evaluat...
Transesterification of castor oil under ultrasonic irradiation conditions: prel...
Encinar, J.; González, J.; Pardal, A.In this work, the preliminary results obtained in the transesterification of castor-oil with methanol in the presence of ultrasonic irradiations, are presented. The fundamental objective was to study the acceleration that the ultrasound causes in the reaction rate. The effect of different operating variables, such as frequency and supplied power dissipation, catalyst (KOH) concentration and methanol oil molar r...
Transesterification of vegetables oil in subcritical methanol conditions
Pardal, Ana Cristina; M. Encinar, J.; F. González, J.; Martínez, G.Comunicação apresentada na 18th European Biomass Conference and Exhibition, Lyon (França), Maio de 2010 ; In this study, transesterification of rapeseed oil using subcritical methanol and potassium hydroxide as catalyst was studied. The variables affecting the methyl ester yield during the transesterification reaction, such as the catalyst content, reaction temperature, reaction time and the molar ratio of alc...
Transesterification of rapeseed oil with methanol in the presence of various co...
Pardal, Ana Cristina; Encinar, J.M.; González, J.F.; Martínez, G.Comunicação apresentada no «Third International Symposium on Energy from Biomass and Waste», Venice(Italy), Novembro 2010 ; In this study, transesterification of rapeseed oil using various co-solvents(diethyl ether (DEE), dibutyl ether (diBE), tert-butyl methyl ether (tBME), diisopropyl ether (diIPE), tetrahydrofuran (THF), and acetone) was studied. The variables affecting the ester yield during transesterific...
Transesterification of vegetables oil in subcritical methanol conditions
Pardal, Ana Cristina; M. Encinar, J.; F. González, J.; Martínez, G.Comunicação apresentada na 18th European Biomass Conference and Exhibition, Lyon (França), Maio de 2010 ; In this study, transesterification of rapeseed oil using subcritical methanol and potassium hydroxide as catalyst was studied. The variables affecting the methyl ester yield during the transesterification reaction, such as the catalyst content, reaction temperature, reaction time and the molar ratio of alc...
Transesterification of rapeseed oil with methanol in the presence of various co...
Pardal, Ana Cristina; Encinar, J.M.; González, J.F.; Martínez, G.Comunicação apresentada no «Third International Symposium on Energy from Biomass and Waste», Venice(Italy), Novembro 2010 ; In this study, transesterification of rapeseed oil using various co-solvents(diethyl ether (DEE), dibutyl ether (diBE), tert-butyl methyl ether (tBME), diisopropyl ether (diIPE), tetrahydrofuran (THF), and acetone) was studied. The variables affecting the ester yield during transesterific...
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