Influences of co-existing components in flue gas on simultaneous desulfurization and denitrification using microwave irradiation over activated carbon

The influences of co-existing components including O2, CO2 and H2O in flue gas on simultaneous desulfurization and denitrification using microwave irradiation over activated carbon are mainly studied in this paper. The results show that SO2 inhibits the denitrification reaction on some extent. The water vapor in the flue gas has some inhibitory effect on desulfurization while accelerating the denitrification reaction. But once the moisture content is more than 9.0%, both the efficiencies of desulfurization and denitrification will decrease together. The presences of O2 and CO2 can enhance the efficiencies of desulfurization and denitrification. But high concentrations of O2 and CO2 will cause the loss of activated carbon, thereby inhibit desulfurization and denitrization. Furthermore, the efficiencies of removing SO2 and NOx using this technique is higher than 90% and the reaction products are friendly to the environment. The results have a great value for the process optimization of simultaneous desulfurization and denitrification using microwave irradiation over activated carbon.