The objective of this work was to study the effect of some operating condition on the simultaneous removal of NO and SO2from simulated flue gas in the lab-scale agitated bubbling reactor. The experimental results showed that NO removal efficiency increased with the increase in the molar ratio of O3/NO, while removal efficiency of SO2decreased. When absorption liquid changed from distilled water to Na2CO3solution, it is observed that removal efficiencies of NO and SO2increase with the increase in the concentration of Na2CO3solution. At 0.08 mol/L of Na2CO3solution, the removal efficiencies of SO2and NO are 100% and 93%, respectively