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Enzyme-catalyzed conversion of phenol by using immobilized horseradish peroxidase (HRP) in a membraneless electrochemical reactor

Paper ID Volume ID Publish Year Pages File Format Full-Text
43638 45980 2008 7 PDF Available
Title
Enzyme-catalyzed conversion of phenol by using immobilized horseradish peroxidase (HRP) in a membraneless electrochemical reactor
Abstract

The catalytic conversion of phenol in a membraneless electrochemical reactor with immobilized horseradish peroxidase (HRP) as a biological catalyst was investigated. To introduce HRP into a membraneless electrochemical reactor, we conducted immobilization on the porous Celite beads through aminopropylation with 3-aminopropyltriethoxysilane (3-APTES) and covalent linkage with glutaraldehyde (GA). Under the optimal applied potential determined by the stability of the immobilized HRP in the electric field and the production rate of hydrogen peroxide (H2O2), the aqueous phase of phenol was effectively converted by the electroenzymatic reaction. Phenol was oxidized by the electrochemical and electroenzymatic methods in a membraneless electrochemical reactor with the immobilized HRP, showing that the oxidation of phenol was enhanced by the electroenzymatic method. During the electroenzymatic degradation, phenol was converted into p-benzoquinone, various organic acids and carbon dioxide (CO2).

Graphical abstractThis study tested the feasibility of a membraneless electrochemical reactor with immobilized horseradish peroxidase (HRP) for the advanced oxidation of phenol. Under the optimal applied potential, the immobilized HRP that was applied on the inorganic porous Celite was stable and hydrogen peroxide (H2O2) was effectively produced. Phenol was degraded into p-benzoquinone, various organic acids and carbon dioxide through the electroenzymatic method. Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Membraneless electrochemical reactor; Electroenzymatic oxidation; Horseradish peroxidase (HRP); Phenol; Electrogeneration of hydrogen peroxide (H2O2)
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Enzyme-catalyzed conversion of phenol by using immobilized horseradish peroxidase (HRP) in a membraneless electrochemical reactor
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 337, Issue 1, 15 March 2008, Pages 66–72
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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