| Title: | Vacuum ultraviolet radiation from gaseous plasma for destruction of water contaminants |
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| Authors: | ID Zver, Mark, Institut "Jožef Stefan" (Author)
ID Zaplotnik, Rok, Institut "Jožef Stefan" (Author)
ID Mozetič, Miran, Institut "Jožef Stefan" (Author)
ID Vesel, Alenka, Institut "Jožef Stefan" (Author)
ID Filipić, Arijana (Author)
ID Dobnik, David (Author)
ID Alcantara Marinho, Belisa, Institut "Jožef Stefan" (Author)
ID Primc, Gregor, Institut "Jožef Stefan" (Author) |
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| Files: |  URL - Source URL, visit https://www.sciencedirect.com/science/article/pii/S030147972500372X
 PDF - Presentation file, download (6,71 MB)
MD5: 6082D26C91548876CC96A86BF698337C
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  IJS - Jožef Stefan Institute
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| Abstract: | Innovative technological solutions are needed for water decontamination to combat the diverse pollutants present in water systems, as no single optimal decontamination technique is appropriate for all circumstances. Vacuum-ultraviolet (V-UV) radiation is a source of energetic photons that break molecular bonds, producing a plethora of chemically reactive agents, most notably OH● radicals, which can cause the degradation of harmful pollutants. Low-pressure gaseous plasma is a good source of V-UV radiation; however, its application to liquid water poses challenges. We constructed an inductively coupled radiofrequency plasma to produce high-intensity V-UV radiation, which was applied to contaminated water via a V-UV-transparent window. Plasma was sustained in hydrogen, as it produces the highest V-UV intensity among all gases at selected discharge parameters. Bacteriophage MS2 was used as an indicator of microbial decontamination efficiency. Reactive oxygen and nitrogen species were measured at various treatment setups to quantify their effect on MS2 inactivation and elucidate the primary inactivation factors. At optimal conditions, the concentration of active virus dropped by 9 log10 PFU/mL in 60 s. The optimal experimental setup was then used to treat bacteria E. coli, S. aureus, antibiotic tetracycline, and synthetic dye methylene blue as representatives of other types of pollutants, all of which were effectively removed/degraded within 10 min of treatment. A comparison of energy efficiency (EEO) to other disinfection setups was made for bacteriophage inactivation. With a low EEO value, we showcase the potential of this technique for further work in this field. |
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| Keywords: | water treatment, radical |
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| Submitted for review: | 26.10.2024 |
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| Article acceptance date: | 29.01.2025 |
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| Publication date: | 01.02.2025 |
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| Publisher: | Elsevier |
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| Year of publishing: | 2025 |
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| Number of pages: | str. 1-12 |
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| Numbering: | Vol. 375, [article no.] 124396 |
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| Source: | Nizozemska |
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| PID: | 20.500.12556/DiRROS-21453  |
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| UDC: | 533 |
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| ISSN on article: | 0301-4797 |
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| DOI: | 10.1016/j.jenvman.2025.124396 |
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| COBISS.SI-ID: | 225452803 |
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| Copyright: | © 2025 The Authors |
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| Note: | Nasl. z nasl. zaslona;
Soavtorji: Rok Zaplotnik, Miran Mozetič, Alenka Vesel, Arijana Filipić, David Dobnik, Belisa Alcantara Marinho, Gregor Primc;
Opis vira z dne 7. 2. 202;
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| Publication date in DiRROS: | 07.02.2025 |
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| Views: | 713 |
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| Downloads: | 362 |
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