title: Polarity effect of pulsed corona discharge for the oxidation of gaseous elemental mercury.
abstract: The effect of polarity on the oxidation of Hg(0) was examined in the presence of O(2) via a pulsed corona discharge (PCD). The experimental result showed no difference in the energy yield of Hg(0) oxidation at both positive and negative PCDs (∼8 μg Hg Wh(-1) at following conditions: total flow rate=2 L min(-1) (Hg(0)=50 μg Nm(-3), O(2)=10%, and N(2) balance), temperature=150°C, and specific energy density=5-15 Wh Nm(-3)). This suggests that the positive PCD process used to control gaseous air pollutants may play an essential key role in Hg(0) oxidation because it consumes enough energy (∼15 Wh Nm(-3)) but an electrical precipitator could not because it consumes less energy (∼0.3 Wh Nm(-3)) to oxidize Hg(0).
authors.affiliation: Environmental Research Department, Research Institute of Industrial Science and Technology, Hyoja Dong, Pohang, Kyoungbuk 790-600, Republic of Korea.
authors.forename: Youngchul
authors.initials: Y
authors.lastname: Byun
authors.forename: Dong Jun
authors.initials: DJ
authors.lastname: Koh
authors.forename: Dong Nam
authors.initials: DN
authors.lastname: Shin
authors.forename: Moohyun
authors.initials: M
authors.lastname: Cho
authors.forename: Won
authors.initials: W
authors.lastname: Namkung
mesh_terms: D004553:Electric Conductivity; D004563:Electrochemistry / Q000379:methods*; D005740:Gases / Q000737:chemistry*; D008628:Mercury / Q000737:chemistry*; D010084:Oxidation-Reduction; D010100:Oxygen / Q000737:chemistry
chemical_list: D005740:Gases; D008628:Mercury; D010100:Oxygen