Many technologies have been developed to remove SO2 and NOx from flue gas. Among them, flue gas desulfurization (FGD) and selective catalytic reduction (SCR) are most effective for SO2 and NOx removal respectively. Compared to the individual control techniques, simultaneous desulfurization and denitrification is advantageous due to less equipment demanded. Simultaneous SO2 and NOx removal from stationary sources can be achieved with high efficiency using copper on alumina catalyst sorbents (CuO/Al2O3) [5]. SO2 and NOx from flue gas are simultaneously removed by a dual bed of potassium-containing coal-pellets and calcium-containing pellets [6]. Microwave has been widely used in environment protection [7]. Microwave is also applied to a pyrolytic carbon such as activated carbon and char, enhancing the reaction of sulfur dioxide (SO2) and nitrogen oxides (NO) with carbon [8]. The simultaneous treatment with the accelerated electronic beams and the microwaves can increase the removal efficiency of NOx and SO2, about 80% of NOx and more than 95% of SO2 were removed by precipitation with ammonia [9]. It was reported that the reaction efficiency of microwave reduction of NOx could be up to 98% when microwave energy was applied continuously [10]. SO2 and NOx emissions from coal combustion were simultaneously reduced by calcium magnesium acetate