Existing oxidation-absorption denitration processes have some disadvantages such as high cost, equipment corrosion and low oxidant utilisation ratio. In this work, a novel denitration process with a microbubble gas-liquid dispersion system (MBGLS) was proposed. The nitric oxide (NO) removal effects of MBGLS based on the various absorbents containing hydrogen peroxide (H 2 O 2 ), salinity and metal ions were investigated. The results showed that the MBGLS had an excellent NO removal performance because of hydroxyl radicals (·OH) released by the MBs. H 2 O 2 , NaCl, Fe 2+ and Mn 2+ could enhance the removal properties of MBGLS, but excessive NaCl was not conducive to the removal of NO. Under the optimal reaction conditions (absorbent pH = 8, 330 K, 0.4 mol/l H 2 O 2 and 800 ppm NO), the NO removal efficiency reached 87.7%. This new process is highly cost-effective and environment friendly and shows a good commercial application prospect in flue gas denitration.
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