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Photocatalytic sol-gel/P25 TiO$_2$ coatings for water treatment : degradation of 7 selected pharmaceuticals
ID
Matoh, Lev
(
Author
),
ID
Žener, Boštjan
(
Author
),
ID
Kovačić, Marin
(
Author
),
ID
Kušić, Hrvoje
(
Author
),
ID
Arčon, Iztok
(
Author
),
ID
Levstek, Marjetka
(
Author
),
ID
Lavrenčič Štangar, Urška
(
Author
)
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https://www.sciencedirect.com/science/article/pii/S027288422203382X
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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 H$_2$O. 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 TiO$_2$ 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.
Language:
English
Keywords:
titanium dioxide
,
sol–gel processes
,
functional applications
,
water treatment
,
TiO$_2$
Work type:
Article
Typology:
1.01 - Original Scientific Article
Organization:
FKKT - Faculty of Chemistry and Chemical Technology
Publication status:
Published
Publication version:
Version of Record
Year:
2023
Number of pages:
Str. 24395–24406
Numbering:
Vol. 49, iss. 14, pt. B
PID:
20.500.12556/RUL-142792
UDC:
546.82-31:544.526.5
ISSN on article:
0272-8842
DOI:
10.1016/j.ceramint.2022.09.204
COBISS.SI-ID:
122451459
Publication date in RUL:
25.11.2022
Views:
950
Downloads:
100
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Record is a part of a journal
Title:
Ceramics international
Shortened title:
Ceram. int.
Publisher:
Elsevier
ISSN:
0272-8842
COBISS.SI-ID:
5822215
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:
titanov dioksid
,
sol-gel procesi
,
funkcionalna aplikacija
,
čiščenje vode
Projects
Funder:
ARRS - Slovenian Research Agency
Project number:
P1-0134
Name:
Kemija za trajnostni razvoj
Funder:
ARRS - Slovenian Research Agency
Project number:
P1-0112
Name:
Raziskave atomov, molekul in struktur s fotoni in delci
Funder:
ARRS - Slovenian Research Agency
Project number:
L7-1848
Name:
Fotokatalitsko čiščenje vode - razvoj pritrjenih katalizatorjev in kompaktnih reaktorskih sistemov
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