Artículos de revistas
Kinetic analysis of enzymatic esterification of fatty acids and ethanol
Fecha
2007-08-08Registro en:
Borio, Daniel Oscar; Trubiano, G.C.; Perez, Guillermo Agustin; Borio, Daniel Oscar; Errazu, Alberto Felipe; Kinetic analysis of enzymatic esterification of fatty acids and ethanol; Elsevier; Studies In Surface Science And Catalysis; 133; 8-8-2007; 619-624
0167-2991
CONICET Digital
CONICET
Autor
Borio, Daniel Oscar
Trubiano, G.C.
Perez, Guillermo Agustin
Borio, Daniel Oscar
Errazu, Alberto Felipe
Resumen
The esterification of oleic acid and ethanol with immobilised lipase in a solvent-free media is presented in this work. The reaction has been carried out at a laboratory scale in a stirred tank reactor operating batchwise. The evolution of oleic acid conversion to ester was determined by using two analysis techniques: measurement of the acid index and gas chromatography. The influence of the operating conditions on the equilibrium conversion and conversion-time profiles was analysed. The amount of enzyme, temperature, initial alcohol/oleic acid molar ratio and initial water content were considered. A kinetic model has been developed for the enzymatic esterification of oleic acid and ethanol catalysed by Candida Antartica immobilised lipase. Some kinetic models were considered and a second order reaction kinetic was selected. The parameter adjustment was carried out by using a computer program based on Marquardt algorithms. The results from the simulated experiments by using the proposed model showed a satisfactory agreement with the experimental data.