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Nitrate-reducing bacterial community in a biofilm-electrode reactor

Paper ID Volume ID Publish Year Pages File Format Full-Text
18442 42723 2006 6 PDF Available
Title
Nitrate-reducing bacterial community in a biofilm-electrode reactor
Abstract

Nitrate reduction using an electrode as a direct electron donor in a biofilm-electrode reactor was investigated to treat an aqueous solution containing high concentration of nitrate. In the biofilm-electrode reactor, nitrate was reduced in the absence of organic substances by accepting electrons from the electrode. As nitrate concentration decreased, oxidation-reduction potential (ORP) gradually decreased from −80 to −260 mV. With nested PCR products from the biofilm-electrode, bacterial community was analyzed by using denaturing gradient gel electrophoresis (DGGE). DGGE analysis revealed that 10 bands were detected. Four bands (EB4, EB6, EB7, EB10) were dominant in the biofilm. The gene analysis of 16S rDNA showed that the major populations were α-proteobacteria, β-proteobacteria, γ-proteobacteria and flavobacteria.

Keywords
Nitrate-reducing bacteria; Electron donor; Biofilm-electrode reactor
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Publisher
Database: Elsevier - ScienceDirect
Journal: Enzyme and Microbial Technology - Volume 39, Issue 3, 3 July 2006, Pages 453–458
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
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Any Questions? feel free to contact us