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Efficient inactivation of MS-2 virus in water by hydrodynamic cavitation
ID Kosel, Janez (Author), ID Gutiérrez-Aguirre, Ion (Author), ID Rački, Nejc (Author), ID Dreo, Tanja (Author), ID Ravnikar, Maja (Author), ID Dular, Matevž (Author)

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Abstract
The aim of this study was to accurately quantify the impact of hydrodynamic cavitation on the infectivity of bacteriophage MS2, a norovirus surrogate, and to develop a small scale reactor for testing the effect of hydrodynamic cavitation on human enteric viruses, which cannot be easily prepared in large quantities. For this purpose, 3 mL scale and 1 L scale reactors were constructed and tested. Both devices were efficient in generating hydrodynamic cavitation and in reducing the infectivity of MS2 virus. Furthermore, they reached more than 4 logs reductions of viral infectivity, thus confirming the scalability of hydrodynamic cavitation for this particular application. As for the mechanism of page inactivation, we suspect that cavitation generated OH$^-$ radicals formed an advanced oxidation process, which could have damaged the host's recognition receptors located on the surface of the bacteriophage. Additional damage could arise from the high shear forces inside the cavity. Moreover, the effectiveness of the cavitation was higher for suspensions containing low initial viral titers that are in similar concentration to the ones found in real water samples. According to this, cavitation generators could prove to be a useful tool for treating virus-contaminated wastewaters in the future.

Language:English
Keywords:MS2 bacteriophage, norovirus surrogate, hydrodynamic cavitation, Venturi type constriction, phage infectivity
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:FS - Faculty of Mechanical Engineering
Publication status:Published
Publication version:Author Accepted Manuscript
Year:2017
Number of pages:Str. 465-471
Numbering:Vol. 124
PID:20.500.12556/RUL-126446 This link opens in a new window
UDC:578.2:532(045)
ISSN on article:0043-1354
DOI:10.1016/j.watres.2017.07.077 This link opens in a new window
COBISS.SI-ID:15600923 This link opens in a new window
Copyright:
Zapis Sherpa Romeo za revijo Water research https://v2.sherpa.ac.uk/id/publication/13286 : licenca za recenzirani rokopis (Accepted Version) je CC BY-NC-ND 4.0. (Datum opombe: 15. 3. 2023)
Publication date in RUL:22.04.2021
Views:250
Downloads:60
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Record is a part of a journal

Title:Water research
Shortened title:Water res.
Publisher:Elsevier
ISSN:0043-1354
COBISS.SI-ID:26617344 This link opens in a new window

Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:01.11.2017

Secondary language

Language:Slovenian
Keywords:kavitacija, MS2 bakteriofag, venturijeva cev, virusi, infektivnost

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