大気圧パルス放電によるメチレンブルー分解

DOI DOI Web Site Web Site Web Site ほか2件をすべて表示 一部だけ表示 被引用文献11件 参考文献16件
  • 生駒 晋
    室蘭工業大学　工学部　電気電子工学科
  • 佐藤 孝紀
    室蘭工業大学　工学部　電気電子工学科 室蘭工業大学　環境科学・防災研究センター
  • 伊藤 秀範
    室蘭工業大学　工学部　電気電子工学科

書誌事項

タイトル別名
  • Decomposition of Methylene Blue in an Aqueous Solution using a Pulsed-discharge Plasma at Atmospheric Pressure
  • タイキアツ パルス ホウデン ニ ヨル メチレンブルー ブンカイ
  • Decomposition of Methylene Blue in an Aqueous Solution Using a Pulsed‐Discharge Plasma at Atmospheric Pressure
公開日
2009
DOI
  • 10.1541/ieejfms.129.237
  • 10.1002/eej.21217
公開者
一般社団法人 電気学会

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説明

Decomposition characteristics of methylene blue in an aqueous solution by the exposure of pulsed-discharge plasma generated above a water surface are investigated for different background-gas composition (N2-O2 mixture and Ar-O2 mixture) and electrode configuration (1 needle and 55 needles). It is likely that OH radicals, produced by the reaction between H2O vapour and high energy electrons in the pulsed plasma expanding on the water surface, contribute to the decomposition of methylene blue. Further, O3 is found to contribute to methylene-blue decomposition at high oxygen concentration, and slight contribution of OH radicals, produced by the reaction between N2 molecules excited in metastable state (N2(A3Σu+)) and H2O vapour, is observed in pure N2. In N2-O2 mixture, O3 concentration decreases significantly and simultaneously NOx is produced by the pulsed plasma. Therefore, NOx probably destroys O3 and inhibits O3 generation. In Ar-O2 mixture, the high decomposition rate of methylene blue is obtained independent of O3 concentration. It is likely that Ar atoms in metastable states, such as 3P2 and 3P0, contribute to decomposition of methylene blue. Higher decomposition rate of methylene blue and higher O3 concentration are observed when streamer-like discharge is generated with 55 needle-electrodes, as compared to the single needle-electrode.

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