Naslov
Photo-assisted Fenton type processes for the degradation of phenol: a kinetic study

Autori
Kušić, Hrvoje ; Koprivanac, Natalija ; Lončarić Božić, Ana ; Selanec, Iva

Izvornik
Journal of hazardous materials (0304-3894) 136 (2006), 3; 632-644

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

Ključne riječi
Photo-Fenton reaction; UV radiation; wastewater; phenol; kinetic modeling

Sažetak
In this study the application of advanced oxidation processes (AOPs), dark Fenton and photo-assisted Fenton type processes ; Fe2+/H2O2, Fe3+/H2O2, Fe0/H2O2, UV/Fe2+/H2O2, UV/Fe3+/H2O2 and UV/Fe0/H2O2, for degradation of phenol as a model organic pollutant in the wastewater was investigated. A detail kinetic modeling which describes degradation of phenol was preformed. Mathematical models which predict phenol decomposition and formation of primary oxidation by-products: catechol, hydroquinone and benzoquinone, by applied processes were developed. The study also consist modeling of mineralization kinetic of the phenol solution by applied AOPs. This part, besides well known reactions of Fenton and photo-Fenton chemistry, involve additional reactions which describe removal of iron from catalytic cycle through formation of ferric complexes and its regeneration induced by UV radiation. Phenol decomposition kinetic was monitored by HPLC analysis and total organic carbon content measurements (TOC). Complete phenol removal was obtained by all applied processes. Residual TOC by applied Fenton type processes ranged between 60.16-44.67 %, while the efficiency of those processes was significantly enhanced in the presence of UV light, where residual TOC ranged between 15.23-2.41 %.

Izvorni jezik
Engleski

Znanstvena područja
Kemijsko inženjerstvo

POVEZANOST RADA