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Investigation of the stability of Novozym® 435 in the production of biodiesel

Paper ID Volume ID Publish Year Pages File Format Full-Text
54776 47026 2013 8 PDF Available
Title
Investigation of the stability of Novozym® 435 in the production of biodiesel
Abstract

•PMMA along with protein was detected in the reaction media.•Continuous moisture removal leads to the deactivation of Novozym® 435.•Biodiesel is able to diffuse inside the biocatalyst's and produces its swelling.•The protein possesses β-aggregates after reaction.

The effect of the composition of the feedstock (free fatty acids and methanol), the presence or absence of moisture and the contact with biodiesel on the catalytic, enzymatic and physical stability of Novozym® 435 during enzymatic biodiesel production was studied. The continuous removal of moisture leads to the deactivation of the biocatalyst and favours the degradation of the polymethylmethacrylate (PMMA) that constitutes the support of the lipase B of Candida antarctica (CALB). Nevertheless, the presence of PMMA along with the active protein was detected in the reaction media regardless of the operating conditions. Surprisingly, biodiesel (without the presence of methanol) is able to diffuse inside the biocatalyst's beads producing its swelling, modifying the internal texture and also dissolving the polymeric matrix.

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Keywords
Novozym® 435; Biodiesel; FAeSTER; Enzymatic esterification
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Investigation of the stability of Novozym® 435 in the production of biodiesel
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 213, 15 September 2013, Pages 73–80
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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Price was $35.95
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Price after discount Only $4.95
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Full-text PDF Download
Online Support
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