Insights into the scalability of magnetostrictive ultrasound technology for water treatment applications

Al-Juboori, Raed A. and Bowtell, Leslie A. and Yusaf, Talal and Aravinthan, Vasantha (2016) Insights into the scalability of magnetostrictive ultrasound technology for water treatment applications. Ultrasonics Sonochemistry, 28. pp. 357-366. ISSN 1350-4177

Abstract

To date, the successful application of large scale ultrasound in water treatment has been a challenge.
Magnetostrictive ultrasound technologies for constructing a large-scale water treatment system are
proposed in this study. Comprehensive energy evaluation of the proposed system was conducted. The
effects of chosen waveform, scalability and reactor design on the performance of the system were
explored using chemical dosimetry. Of the fundamental waveforms tested; sine, triangle and square,
the highest chemical yield resulted from the square wave source. Scaling up from the 0.5 L
bench-scale system to the 15 L large-scale unit resulted in a gain of approximately 50% in sonochemical
efficiency (SE) for the system. The use of a reactor tank with 45� inclined sides further increased SE of the
system by 70%. The ability of the large scale system in removing contaminants from natural water
samples was also investigated. The results revealed that the large-scale unit was capable of achieving
a maximum removal of microbes and dissolved organic carbon (DOC) of 35% and 5.7% respectively at a
power density approximately 3.9 W/L. The results of this study suggest that magnetostrictive ultrasound
technology excited with square wave has the potential to be competitive in the water treatment industry.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Permanent restricted access to Published version in accordance with the copyright policy of the publisher.
Faculty / Department / School: Current - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying
Date Deposited: 03 Sep 2015 01:53
Last Modified: 20 Mar 2017 00:15
Uncontrolled Keywords: ultrasound; magnetostrictive transducers; terfenol-D; waveform; scalability; reactor design
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.ultsonch.2015.08.013
URI: http://eprints.usq.edu.au/id/eprint/27658

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