Decolorization of Rhodamine B in Water by Pulsed High-Voltage Gas Discharge
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概要
- 論文の詳細を見る
The red coloring in water colored by an organic dye, rhodamine B, was removed in as fast as 10 s by pulsed gas discharge. Water was atomized by air and flowed as a mist down the central part of a reactor and as a water film down the inner wall. Radicals, such as ozone, OH and O, which were produced by radial barrier discharge, decolorized rhodamine B. Color was completely removed at a low water flow rate and high total input energy, but the removal efficiency was highest at a high water flow rate and low total input energy. By using oxygen, the color removal and removal efficiency were improved due to higher ozone concentration produced than in the case of using air. The efficiency was improved in proportion to the initial concentration of rhodamine B. The highest removal efficiency of 8.2 μg/J was obtained at 22 mg/L and a water flow rate of 150 mL/min. The results of the discharge performed in Ar suggest that the radicals produced from water considerably contributed to the decolorization. By changing the reactor radius, we clarified that the water flowing down the reactor wall as a water film was decolorized as well as the atomized water in the reactor.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2003-03-15
著者
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Fujiwara Yasuhiro
Department Of Gastroenterology Osaka City University Graduate School Of Medicine
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Nakagawa Yoshiro
Department Of Electrical Engineering Faculty Of Engineering Osaka City University
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Mitamura Susumu
Department of Electrical Engineering, Graduate School of Engineering/Faculty of Engineering, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
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Nishitani Takashi
Department of Environment and Resources, Osaka City Institute of Public Health and Environmental Sciences, 8-34 Tojo-cho, Tennoji-ku, Osaka 543-0026, Japan
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Fujiwara Yasuhiro
Department of Breast Oncology and Medical Oncology, National Cancer Center Hospital
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Fujiwara Yasuhiro
Department of Water Research and Management, Osaka City Institute of Public Health and Environmental Sciences, 8-34 Tojo-cho, Tennoji-ku, Osaka 543-0026, Japan
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Nakagawa Yoshiro
Department of Electrical Engineering, Graduate School of Engineering/Faculty of Engineering, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
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Nakagawa Yoshiro
Department of Applied Chemistry, University of Osaka Prefecture
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