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Solvent-free methanolysis of canola oil in a packed-bed reactor with use of Novozym 435 plus loofa

Paper ID Volume ID Publish Year Pages File Format Full-Text
17444 42669 2009 7 PDF Available
Title
Solvent-free methanolysis of canola oil in a packed-bed reactor with use of Novozym 435 plus loofa
Abstract

Enzymatic methanolysis of canola oil in the solvent-free system was studied in a packed-bed reactor (PBR) using small pieces of loofa plus Novozym 435. Response surface methodology (RSM) was applied to determine the effect of the transesterification conditions, namely flow rate of substrate (x1), temperature (x2) and methanol to canola oil molar ratio (x3) as the regressors, on the methyl ester production. A central composite design (CCD) was employed to optimize the reaction. A second-order polynomial multiple regression model was chosen and analysis of variance (ANOVA) showed a high coefficient of determination (R2) value of 0.996, thus adjustment of the model with experimental data was ensured. The methyl ester yield increased as the flow rate of the reaction mixture in the PBR increased from its low to the middle level thereafter, increasing the flow rate corresponded to decreasing the yield. The same trends of changes were observed for the other two factors. The optimum process conditions for biodiesel production in the PBR were found to be: x1 = 6.3 mL/min, x2 = 38 °C and x3 = 4.3. The same batch was successfully used repeatedly in the PBR for six enzymatic cycles (432 h), where the methyl ester yield was maintained above 97%.

Keywords
Methanolysis; Biodiesel; Packed-bed reactor; Novozym 435; Loofa; Canola oil; Response surface methodology
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Solvent-free methanolysis of canola oil in a packed-bed reactor with use of Novozym 435 plus loofa
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Publisher
Database: Elsevier - ScienceDirect
Journal: Enzyme and Microbial Technology - Volume 45, Issue 3, 7 September 2009, Pages 188–194
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us