The Uptake Coefficient of I2 on Various Aqueous Surfaces |
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Authors: | Akinori Takami Teruo Kondo Azumi Kado Seiichiro Koda |
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Affiliation: | (1) Department of Chemical System Engineering, School of Engineering, The University of Tokyo, Hongo, 7-3-1, Bunkyo-ku, Tokyo, 113-8656, Japan |
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Abstract: | Uptake coefficient of I2 on aqueous surfaces was measured by using an impinging flow method. Dependence of the uptake coefficient on the gas-liquid contact time and pH was investigated. The uptake coefficient was (3.7± 2.0)×10–4 at 120 ms, 293 K and pH = 5.6. In the alkaline region, the uptake coefficient was larger by one order of magnitude than that in the neutral and acidic region. The I2 uptake on KI solutions and synthetic sea water solutions was also measured. According to the analysis by the reactive uptake model, the uptake of I2 was shown to be mainly determined by liquid phase reactions and the accommodation coefficient of I2 on aqueous surfaces was estimated to be 0.01. |
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Keywords: | uptake coefficient mass accommodation coefficient I2 impinging flow method gas-liquid mass transfer |
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