Biodiesel fuel production by the transesterification reaction of soybean oil using immobilized lipase.

Bernardes, Otávio L; Bevilaqua, Juliana V; Leal, Márcia C M R; Freire, Denise M G; Langone, Marta A P

Bernardes, Otávio L; Bevilaqua, Juliana V; Leal, Márcia C M R; Freire, Denise M G; Langone, Marta A P.

Afiliação

Bernardes OL; Instituto de Química, Universidade do Estado do Rio de Janeiro, Rua São Francisco Xavier, 524, PHLC, sl. 427, CEP: 20559-900, RJ, RJ, Brazil.

Appl Biochem Biotechnol ; 137-140(1-12): 105-14, 2007 Apr.

Article em En | MEDLINE | ID: mdl-18478380

RESUMO

The enzymatic alcoholysis of soybean oil with methanol and ethanol was investigated using a commercial, immobilized lipase (Lipozyme RMIM). The effect of alcohol (methanol or ethanol), enzyme concentration, molar ratio of alcohol to soybean oil, solvent, and temperature on biodiesel production was determined. The best conditions were obtained in a solvent-free system with ethanol/oil molar ratio of 3.0, temperature of 50 degrees C, and enzyme concentration of 7.0% (w/w). Three-step batch ethanolysis was most effective for the production of biodiesel. Ethyl esters yield was about 60% after 4 h of reaction.

Assuntos

Etanol/química; Gasolina; Lipase/química; Metanol/química; Óleo de Soja/química; Fontes de Energia Bioelétrica; Enzimas Imobilizadas/química; Esterificação

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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Óleo de Soja / Gasolina / Etanol / Metanol / Lipase Idioma: En Revista: Appl Biochem Biotechnol Ano de publicação: 2007 Tipo de documento: Article País de afiliação: Brasil País de publicação: Estados Unidos

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