Evaluating the impact of operating parameters on biocidal effects of pulsed ultrasound in natural water disinfection

Al Juboori, Raed A. and Yusaf, Talal and Aravinthan, Vasantha (2015) Evaluating the impact of operating parameters on biocidal effects of pulsed ultrasound in natural water disinfection. Journal of Biotechnology, 208 (Supplement). S17-S18. ISSN 0168-1656


The knowledge available in the literature regarding the use of pulsed ultrasound for water disinfection is limited. Hence, this study was designed to provide a thorough investigation for the application of pulsed ultrasound disinfection in water treatment. High power low frequency pulsed ultrasound was used to disinfect natural water samples. Two levels of power, treatment time and
On/Off ratio (R) of 40% and 70% amplitudes, 5 and 15 min and 0.2:0.1 and 0.1:0.6, respectively were tested. To scrutinize the effect of the operating parameters on pulsed ultrasound disinfection efficiency,rigorous statistical analyses were performed applying factorial design of 23. Total coliform Quantification was applied as a measure
for disinfection efficiency. It was found that increasing power, treatment time or both had a positive effect on total coliform reduction, whereas increasing the off period of pulsed ultrasound resulted in lower total coliform reduction. The disinfection effects of 2-way interaction of power * R and 3-way interaction of power * treatment
time * R were statistically insignificant (P > 0.05). Linear regression model was developed for predicting total coliform reduction under pulsed ultrasound effect. Cost analyses of the treatments were also conducted.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to Published Abstract is in accordance with the copyright policy of the publisher.
Faculty/School / Institute/Centre: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying
Date Deposited: 03 Sep 2015 05:37
Last Modified: 07 Jun 2016 03:29
Uncontrolled Keywords: pulsed ultrasound disinfection; ultrasound; disinfection; water treatment
Fields of Research : 09 Engineering > 0904 Chemical Engineering > 090410 Water Treatment Processes
09 Engineering > 0905 Civil Engineering > 090508 Water Quality Engineering
09 Engineering > 0905 Civil Engineering > 090509 Water Resources Engineering
Identification Number or DOI: 10.1016/j.jbiotec.2015.06.042
URI: http://eprints.usq.edu.au/id/eprint/27661

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