| Title: | Photocatalytic sol-gel/P25 TiO [sub] 2 coatings for water treatment : degradation of 7 selected pharmaceuticals (CO3:IL02) |
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| Authors: | Matoh, Lev (Author)
Žener, Boštjan (Author)
Kovačić, Marin (Author)
Kušić, Hrvoje (Author)
Arčon, Iztok (Author)
Levstek, Meta (Author)
Lavrenčič Štangar, Urška (Author) |
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| Files: | This document has no files. This document may have a phisical copy in the library of the organization, check the status via COBISS.  |
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| Language: | English |
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| Work type: | Not categorized (r6) |
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| Tipology: | 1.01 - Original Scientific Article |
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| Organization: | UNG - University of Nova Gorica |
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| Abstract: | The effect of different water matrices on the photocatalytic degradation of dissolved pharmaceuticals was
explored. The focus was on the degradation efficiencies in wastewater effluent from a bioreactor and water
effluent from a central wastewater treatment plant and comparing the results with degradation in deionized H2O.
The compounds tested included: oxytetracycline, marbofloxacin, ibuprofen, diclofenac, phenytoin, ciprofloxacin,
sulfamethoxazole. For the experiments performed in this study, a compact packed-bed photocatalytic reactor was
used in which the hybrid TiO2 photocatalyst (sol-gel/P25) was deposited on ~3 mm glass beads. As expected, the
reactions proceed more slowly in wastewater than in deionized water, yet it is shown that removal of the
compounds from the water is still possible even when other organic molecules are present. Total organic carbon
measurements have shown that complete mineralization takes place albeit at slower rates than the initial
degradation of parent compounds. The results show that an acidic pH can increase the reaction rates and the
adsorption on the photocatalyst surface. Analyses of the degradation intermediates were performed using tandem
liquid chromatography triple-quadrupole mass spectrometry system. Additionally, X-ray absorption spectroscopy
was applied to get insight into the local structure of the photocatalyst before and after use. Understanding the
effects that different wastewater compositions have on photocatalytic reactions will help to refine the potential
applications of the technology. |
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| Keywords: | titanium dioxide, sol-gel processes, functionla applications, water treatment |
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| Year of publishing: | 2022 |
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| Number of pages: | str. 1-39 |
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| Numbering: | iss. , Vol. |
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| COBISS_ID: | 122451459 |
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| ISSN on article: | 0272-8842 |
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| URN: | URN:SI:UNG:REP:FFI81KQI |
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| DOI: | 10.1016/j.ceramint.2022.09.204 |
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| Views: | 312 |
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| Downloads: | 0 |
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| Categories: | Document is not linked to any category. |
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