This paper examines the use of three advanced oxidation processes in degrad
ing the textile dye, Reactive Red 235. The dye was oxidised using ozonation
, standard Fenton's reagent (Fe2+/H2O2) and a modified photo-fenton's proce
ss (UV/Fe oxalate/H2O2) under a variety of conditions. The effects of initi
al dye concentration, initial pH and NaCl concentration were studied for ea
ch process. Each process was found to have different optimum conditions as
determined by the underlying reaction mechanisms.