Reduction of Exhaust Emission from a Stoichiometric Engine Using Non-Thermal Plasma Generated by a Corona Discharge Device

Caren, R. P.; Ekchian, J. A.; Roth, G.; Cowart, Jim S.; Noordzij, L. B.

doi:10.4271/1999-01-3636

Cited by 3 publications

(2 citation statements)

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“…XPS analysis from the treatment of flue gas B (which contains NO) indicated the formation of mercurous sulfate or mercuric oxide, consistent with photochemical oxidation of mercury with SO 2 and/or O 2 . The works by Gunning, − Caren, , Tabatabaie-Raissi, , and Stromberg 51,52 suggest that H 2 O and HCl might be important components of flue gas as the precursors to reactive hydroxyl and chlorine radicals.…”

Section: Discussionmentioning

confidence: 99%

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Photochemical Removal of Mercury from Flue Gas

Granite

Pennline

2002

Ind. Eng. Chem. Res.

307

246

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Photochemical reactions of mercury with various constituents in flue gas produced by burning coal could be an attractive alternative to dry sorbent- or wet scrubber-based processes for mercury control. The sensitized oxidation of elemental mercury using 253.7-nm ultraviolet radiation has been extensively studied. The photochemistry of elemental mercury in simulated flue gases was examined using quartz flow reactors. Mercury-containing simulated flue gases at temperatures between 80 and 350 °F were irradiated with 253.7-nm ultraviolet light. Results are presented for the photochemical removal of elemental mercury from simulated flue gases, as well as from nitrogen mixtures that contain oxygen, water vapor, or nitrogen oxide. Optimization of the process parameters, including light intensity, is discussed. The implications of photochemical oxidation of mercury with respect to direct ultraviolet irradiation of flue gas for mercury control, analysis of gases for mercury content, and atmospheric reactions are discussed.

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Section: Discussionmentioning

confidence: 99%

“…Caren , discovered that reactive hydroxyl radicals form when automobile exhaust is irradiated with 253.7-nm light. Hydroxyl radicals, obtained from moisture in the exhaust, were demonstrated to be effective oxidizing agents for carbon monoxide and unburned hydrocarbons.…”

Section: Introductionmentioning

confidence: 99%