Removal of SO₂ by Gas-Phase Oxidation Using DBD Micro-gap Discharge Plasma

Authors: Bai, Mindong; Zhang, Zhitao; Bai, Mindi; Pan, Qiaoyuan; Bai, Xiyao

Source: Journal of Advanced Oxidation Technologies, Volume 12, Number 2, July 2009 , pp. 220-225(6)

Publisher: Science and Technology Network Inc.

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Abstract:

In this paper, four kinds of discharge at high pressure (≥10⁵Pa) were discussed. The removal of SO₂ from simulated flue gases was experimentally investigated using a DBD (dielectric barrier discharge) micro-gap discharge. Hydroxyl (OH·) radicals of high concentration was produced using the ionization of O₂ and H₂O to further the conversion of SO₂ into H₂SO₄ in the absence of any catalyst or absorbent. With the test and analysis, a number of H₂SO₄ droplets were captured using a semi-dry electrostatic precipitator (ESP). Therefore, a new gas-phase oxidation method for the removal of SO₂ without NH₃ additive is found.

Keywords: OH radicals; Gas-phase oxidation; Removal of SO2; H2SO4 droplets

Document Type: Research article

Affiliations: 1: Key laboratory of strong electric-field ionization discharge of Liaoning Province; Physics Department, Dalian Maritime University, Dalian 116026, Liaoning, P. R. China

Publication date: 2009-07-01

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The Journal of Advanced Oxidation Technologies (JAOTs) provides an international forum that accepts papers describing basic research and practical applications of these technologies. The Journal publishes articles in the form of critical reviews and research papers focused on the science and engineering of advanced oxidation technologies for water, air and soil treatment.
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