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Investigation of hydrodynamic cavitation induced reactive oxygen species production in microchannels via chemiluminescent luminol oxidation reactions
ID
Podbevšek, Darjan
(
Author
),
ID
Ledoux, Gilles
(
Author
),
ID
Dular, Matevž
(
Author
)
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https://www.sciencedirect.com/science/article/pii/S0043135422005814
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Abstract
Hydrodynamic cavitation was evaluated for its reactive oxygen species production in several convergent-divergent microchannel at the transition from micro to milli scale. Channel widths and heights were systematically varied to study the influence of geometrical parameters at the transitory scale. A photomultiplier tube was used for time-resolved photon detection and monitoring of the chemiluminescent luminol oxidation reactions, allowing for a contactless and in situ quantization of reactive oxygen species production in the channels. The radical production rates at various flow parameters were evaluated, showing an optimal yield per flow rate exists in the observed geometrical range. While cavitation cloud shedding was the prevailing regime in this type of channels, the photon arrival time analysis allowed for an investigation of the cavitation structure dynamics and their contribution to the chemical yield, revealing that radical production is not linked to the synchronous cavitation cloud collapse events. Instead, individual bubble collapses occurring throughout the cloud formation were recognized to be the source of the reactive oxygen species.
Language:
English
Keywords:
cavitation cloud shedding
,
free radicals
,
photon counting
,
microscale cavitation
,
luminol chemiluminescence
,
convergent-divergent channels
Work type:
Article
Typology:
1.01 - Original Scientific Article
Organization:
FS - Faculty of Mechanical Engineering
Publication status:
Published
Publication version:
Version of Record
Year:
2022
Number of pages:
11 str.
Numbering:
Vol. 220, art. 118628
PID:
20.500.12556/RUL-137030
UDC:
532.528
ISSN on article:
0043-1354
DOI:
10.1016/j.watres.2022.118628
COBISS.SI-ID:
109552899
Publication date in RUL:
30.05.2022
Views:
661
Downloads:
114
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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
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.
Secondary language
Language:
Slovenian
Keywords:
kavitacija
,
prosti radikali
,
kemoluminiscenca
Projects
Funder:
EC - European Commission
Funding programme:
H2020
Project number:
771567
Name:
An investigation of the mechanisms at the interaction between cavitation bubbles and contaminants
Acronym:
CABUM
Funder:
ARRS - Slovenian Research Agency
Project number:
J2-3057
Name:
Kontrolirano generiranje mikromehurčkov in raziskave njihove fizike za uporabo v kemiji, biologiji in medicini
Funder:
ARRS - Slovenian Research Agency
Project number:
L7-3184
Name:
Učinkovitost inaktivacije z vodo prenosnih virusov s prototipno napravo, ki združuje neravnovesno plazmo in hidrodinamično kavitacijo
Funder:
ARRS - Slovenian Research Agency
Project number:
J7-2601
Name:
Metoda dekontaminacije aktivnih blat in njihovih produktov za njihovo trajnostno uporabo kot fosfatna gnojila
Funder:
ARRS - Slovenian Research Agency
Project number:
P2-0422
Name:
Funkcionalne tekočine za napredne energetske sisteme
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