Elimination of Remazole Blue-B by Advanced Oxidation Methods

Different methods have been used to reduce or eliminate organic pollutants from wastewater and groundwater, Advanced oxidation methods means the cold combustion of organic impurities in the aqueous media by means of chemical oxidation methods, or what is called mineralization of organic pollutants.Remazol blue B. was taken as the model pollutant, (Ozone/ Hydrogen peroxide/ Ultraviolet light), were used to eliminate the pollutant from wastewater, which means the fast oxidation to produce CO₂, H₂O, NO₃^-, SO₄^-2 etc. The effect of pH, the initial concentration of hydrogen peroxide, the rate of ozonation, dose of UV and the influence of temperature were studied to find the optimum conditions for oxidation of this organic pollutant. Experimentally, a special system was constructed to follow the oxidation reaction of ozone with impurities. Experimental results indicated that the oxidation of Remazol blue B was faster at higher pH than at lower pH. Using suitable analytical methods such as visible spectrometry techniques, Chemical Oxygen Demand (COD), detailed kinetics and reaction mechanisms have been estimated.Recommendations, including advantages, disadvantages, optimum conditions, applicability and the economical side of similar purification / recycling projects designed to be used for treating  or recycling  industrial waste  water, are introduced.

Keywords: Advanced oxidation technology (AOT)- mineralization of organic pollutants- hardly oxidized impurities- remazol blue B- (COD)-ozone- ultraviolet radiation- H₂O₂.