Simultaneous removal of SO_2 and NO by MnO_2/H_2SO_4 solution

Simultaneous removal of SO2 and NO from simulated flue gas,with MnO2/H2SO4 solution as the absorbent,Fe3+ as the catalyst,was investigated in a self-designed bubble reactor.Factors such as MnO2 concentration,Fe3+concentration,pH value,reaction temperature,the concentration of NO and SO2,oxygen content in flue gas,flow rate of flue gas,on the removal efficiencies were examined.Experimental results show that MnO2 concentration,Fe3+concentration,flue gas flow rate,and reaction temperature,as well as the concentration of SO2 and NO,had significant influence on NO removal.But pH value and oxygen content in the flue gas has little influence on NO removal.Under the experimental conditions,removal efficiency of SO2 was constantly over 98%,and the highest removal efficiency of NO reached 70.9%.