Influence of Gas Bubbling and the Addition of Metal Oxide Particles on the Ultrasonic Degradation of Methylene Blue
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概要
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The ultrasound irradiation and simultaneous gas bubbling into aqueous solution of methylene blue has been studied in order to establish a cost-effective process for wastewater treatment. Various gases such as rare gases, oxygen, nitrogen and CO2 as well as the mixture of Ar and the other gas have been examined. Among the examined gases, the mixture of argon and oxygen of 70:30 in volume ratio showed the maximum degradation ratio of ca. 45% after treatment of 30 min, which is around 10 percent higher than that of pure Ar bubbling. Furthermore, the influence of the addition of variety of metal oxide particles, including SiO2, TiO2 and Al2O3 has been examined. The degradation ratio increased by 10 percent to ca. 54% by the addition of alumina of the composition of 2 g/L for the treatment time of 30 min.
著者
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TERAKADO Osamu
Department of Materials Science and Engineering, Graduate School of Engineering, Nagoya University
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Terakado Osamu
Department Of Materials Science And Engineering Graduate School Of Engineering Nagoya University
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Sato Ryo
Department of Applied Chemistry, Graduate School of Engineering, Tohoku University, 6-6-11-1302 Aoba, Aramaki, Aoba-ku, Sendai 980-8579, Japan
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Hirasawa Masahiro
Department of Materials Processing Engineering, Faculty of Engineering, Nagoya University
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SATO Ryo
Department of Materials Science and Engineering, Graduate School of Engineering, Nagoya University
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