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Received January 21, 2008
Accepted May 1, 2008
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Novel method for removal of NOx and SO2 by sustainable electrochemical process using Ag(I)/Ag(II) redox mediator
Department of chemical Engineering, Sunchon National University, Sunchon 540-742, Korea
ismoon@sunchon.ac.kr
Korean Journal of Chemical Engineering, November 2008, 25(6), 1385-1388(4), 10.1007/s11814-008-0227-7
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Abstract
The objective of this work was to develop a process for removal of industrial waste gases like NO, NO2 and SO2 by electrochemically generated Ag(I)/Ag(II) redox mediator system in aqueous nitric acid medium. 100% removal efficiencies were achieved in these studies for removal of NOx and SO2 with Ag(II) ions in room temperature and atmospheric pressure. This Ag(I)/Ag(II) redox mediator system can be regenerated continuously during the scrubbing_x000D_
process.
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Shen CH, Rochelle GT, Environ. Sci. Technol., 32, 1994 (1998)
Senjo T, Kobayashi M, Japanese Patent 49130362 (1973)
Hartmann HF, Brown GM, Kean B, J. Inst. Fuel, 39, 325 (1996)
Brogren C, Karlsson HT, Bjerle I, Chem. Eng. Technol., 21(1), 61 (1998)
Yang CL, Shaw H, Perlmutter HD, Chem. Eng. Commun., 143, 23 (1996)
Robenson S, Natl. Environ. J. (1993)
Joshi JB, Mahajani VV, Juvekar VA, Chem. Eng. Commun., 33, 192 (1985)
Un UT, Koparal AS, Ogutveren UB, Sep. Purif. Technol., 53(1), 57 (2007)
Aurousseau M, Lapicque F, Storck A, Ind. Eng. Chem. Res., 33(2), 191 (1994)
Hoffmann P, Roizard C, Lapicque L, Venot S, Maire A, Institution of Chemical Engineers. Trans IchemE, 75B, 43 (1997)
Juttner K, Galla U, Schmieder H, Electrochim. Acta, 45(15-16), 2575 (2000)
Tzedakis T, Savall A, Chem. Eng. Sci., 46, 2269 (1991)
Balaji S, Chung SJ, Matheswaran M, Moon IS, Korean J. Chem. Eng., 24(6), 1009 (2007)
Matheswaran M, Balaji S, Chung SJ, Moon IS, Bull. Korean Chem. Soc., 28, 1387 (2007)
Matheswaran M, Balaji S, Chung SJ, Moon IS, Electrochim. Acta, 53(4), 1897 (2007)
Matheswaran M, Balaji S, Chung SJ, Moon IS, J. Ind. Eng. Chem., 13(2), 231 (2007)
Bringmann J, Ebert K, Galla U, Schmieder H, J. Appl. Electrochem., 27(7), 870 (1997)
Kokovkin VV, Chung SJ, Balaji S, Matheswaran M, Moon IS, Korean J. Chem. Eng., 24(5), 749 (2007)
