Photo-fenton oxidation technique is one of
the emerging oxidation processes explored in treatment
of organic pollutants in aqueous solutions. This research
is focused on utilization of Fe(II) loaded activated
carbon and H2O2(aq) in a photofenton process to
generate hydroxyl radicals that mineralize methyl
orange dyes. Samples of activated carbon were treated
with Fe(NO3)2(aq) and characterized using SEM, pHZPC,
specific surface area and boehm’s titration. The
degradation of methyl orange by the iron loaded
activated carbon (Fe-Ac), via photo-Fenton process, was
investigated in lab-scale defined by experimental design.
Central composite design (CCD) was used to evaluate
the effects of the five independent variables considered
for the optimization of the oxidative process: time, FeAc dose, methyl orange concentration, pH and H2O2
concentrations. In the optimization, the correlation
) for the quadratic model was 0.9941.
Optimum reaction conditions were obtained at pH = 3,
catalyst dose = 0.1 mg/100ml, H2O2 = 0.62ml, methyl
orange concentration = 5mg/l and time = 30 minutes.
Keywords : Photofenton, Photodegradation, Methyl Orange.