Continuous enzymatic synthesis of biodiesel with Novozym 435

A continuous process for the enzymatic synthesis of biodiesel, fatty acid methyl esters (FAMEs) from soybean oil, catalyzed by immobilized lipase from Candida antarctica (Novozym 435) was investigated. Novozym 435 was packed in a packed-bed reactor and used to catalyze the alcoholysis of methanol an...

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Bibliographic Details
Published in:Energy & Fuels
Main Authors: Shaw, J.F., 林松池, Chang, S.W., Lin, S.C., Wu, T.T., Ju, H.Y., Akoh, C.C., Chang, R.H., Shieh, C.J., 謝淳仁
Format: Article in Journal/Newspaper
Language:English
Published: 2008
Subjects:
candida-antarctica lipase
catalyzed biodiesel
oil
conversion
fuel
Antarc*
Antarctica
Online Access:http://hdl.handle.net/11455/42018
https://doi.org/10.1021/ef7005047
Description
Summary:A continuous process for the enzymatic synthesis of biodiesel, fatty acid methyl esters (FAMEs) from soybean oil, catalyzed by immobilized lipase from Candida antarctica (Novozym 435) was investigated. Novozym 435 was packed in a packed-bed reactor and used to catalyze the alcoholysis of methanol and soybean oil to produce FAMEs in a cosolvent system. Response surface methodology (RSM) and 3-factor-3-level fractional factorial design were employed to evaluate the effects of synthesis parameters, such as reaction temperature (45-65 degrees C), flow rate (0.1-0.5 mL/min), and substrate molar ratio of methanol to soybean oil (3:1-5:1) on percentage molar conversion of FAMEs by alcoholysis. Reaction temperature and flow rate had significant effects on the percent molar conversion. On the basis of ridge mix analysis, the optimum conditions for synthesis were as follows: reaction temperature 52 degrees C, flow rate 0.1 mL/min, and substrate molar ratio 4.3:1. The predicted value was 74.2%, and the actual experimental value was 75.2% molar conversion.

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