Dielectric Barrier Discharge Coupling Catalytic Oxidation for Highly Efficient Hg(0) Conversion

[Image: see text] In this work, we prepared CuCe/Ti catalysts in a dielectric barrier discharge (DBD) reactor and proposed a new method for flue gas mercury oxidation using DBD coupling CuCe/Ti catalyst. Our experiments verified the oxidation efficiency of flue gas Hg(0) (η(Hg)) and clarified the influence of O(2) content, NO concentration, SO(2) concentration, water vapor content, and discharge voltage on η(Hg). The oxidation mechanism of Hg(0) in the DBD-CuCe/Ti reactor was also illustrated. The Hg(0) oxidation experiment on the simulated flue gas (70 μg/m(3) Hg(0) + 300 mg/m(3) NO + 1000 mg/m(3) SO(2) + 6%O(2)) with a flow rate of 1 L/min showed that when the amount of catalyst was 1.25 g and the discharge voltage was 9.5 kV, a η(Hg) of 93% can be achieved, which indicates that the DBD coupling CuCe/Ti technology is suitable for Hg(0) conversion and flue gas mercury removal.