Effect of Fe(III)-ligand properties on effectiveness of modified photo-Fenton processes.
This paper examines a modified photo-Fenton (UV/Fe oxalate/H2O2) process. The degradation of oxalate in this system in the absence of Reactive Red 235 was studied using both experimentation and kinetic modelling. The degradation of Reactive Red 235 in this system was also studied. Light intensity and solution pH had large effects on the degradation of both oxalate and Reactive Red 235, with the effect of pH not due simply to speciation changes. The most important properties of the oxalate ligand in the UV/Fe oxalate/H2O2 process are that it forms Fe(III)-oxalato complexes that are easily photolysed and also is relatively unreactive with OH. radicals.
Aplin
R
R
School of Civil and Environmental Engineering, The University of New South Wales, Australia.
Feitz
A J
AJ
Waite
T D
TD
D004396:Coloring Agents / Q000737:chemistry; D005290:Ferric Compounds / Q000737:chemistry*; D006861:Hydrogen Peroxide / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D017665:Hydroxyl Radical / Q000737:chemistry*; D007501:Iron / Q000737:chemistry*; D007700:Kinetics; D008027:Light; D008956:Models, Chemical; D010070:Oxalates / Q000737:chemistry*; D016877:Oxidants / Q000737:chemistry*; D010084:Oxidation-Reduction; D010777:Photochemistry
D004396:Coloring Agents; C045076:Fenton's reagent; D005290:Ferric Compounds; D010070:Oxalates; D016877:Oxidants; D017665:Hydroxyl Radical; D006861:Hydrogen Peroxide; D007501:Iron