In this resecarh the improvement of SO3 absorption via oxidation of SO2 ,which is a by product from a chemical plant in Damascus , using Ozone and active carbon – was stadied . The main purpose of this research paperis : . To obtian acceptable concentrations of sulphuric acid in various aqueous mediums . . To eelease SO2gas as a by product frome this flow . The lab study assures that the absorption of sulphuroxides differ from medium to other with or not existance of active carbon in aqueous medium and bubbling the gas oxides and distillated water only and also the bubbling of Ozone gas in gasoxides.