degradation of 7 selected pharmaceuticals (CO3:IL02)
Lev Matoh (Avtor), Boštjan Žener (Avtor), Marin Kovačić (Avtor), Hrvoje Kušić (Avtor), Iztok Arčon (Avtor), Meta Levstek (Avtor), Urška Lavrenčič Štangar (Avtor)

Povzetek

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.

Ključne besede

titanov dioksid;sol-gel procesi;funkcionalna aplikacija;čiščenje vode;titanium dioxide;sol-gel processes;functionla applications;water treatment;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL FKKT - Fakulteta za kemijo in kemijsko tehnologijo
UDK: 546.82-31:544.526.5
COBISS: 122451459 Povezava se bo odprla v novem oknu
ISSN: 0272-8842
Št. ogledov: 432
Št. prenosov: 0
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarne ključne besede: titanov dioksid;sol-gel procesi;funkcionalna aplikacija;čiščenje vode;
URN: URN:SI:UNG
Vrsta dela (COBISS): Delo ni kategorizirano
Strani: str. 1-39
Letnik: ǂVol. ǂ
Zvezek: ǂiss. ǂ
Čas izdaje: 2022
DOI: 10.1016/j.ceramint.2022.09.204
ID: 17188704