Transient Characteristics of Oxygen Electrode and Determination of Volumetric Oxygen Transfer Coefficient in a Bubble Column.
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- Doi Toshifusa
- Department of Materials Science and Engineering, Kochi National College of Technology
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- Osaki Nobukazu
- Department of Materials Science and Engineering, Kochi National College of Technology
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- Nagayama Kazuhito
- Department of Materials Science and Engineering, Kochi National College of Technology
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- Furusaki Shintaro
- Graduate School of Engineering, The University of Tokyo
Bibliographic Information
- Other Title
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- 酸素電極の過渡特性と気泡塔の液相酸素物質移動容量係数の測定
- サンソ デンキョク ノ カト トクセイ ト キホウトウ ノ エキソウ サンソ
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Abstract
We investigated the transient characteristics of an oxygen electrode with a 50 μm PTFE membrane, which was employed to determine the liquid-phase volumetric oxygen transfer coefficient kLa' in a bubble column with air-water and a 65 vol. % glycerol solution system. The transient response curve of the probe in this case was represented by the semi-empirical equations proposed in this work. These equations have three parameters, i.e., kLa', the response time lag τ and the inverse first-order time constant k of the probe. These parameters were estimated by the nonlinear curve fitting of the experimental response data. The τ value was independent of superficial gas velocity and decreased with the rise in temperature of the liquid. The k value increased with increasing superficial gas velocity. It was found that the first-order delay of the response curve depended on the k/kLa' value and increased rapidly below k/kLa'= 5. The k/kLa' values of water and 65 vol.% glycerol solution were in the range of about 2 to 6. The kLa' value determined from the slope of the strait line portion of the semi-logarithmic plot of the experimental response data was about 80 to 95% of that determined by the nonlinear curve fitting at k/kLa'= 2.
Journal
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- KAGAKU KOGAKU RONBUNSHU
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KAGAKU KOGAKU RONBUNSHU 22 (2), 301-308, 1996
The Society of Chemical Engineers, Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390001204509147776
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- NII Article ID
- 10002668345
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- NII Book ID
- AN00037234
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- ISSN
- 13499203
- 0386216X
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- NDL BIB ID
- 3936990
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed