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http://dx.doi.org/10.12925/jkocs.2005.22.2.3

Bio-diesel of Vegetable Oils by Lipase Catalyzed Trans-esterification into Continuous Process  

Hyun, Young-Jin (Department of Chemical Engineering and Clean Technology)
Kim, Hae-Sung (Department of Chemical Engineering, Myongji University)
Publication Information
Journal of the Korean Applied Science and Technology / v.22, no.2, 2005 , pp. 106-115 More about this Journal
Abstract
Bio-diesel as fatty acid methyl ester was derived from such oils as soybean, peanut and canola oil by lipase catalyzed continuous trans-esterification. So the activation of lipase(Novozym - 435) was kept to be up to 4:1, the limiting molar ratio of methanol to oil under one-step addition of methanol due to the miscibility of oil and methanol through the static mixer for 4hrs and the elimination of glycerol on the surface of lipase by 7wt% silica gel. Therefore the overall yield of fatty acid methyl ester from soybean oil appeared to be 98% at 50$^{\cdot}C$ of reaction temperature under two-steps addition of methanol with 2${\times}$2:1 of methanol to oil molar ratio at an interval of 5.5hrs, 7wt% of lipase, 24 number of mixer elements, 0.2ml/min of flow rate and 7wt% of silica gel.
Keywords
Bio-diesel; lipase catalyzed continuous trans-esterification; static mixer; elimination of glycerol; silica gel;
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