Naslov
Comparative study on photocatalytic treatment of diclofenac: slurry vs. immobilized processes

Autori
Juretić Perišić, Daria ; Belet, Alexandre ; Kušić, Hrvoje ; Lavrenčič Štangar, Urška ; Lončarić Božić, Ana

Izvornik
Desalination and Water Treatment (1944-3994) 81 (2017); 170-185

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
TiO2 photocatalysis ; pharmaceuticals ; slurry process ; immobilized photocatalyst ; reactivation

Sažetak
The applicability of different photocatalytic systems for the treatment of pharmaceuticals in water was investigated. Slurry (UV-A/TiO2(s) and UV-A/TiO2(s)/H2O2) and immobilized (UV- A/TiO2(i)/H2O2) processes were compared regarding the removal of diclofenac (DCF) and total organic content, as well as the improvements in biodegradability and toxicity. The applied response surface modeling revealed the significance of TiO2 dosage and concentration of H2O2, while pH was less influential within the studied range. Although UV-A/TiO2(i)/H2O2 was somewhat less effective in comparison with UV-A/ TiO2(s)/H2O2 process (88.8% and 99.1% of DCF removal, respectively), the immobilized system enabled photocatalyst reuse. In comparison with air dried and thermally reactivated, chemically reactivated photocatalyst provided better performance through four consecutive runs.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

POVEZANOST RADA