Preparation, Characterization and Application of Nanoparticles Iron Oxide Catalyst for the Treatment of Sulfidic Wastewater

Iron oxide nanoparticles were prepared by chemical reaction of iron chloride and
ammonium hydroxide. The product were characterized by SEM, indicating that the fine
particles are nanometer ofiron oxides. The produced iron oxide nanoparticles can be act
as a catalyst. It was shown by the rate of the oxidation of the sodium sulfide in the
wastewater by hydrogen peroxide is higher in the presence of iron oxide nanoparticles.
For the oxidation of sodium sulfide by hydrogen peroxide in the presence of iron oxide
nanoparticles, the optimum condition at which the rate ofthe oxidation is higher were
investigated by investigating the effect of the parameters of initial sulfide concentration,
catalyst loading, and temperature of the system.