No abstract

A DC corona discharge reactor was applied to remove sulfur dioxide (SO 2 ) and benzene (C 6 H 6 ) from N 2 -O 2 -H 2 O mixed gas in the temperature range from room temperature to 400 C. When SO 2 was removed, the temperature elevation caused the decrease of the removal efficiency of SO 2 . On the other hand, the removal efficiency of C 6 H 6 was not significantly influenced by the temperature elevation. In the simultaneous removal of SO 2 and C 6 H 6 in the relatively low temperature range below 200 C, the removal efficiency of SO 2 is significantly inhibited by coexisting C 6 H 6 . When the simultaneous removal was conducted in the high temperature range, the removal efficiency of SO 2 was not sensitive against the coexisting C 6 H 6 . On the other hand, the removal efficiency of C 6 H 6 was almost independent of coexisting SO 2 at all temperatures. A hypothesis of reaction mechanism was discussed based on radical reactions with SO 2 and C 6 H 6 to explain the trend observed in the experiment.