期刊
FUEL
卷 117, 期 -, 页码 458-462出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2013.09.065
关键词
Castor oil; Lipases; Burkholderia cepacia; Biodiesel; Transesterification
资金
- CAPES (Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior)
- Brazilian government agency for the development of personnel in higher education
- CNPq (Conselho Nacional de Desenvolvimento Cientifico e Tecnologico)
- Brazilian government agency for the advancement of science
- CNPq
We demonstrate, for the first time, the lipase-catalyzed ethanolysis of castor oil in a solvent-free system. The lipase used was that of Burkholderia cepacia LTEB11, immobilized on Accurel EP 100. With a loading of 4.5% (mass of enzyme preparation in relation to the mass of triacylglycerols in the castor oil) and an ethanol to oil molar ratio of 3: 1, 90% conversion of fatty acids to their corresponding ethyl esters was achieved in 6 h. These results are comparable to results reported in the literature for the lipase-catalyzed ethanolysis of castor oil in supercritical CO2 and in systems containing n-hexane as the solvent. Our system has the advantage of being simpler to operate. (C) 2013 Published by Elsevier Ltd.
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