Simultaneous Removal of NO sub(x) and SO sub(2) by a Nonthermal Plasma Hybrid Reactor

In previous research, a new nonthermal plasma hybrid reactor was developed for removing SO sub(2) from flue gas. The high efficiency and cost performance were proven through experiments. However, the research on simultaneously removing SO sub(2) and NO sub(x) has not yet been reported. The objective of this work is to find a high-efficiency multifunctional catalyst for simultaneous removal of SO sub(2) and NO sub(x) from flue gas. In addition, we also studied the effects of temperature and discharge power on the SO sub(2) and NO sub(x) oxidation fraction to find the optimum operation condition. The investigated catalysts are NiO/TiO sub(2),V sub(2)O sub(5)/TiO sub(2), and TiO sub(2). The discharge power varies from 9 to 15 W, and the reaction temperature range is 200-450 degree C. The experimental results show that NiO/TiO sub(2) is the best among the three catalysts. Meanwhile, temperature and discharge power have a positive influence on SO sub(2) oxidation in the case of using NiO/TiO sub(2), while the effects on NO sub(x) and NO are negative.