%0 Journal Article
%T Variables de operaci車n en el proceso de transesterificaci車n de aceites vegetales: una revisi車n - cat芍lisis enzim芍tica
%A Gir車n Gallego
%A Erika
%A Torres Castaˋeda
%A Harlen Gerardo
%J Ingenier赤a e Investigaci車n
%D 2010
%I Universidad Nacional de Colombia
%X this paper presents the results of a literature review regarding how operating conditions influence vegetable oil enzymatic transesterification yield. the following parameters were studied: temperature and time reaction, alcohol:oil molar ratio, alcohol type, biocatalyst type and concentration, solvent, mixed intensity, reagent purity and free fatty acid and moisture concentration. yields greater than 90% can be achieved in the enzymatic catalyst of vegetable oil using 35-50∼c temperatures, long time reactions (790h) and a 3:1alcohol:vegetable oil molar ratio; however, such values would intrinsically depend on the type of lipase and oil used. it was also found that free fatty acid and moisture concentration were parameters which did not require rigorous control due to high enzyme specificity. lipases immobilisedfrom pseudomona cepacia bacteria and rhizopus orizae fungi were most used in vegetable oil enzymatic transesterification.
%K transesterification
%K operating conditions
%K biodiesel
%K vegetable oil
%K enzyme.
%U http://www.scielo.org.co/scielo.php?script=sci_abstract&pid=S0120-56092010000100003&lng=en&nrm=iso&tlng=en