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Electrochemical disinfection of fish pathogens in seawater without the production of a lethal concentration of chlorine using a flow reactor

Paper ID Volume ID Publish Year Pages File Format Full-Text
20665 43185 2013 5 PDF Available
Title
Electrochemical disinfection of fish pathogens in seawater without the production of a lethal concentration of chlorine using a flow reactor
Abstract

An electrochemical disinfection system employing a honeycombed platinum coated titanium electrode was developed for the disinfection of seawater. Cell suspensions (2 l, 103 cells/ml) of the fish pathogens, Vibrio alginolyticus, Edwardsiella tarda, Lactococcus garvieae and Vibrio anguillarum were circulated in a reactor equipped with 10 sets of these electrodes at a flow rate of 200 ml/min with an applied potential of 1.0 V vs. Ag/AgCl reference electrode. The circulated cells were completely disinfected after 3 h of treatment, whereas free residual chlorine generated due to seawater electrolysis was below 0.1 ppm. In addition, a diphenyl-1-pyrenylphosphine fluorescent assay revealed that lipid peroxidation in the cell membranes of disinfected bacteria was induced probably by reactive oxygen species generated during electrochemical treatment.

Keywords
Electrochemical disinfection; Marine pathogen; Disinfection byproducts; Flow reactor; Lipid peroxidation
First Page Preview
Electrochemical disinfection of fish pathogens in seawater without the production of a lethal concentration of chlorine using a flow reactor
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Bioscience and Bioengineering - Volume 116, Issue 4, October 2013, Pages 480–484
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering