The Use of Fixed Bed Meander Microreactor in Enzymatic Glycerolysis Study

Page: 1058

M. Drhová, S. Šabata, J. Sýkora, J. Hetflejš, J. Křišťál, and G. Kuncová

Institute of Chemical Process Fundamentals, Academy of Sciences of the Czech Republic, Prague


Transesterification of soybean oil (O) with glycerol (G), catalysed by Novozym 435, was studied in tert-butyl alcohol as solvent. The effects of reaction tempe¬rature (40–50 °C), solvent concentration (20–35 vol.%), G/O molar ratio (1:1 – 2:1), and residence time (min) on the oil phase composition (tri- (TAG), di- (DG) and monoacylglycerol) were evaluated. DAG formation was preferred at lower temperatures, lower G/S mole ratios, and at higher solvent concentrations. The data for G/S = 2:1 agreed well with those obtained in a continous fixed-bed column reactor. Glycerolyses of olive, sunflower, rapeseed, and linseed oils are also reported. Higher reaction rates of continous processes compared with batch glycero¬lysis were observed.


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