Investigation of operational conditions for the removal of methylene blue by Fenton Reaction

Fenton reaction has been concerned by many researchers due to easy operation and effective degradation of bioresistant organics. This study aims to investigate the effect of the operational conditions on the effectiveness of Fenton’s process for the decolorization of methylene blue.The influence of methylene blue, pH, dose of H2O2 , ferrous sulfate concentration from the wastewater were studied. Experiments have shown that highly affect by the value of pH, Laboratory experiment conducted in the lab proved that pH should be between 3 4 to give the best results, It also proved that the increasing of the dose of both hydrogen peroxide and ferrous sulfate enhanced the removal efficiency of MB. 1Introduction: Dyes are used in many industries that are indispensable in Egypt and the world. They are used in the manufacture of textiles, paper, leather and plastics, which result in severe pollution of industrial wastewater due to the dyes, Scientists have observed the effect of dye toxicity on living organisms [2] , Air, water, land, humanity, plants, animals etc. get affected by industrial pollution. When industrial wastewater is discharged into the waterway, it is hazardous to aquatic life and humans [3]. As that Color is one of the most important criteria required to be controlled, because colored water bodies reduce light penetration, preventing photosynthesis of algae and submerged plants and are aesthetically undesirable [4]. Therefore, it is very difficult to break it biologically. scientists looked for an alternative Advanced oxidation processes are one of the best alternatives to industrial wastewater treatment, which contains non-biodegradable organic pollutants. These factors include the generation of a free hydroxyl root (OH), which degrades most organic pollutants quickly. Fenton is a well-studied AOP that uses hydrogen peroxide as an oxidant in the presence of a catalyst. Interaction in the advanced oxidation processes As follow, the organic pollutants of the industrial waste water react with hydrogen peroxide in the presence of iron salts such as ferrous sulfate on acidic and better within the limits 3-4 The resulting hydroxyl radicals resulting from the interaction between iron salt (II) and H2O2 attack the organic aggregates methylene blue as the unsaturated pigment molecule. y Department of public works engineering, faculty of Engineering, Tanta universit 2 university Mansoura Department of public works engineering, faculty of Engineering , Therefore, both the chromophore and the chromogen of the dye molecules will be destroyed and their color removed[1] . 2. Materials and methods: