Decolorization From Industrial Wastewater of Paper & Packaging by Oxidation Processes of Fenton and Semi-Fenton

Today, using efficient oxidizing agents, the possiblity of decolorization and removal of organic carcinogenic pollutants from Pulp mill wastewater and a paper on the one hand As well as the possibility of degradation of lignin Phenolic compounds and hemicelluloses available In dissolving pulp used in the packaging industry On the other hand is possible. Many studies have shown that Complex structure and aromatic of colors as a template and Favorite representative of toxic compounds are in the pulp industry and paper And if the oxidant can damage color molecules, Certainly can degraded and break down other toxic organic compounds Composition of this industry. In this study, the performance of fenton and fenton-like oxidation processes were investigated on decolorization and removal of organic carcinogenic pollutants of The colored waste of paper industry and packaging. This study , for example, analysis of aqueous solution containing paint "Acid Green 20 " is checked. The most important operational parameters for the removal of paint from the wastewater, determine and optimize that these factors include : pH initial oxidant concentration, concentration and type of catalyst [ Fe (II, III, IV) In this study, for example , analysis of aqueous solution containing paint "Acid Green 20 " is checked. The most important operating parameters for the removal of paint from th wastewater, determine and optimize that these factors include : Initial pH, concentration of oxidant, and catalyst concentration of iron (II, III, IV), cerium , potassium , aluminum, sodium and zinc [initial color concentration, and initial volume of wastewater influent flow rate, Finally after 10 minutes, Color removal efficiency for wastewater COD removal efficiency of 99 % and 93 % colored simulated and real wastewater Hashtgerd karaj located in Karaj, to 90 percent which represents degraded paint and other organic materials, the materials and Non-toxic and colorless by Fenton and Fenton's oxidation. Also assessment Waste removal and semiconductor wastewater assessment was conducted on two scales. The study found that the addition of divalent iron -based catalyst in the process Fenton iron sulfate , iron, potassium and cerium in the Euphrates cerium ammonium nitrate in separately to an important loss Fenton 's oxidation processes faster and with efficiency of 99 % as well as lead paint removal. Fenton oxidation mechanism with the first order kinetic models showed acceptable agreement (987/0 = R2) and the rate constant k1 (1 / min) 43/0 respectively.