水滴噴霧パルス放電による色素分解においての酸素ガスの効果

カテゴリ: 論文誌(論文単位)

グループ名: 【A】基礎・材料・共通部門

発行日: 2011/08/01

タイトル(英語): Effect of Oxygen Gas on the Decomposition of Dye by Pulsed Discharge in Water Droplet Spray

著者名: 能勢　泰祐（積水化学工業（株）京都研究所），横山　祐三（積水化学工業（株）京都研究所），中村　晶（積水化学工業（株）京都研究所），南谷　靖史（山形大学大学院理工学研究科）

著者名(英語): Taisuke Nose (Kyoto R&D Labs., Sekisui Chemical Co., Ltd.), Yuzo Yokoyama (Kyoto R&D Labs., Sekisui Chemical Co., Ltd.), Akira Nakamura (Kyoto R&D Labs., Sekisui Chemical Co., Ltd.), Yasushi Minamitani (Graduate School of Science and Engineering, Yamagata University)

キーワード: パルス放電，酸素ガス，ヒドロキシルラジカル，オゾン，過酸化水素，インジゴカルミン　　pulsed discharge，oxygen gas，hydroxyl radical，ozone，hydrogen peroxide，indigo carmine

要約(英語): Effect of O2 on the decolorization of indigo carmine and on the production of dissolved species such as NO2-, NO3-, O3 and H2O2 in the treatment water by pulsed discharge in water droplet spray was investigated by controlling the O2/N2 ratios as carrier gases in the reactor. The decolorization rate gradually increased with rise in O2 ratio, which reached a constant value in the range of 50% to 90% O2 ratio and decreased in pure O2. The maximum value was about 2 times as high as that of 20% O2 ratio. The decolorization efficiency was not affected by gas flow rate in the range of 4 L/min to 50 L/min. NO2- in the treatment water was only detected in pure N2, but NO3- was produced in O2/N2. NO2- added to the treatment water was not oxidized in pure N2, but was perfectly converted to NO3- in O2/N2. These results implied that hydroxyl radical produced in gas phase does not directly contribute to the oxidation of substances in water. O3 concentration gradually increased with rise in O2 ratio, whereas H2O2 concentration decreased. In the range of 50 to 80% O2 ratio, O3 and H2O2 concentrations were approximately constant value, similar to the trend of decolorization rate. Moreover rate constants on various gas mixing ratio of O2/N2 were determined from the kinetics study. These results suggested that hydroxyl radical produced in the treatment water by the chain reactions of O3 and hydroperoxy radical (HO2・) plays an important role of the decomposition of molecules in water.

本誌: 電気学会論文誌A（基礎・材料・共通部門誌） Vol.131 No.8 （2011） 特集：電気電子工学関連分野における教育フロンティア

本誌掲載ページ: 648-658 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejfms/131/8/131_8_648/_article/-char/ja/