Removal of gaseous elemental mercury by dielectric barrier discharge

The removal of elemental mercury (Hg0) with the reactive species produced from dielectric barrier discharge (DBD) was studied. The effects of the operating parameters, such as the applied voltage, residence time, initial concentration and co-existence of other pollutants, were investigated. The removal of Hg0 was significantly promoted by an increase in the applied voltage of the DBD reactor system. The presence of NO gas decreased the Hg0 removal efficiency within the range of input powers tested compared to the case of Hg0-only due to the competition for ozone between Hg0 and NO gas in the DBD reactor.