NDLI: Oxidization of SO$_{2}$ by Reactive Oxygen Species for Flue Gas Desulfurization and H$_{2}$SO$

Content Provider	Springer Nature Link
Author	Bai, Mindi Hu, Jie
Copyright Year	2011
Abstract	A strong ionization dielectric barrier discharge was used to produce a high concentration of reactive oxygen species that were then injected into a simulated flue gas in a duct to remove SO$_{2}$ by oxidation. Sulfuric acid (H$_{2}$SO$_{4}$) was produced through the following two reactions: (1) O$_{3}$ oxidation of SO$_{2}$–SO$_{3}$, which then reacted with H$_{2}$O to produce H$_{2}$SO$_{4}$; and (2) reaction of O$_{2}$ $^{+}$ with H$_{2}$O to produce ·OH radicals, which then rapidly and non-selectively oxidized SO$_{2}$–H$_{2}$SO$_{4}$. When the molar ratio of reactive oxygen species to SO$_{2}$ was 4:1, the SO$_{2}$ removal efficiency was 94.6%, the energy consumption per cubic meter of flue gas was 13.3 Wh/m$^{3}$, the concentration of recovered H$_{2}$SO$_{4}$ was 4.53 g/l, and the H$_{2}$SO$_{4}$ recovery efficiency was 28.8%. The H$_{2}$O volume fraction in the simulated flue gas affected the SO$_{2}$ removal efficiency, whereas the O$_{2}$ and CO$_{2}$ volume fractions did not. These results prove that oxidation by reactive oxygen species is a feasible method for flue gas desulfurization.
Starting Page	141
Ending Page	152
Page Count	12
File Format	PDF
ISSN	02724324
Journal	Plasma Chemistry and Plasma Processing
Volume Number	32
Issue Number	1
e-ISSN	15728986
Language	English
Publisher	Springer US
Publisher Date	2011-11-22
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Reactive oxygen species ·OH radicals Removal SO$_{2}$ SO$_{2}$ removal efficiency H$_{2}$SO$_{4}$ Mechanical Engineering Nuclear Physics, Heavy Ions, Hadrons Characterization and Evaluation of Materials Inorganic Chemistry Mechanics
Content Type	Text
Resource Type	Article
Subject	Chemistry Surfaces, Coatings and Films Condensed Matter Physics Chemical Engineering

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