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Microbial denitrification by immobilized bacteria Pseudomonas denitrificans stimulated by constant electric field

Paper ID Volume ID Publish Year Pages File Format Full-Text
4270 218 2009 6 PDF Available
Title
Microbial denitrification by immobilized bacteria Pseudomonas denitrificans stimulated by constant electric field
Abstract

A comparative study of microbial reduction of nitrate ions by immobilized Pseudomonas denitrificans cells in the presence and in the absence of a constant electric field was carried out. The experiments were carried out in a continuous stirred tank reactor at a broad range of dilution rates. The cathode potential was maintained constant around the standard potential value of the nitrate/nitrite redox couple. The residual outlet concentrations of nitrate, when the electric field was applied, were much lower than those obtained without the electric field, all other conditions being equal. It was demonstrated that the electric field had a significant effect on the nitrate reduction rate allowing the use of much higher inlet flow rates compared to the flow rate in the absence of an electric field.

Keywords
Bioremediation; Denitrification; Stirred tank bioreactor; Continuous process; Immobilized cells; Constant electric field
First Page Preview
Microbial denitrification by immobilized bacteria Pseudomonas denitrificans stimulated by constant electric field
Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 44, Issues 2–3, 15 May 2009, Pages 208–213
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering