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A study on the effect of pulsed power ultrasound waves on marine biofouling

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Title A study on the effect of pulsed power ultrasound waves on marine biofouling
 
Creator Thiruppathi, K.
Lakshmi, P.
Sudarsan, K.
Rajapan, Dhilsha
Kirubagaran, R.
 
Subject Pulse power
Ultrasonic waves
Cavitation
Biofouling control
 
Description 2169-2174
Ultrasonic technique is one of the promising
non-invasive technologies to control biofilm formation on the marine
substratum.  A prototype ultrasonic
system was designed and developed to control biofouling in the marine
environment. The Ultrasonic technique was utilized to control the biofilm
formation on copper test coupons suspended in a continuous seawater flow
through system. The colonization of microorganisms promotes settlement of higher
order organisms; therefore, deactivation of microorganisms is likely to affect
the fouling density. Ultrasonic sound waves at 25 kHz with an
electric drive power of 500 watts were used to control aquatic biofouling and
growth in an open seawater circulation experimental setup. The ultrasonic waves
create microscopic cavitations which damages the outer cell structure of
microorganisms destroying them and preventing them from growing around the
ultrasound exposure areas. The experiments were
conducted continuously over a period of 21 days and were repeated several times
to ensure reliability. A reduction in the microorganism activation was observed
on the ultrasound exposed area besides preventing damages to the structure of
the test coupon. Based on the encouraging results, a low cost prototype
ultrasonic digital system controlled by pre-programmed microchips was custom
built and the same is being planned for further studies in the frequency range
20 – 40 kHz.
 
Date 2016-06-30T06:09:59Z
2016-06-30T06:09:59Z
2014-11
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/34588
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.43(11) [November 2014]