NDLI: Oxidation of Elemental Mercury by Active Species Generated From a Surface Dielectric Barrier Discharge Plasma Reactor

Content Provider	Springer Nature Link
Author	An, Jiu Tao Shang, Ke Feng Lu, Na Jiang, Yu Ze Wang, Tie Cheng Li, Jie Wu, Yan
Copyright Year	2013
Abstract	A surface dielectric barrier discharge plasma reactor was employed to study Hg$^{0}$ oxidation in coal-fired flue gas. The experimental results showed that 98 % of Hg$^{0}$ oxidation efficiency and 13.7 μg kJ$^{−1}$ of energy yield were obtained under a specific energy density (SED) of 7.9 J L$^{−1}$. Increasing SED was beneficial for Hg$^{0}$ oxidation due to higher production of active species. Higher initial concentration resulted in lower Hg$^{0}$ oxidation efficiency, but higher amount of Hg$^{0}$ oxidation. Water vapor inhibited Hg$^{0}$ oxidation because the generation of O$_{3}$ was suppressed. The presence of NO remarkably restrained Hg$^{0}$ oxidation, while SO$_{2}$ showed little effect on Hg$^{0}$ oxidation. Roles of active species in Hg$^{0}$ oxidation were examined under different gas atmospheres (O$_{2}$ and air), indicating that O$_{3}$ played an important role in Hg$^{0}$ oxidation. Deposits on the internal surface of the reactor were analyzed by energy dispersive spectroscopy and the product was identified as HgO.
Starting Page	217
Ending Page	228
Page Count	12
File Format	PDF
ISSN	02724324
Journal	Plasma Chemistry and Plasma Processing
Volume Number	34
Issue Number	1
e-ISSN	15728986
Language	English
Publisher	Springer US
Publisher Date	2013-10-18
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Surface discharge plasma reactor Active species Elemental mercury Mercury oxidation Inorganic Chemistry Mechanics Characterization and Evaluation of Materials Mechanical Engineering
Content Type	Text
Resource Type	Article
Subject	Chemistry Surfaces, Coatings and Films Condensed Matter Physics Chemical Engineering

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