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Control of fouling bacteria in freshwater used for the firewater system of a power plant by chemical biocides - an in vitro study

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Title Control of fouling bacteria in freshwater used for the firewater system of a power plant by chemical biocides - an in vitro study
 
Creator Balamurugan, P.
Prashanth, K.
Rao, T. Subba
 
Subject Biofouling
Biofilm
Localized corrosion
Biocide
 
Description 2085-2093
Biofouling/Biofilms
create serious technical problems in industrial operations such as blockages in
pipelines, impeding heat transfer process, biodeterioration of metals and
polymeric components. In this study, the control of bacterial population in freshwater
used for the firewater system of a power plant by chemical biocides was
investigated. Additionally, the bacterial cultures isolated from the firewater
were also tested. Two chemical biocides, Cetyl trimethylammonium
bromide (CTAB) and glutaraldehyde were tested for anti-bacterial
activity in laboratory experiments. The microtitre plate studies showed that
CTAB was effective in low concentrations when compared to glutaraldehyde in
microbicidal activity. However, as far as biofilm inhibition and disruption are
concerned, glutaraldehyde was found to be more efficient. Although, the
biocides showed 50% reduction in biofilm removal, the metabolic inhibition of
the biofilm bacteria by MTT assay was found to be 100%. In case of the biofilms
formed on carbon steel coupons, glutaraldehyde was found to be more efficient
microbicide. While the use of biocides did not reduce the generalized
corrosion, the localized pitting corrosion caused by fouling bacteria was
effectively controlled.
 
Date 2016-06-30T05:15:14Z
2016-06-30T05:15:14Z
2014-11
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/34578
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.43(11) [November 2014]