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Please use this identifier to cite or link to this item: http://repositorio.ufba.br/ri/handle/ri/15657

Title: Ultrasound-assisted synthesis of ethyl esters from soybean oil via homogeneous catalysis
Other Titles: Fuel Processing Technology
Authors: Brito, Jeane Quelle Alves
Silva, Creuza S.
Almeida, Jorge Santos de
Korn, Maria das Graças Andrade
Korn, Mauro
Teixeira, Leonardo Sena Gomes
Keywords: Ethyl esters;Soybean oil;Biodiesel;Transesterification;Ethanolysis;Ultrasound-assisted reaction
Issue Date: 2012
Abstract: A transesterification reaction of esters from soybean oil with ethanol assisted by low-frequency ultrasound (20 kHz) was performed in the presence of a potassium hydroxide catalyst. The effects of the following variables on the reaction performance were studied simultaneously through a full two-level factorial design 23: the concentration of the catalyst, the oil:ethanol molar ratio and the sonication time. The three investigated factors significantly affected the yield. Further experimentation was performed using a three-step reaction. An ethyl ester yield of approximately 98% was attained in the third step. The physicochemical properties of the products were compared with the technical limits of biodiesel, and the results suggest that the ultrasound-assisted ethanol transesterification reaction could be a viable and efficient method for the production of quality biodiesel from soybean oil.
Description: Texto completo: acesso restrito. p. 33–36
URI: http://repositorio.ufba.br/ri/handle/ri/15657
ISSN: 0378-3820
Appears in Collections:Artigos Publicados em Periódicos (Quimica)

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