Decomposition of Nitrogen Oxides by Surface Discharge-induced Plasma Chemical Process

Hyun Choon Kang; In Sung Woo; An Soo Kang

Journal of Industrial and Engineering Chemistry, Vol.6, No.4, 231-237, July, 2000

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Decomposition of Nitrogen Oxides by Surface Discharge-induced Plasma Chemical Process

Hyun Choon Kang^†, In Sung Woo¹, and An Soo Kang²

Department of Environmental Engineering, Cheju College of Technology, Cheju 690-714, Korea
¹Department of Safety Engineering, Incheon University, Incheon 402-749, Korea
²Department of Chemical Engineering, Myongjin University, Yongin 449-728, Korea

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Nitrogen oxides (NO_x) were investigated using Surface discharge-induced Plasma Chemical Processing (SPCP) to obtain an optimum Process variable and maximum decomposition efficiency. At a frequency of 10 kHz, the highest decomposition efficiency of 94.3%, for NO and 84.7% for NO₂ was observed at power consumptions of 19.8 W and 20 W, respectively. The decomposition efficiency increased with an increasing residence time and a decreasing initial concentration of NO_x. The highest decomposition efficiency was obtained with an electrode diameter of 3 mm. For the electrode material, the decomposition efficiency changed with the electrode material in the order of tungsten > copper > aluminum. The decomposition efficiency increased with the CH₄ content and NO_x was almost completely removed with an efficiency of 99% respectively.

Keywords:discharge plasma;NO_x;decomposition efficiency;power efficiency

[References]

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Nomoto Y, Ohkubo T, Kanazawa S, Adachi T, IEEE Trans. Ind. Appl., 31, 1458 (1995)
Wang R, Zhang B, Sun B, Wang N, Wu Y, Gong W, Liu S, J. Electrostatics, 34, 355 (1995)
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Ito T, Kishida H, Ehara Y, Miyamoto H, Proc. Inst. Electrolics, 25p, B1, p. 86 (1994)
Breault RW, McLarnon C, NATO ASI Series, G34, Part B, p. 252 (1993)
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Gasparik R, Gasparikova M, Ihara S, Satoh S, Yamabe C, Proc. of NEDO Symp. on Non-Thermal Discharge Plasma Technology for Air Pollution Control, p. 144, Japan, Tokyo (1997)
Matzing H, NATO ASI Series, G34 Part A, p. 61 (1993)
Kang HC, Ph.D. Thesis, Myongji University, Korea (1999)
Kanazawa S, Chang JS, Round GF, Sheng G, Ohkubo T, Nomoto Y, Adachi T, J. Electrostatics, 40-41, 656 (1997)

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[1] Frank NW, NATO ASI Series, G34, Part B, pp. 27 ~ 32 (1993)

[2] Nomoto Y, Ohkubo T, Kanazawa S, Adachi T, IEEE Trans. Ind. Appl., 31, 1458 (1995)

[3] Wang R, Zhang B, Sun B, Wang N, Wu Y, Gong W, Liu S, J. Electrostatics, 34, 355 (1995)

[4] Clements JS, Mizuno A, Finney WC, Davis RH, IEEE Trans. Ind. Appl., 25, 62 (1989)

[5] Mizuno A, Yamazaki Y, Ito H, Yoshida H, IEEE Trans. Ind. Appl., 28, 535 (1992)

[6] Masuda S, Hosogawa S, Yu XL, Sakakibara K, Katoh S, Sakai S, IEEE Trans. Ind. Appl., 29, 781 (1993)

[7] Oda T, Takahashi T, Nakono H, Masuda S, IEEE Trans. Ind. Appl., 29, 787 (1993)

[8] Masuda S, Hosokawa S, Tu X, Wang Z, J. Electrostatics, 34, 415 (1995)

[9] Penetrante BM, Hsiao MC, Kuthi A, Burkhart CP, Bayless JR, Proc. of NEDO Symp. on Non-Thermal Discharge Plasma Technology for Air Pollution Control, p. 70, Japan, Tokyo (1996)

[10] Oda T, Takahashi T, Yamashita R, Ohno T, Proc. of NEDO Symp. on Non-Thermal Discharge Plasma Technology for Air Pollution Control, p. 5, Japan, Tokyo (1996)

[11] Ito T, Kishida H, Ehara Y, Miyamoto H, Proc. Inst. Electrolics, 25p, B1, p. 86 (1994)

[12] Breault RW, McLarnon C, NATO ASI Series, G34, Part B, p. 252 (1993)

[13] Penetrante BM, NATO ASI Series, G34, Part A, p. 66 (1993)

[14] Dean JA, Lange's Handbook of Chemistry, 14th ed, McGraw-Hill, Inc. (1992)

[15] Gasparik R, Gasparikova M, Ihara S, Satoh S, Yamabe C, Proc. of NEDO Symp. on Non-Thermal Discharge Plasma Technology for Air Pollution Control, p. 144, Japan, Tokyo (1997)

[16] Matzing H, NATO ASI Series, G34 Part A, p. 61 (1993)

[17] Kang HC, Ph.D. Thesis, Myongji University, Korea (1999)

[18] Kanazawa S, Chang JS, Round GF, Sheng G, Ohkubo T, Nomoto Y, Adachi T, J. Electrostatics, 40-41, 656 (1997)