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Author(s): Teresa M. Mata
Igor R. B. G. Sousa
Nídia de Sá Caetano
Title: Transgenic corn oil for biodiesel production via enzymatic catalysis with ethanol
Issue Date: 2012
Abstract: This work aims to study the production of fatty acid ethyl esters (FAEE) from a transgenic corn oil,through transesterification using supported enzymes as catalyst (Lipozyme TL IM from Novozymes)and ethanol as reagent. First, the corn oil was characterized for its acid value (0.26 mg KOH/g oil),iodine number (127 g iodine/100 g oil), kinematic viscosity at 40 ºC (36.27 mm2/s), density at 20 ºC(919 kg/m3) and water content (749 mg/kg). Second, the best operating conditions to perform thetransesterification reaction were determined, by testing the following experimental conditions: oil/alcohol molar ratio (1:3, 1:6 and 1:9), catalyst/ oil mass ratio (2.3, 2.8 and 3.3 wt%), reaction time (8and 12 h) and reaction temperature (35 and 45 ºC). Results showed that although some of the qualityparameters analyzed were out of the EN 14214:2009 standard limits (namely the kinematic viscosity,water content, acid value and group I metals) the best operating conditions for a good biodiesel quality(with 69.2 wt% of FAEE content) and the highest reaction yield (98.95 wt%) are an oil/ alcohol molarratio of 1:6, a catalyst/ oil mass ratio of 2.8 wt%, a reaction time of 12 h and a reaction temperature of35 ºC.
Subject: Ciências Tecnológicas, Outras ciências da engenharia e tecnologias
Technological sciences, Other engineering and technologies
Scientific areas: Ciências da engenharia e tecnologias::Outras ciências da engenharia e tecnologias
Engineering and technology::Other engineering and technologies
Related Information: info:eu-repo/grantAgreement/FCT - Fundação para a Ciência e Tecnologia/Programa de Financiamento Plurianual de Unidades de I&D/FCOMP-01-0124-FEDER-022677/PROJECTO ESTRATÉGICO - UI 511 - 2011-2012/PEst-C/EQB/UI0511/2011
Document Type: Artigo em Revista Científica Internacional
Rights: restrictedAccess
Appears in Collections:FEUP - Artigo em Revista Científica Internacional

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