Naslov
Decolourization and mineralization of commercial reactive dyes by using homogeneous and heterogeneous Fenton and UV/Fenton processes

Autori
Papić, Sanja ; Vujević, Dinko ; Koprivanac, Natalija ; Šinko, Danijel

Izvornik
Journal of Hazardous Materials (0304-3894) 164 (2009), 2-3; 1137-1145

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

Ključne riječi
Reactive dyes degradation; Wastewater treatment; Advanced Oxidation Processes; Fenton type processes; UV irradiation

Sažetak
The oxidative decolourization and mineralization of three reactive dyes in separately prepared aqueous solutions C. I. Reactive Yellow 3 (RY3), C. I. Reactive Blue 2 (RB2) and C. I. Reactive Violet 2 (RV2) by using homogeneous and heterogeneous Fenton and UV/Fenton processes have been investigated. The effects of H2O2, Fe2+ and Fe0 concentrations, Fe2+/H2O2 and Fe0/H2O2 molar ratios at pH 3 and T=23 1 C have been studied. Optimal operational conditions for the efficient degradation of all three dye solutions (100 mg L-1) were found to be Fe2+/H2O2=0.5 mM/20 mM and Fe0/H2O2=2 mM/1mM. The experimental results showed that the homogeneous Fenton process employing UV irradiation was the most effective. By using this process, the high levels of mineralization (78-84 %) and decolourization (95-100 %) were achieved. Pseudo-first order degradation rate constants were obtained from the batch experimental data.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

POVEZANOST RADA