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Enhanced enzymatic transesterification of palm oil to biodiesel

Paper ID Volume ID Publish Year Pages File Format Full-Text
3756 186 2011 4 PDF Available
Title
Enhanced enzymatic transesterification of palm oil to biodiesel
Abstract

Inefficient reaction is one of the drawbacks for the enzymatic production of biodiesel (BD). A method for enhanced Novozym 435-catalyzed transesterification of palm oil (PO) to BD using a mixture of methanol and methyl acetate (MA) as acyl acceptors has been developed. BD yield using methanol–MA mixture reached 95–96% after 8 h at a methanol to PO molar ratio of 1:1, a MA to palm oil molar ratio of 12:1, 2 g of PO, temperature of 50 °C and Novozym 435 loading of 0.6 g. In contrast with methanol–MA mixture, BD yield using MA alone after 24 h was 88–89% under the same reaction conditions. Novozym 435 was repeatedly used at 40 and 50 °C for 10 cycles. There was no considerable loss in the enzyme activity at 40 °C using either methanol–MA mixture or MA alone, while the remaining activity of the enzyme at 50 °C in both cases after 10 cycles was 82–85%. The developed method has a potential to be used for efficient enzymatic production of BD.

► Comparison of methanol with methyl acetate (MA) as acyl acceptor for Novozym 435-catalyzed transesterification of palm oil to biodiesel. ► Methanol is more reactive than MA but deactivates Novozym 435. ► The presence of MA minimizes methanol deactivation of Novozym 435. ► Combined use of methanol and MA enhances the reaction 3-fold and reduces the enzyme load.

Keywords
Biodiesel; Novozym 435; Methanol–methyl acetate mixture; Palm oil; Transesterification
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 55, Issue 2, 15 July 2011, Pages 119–122
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