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KMID : 0380019950100020126
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Korean Journal of Biotechnology and Bioengineering
1995 Volume.10 No. 2 p.126 ~ p.130
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An On-Line Measurement of Ethanol Concentration by Membrane Gas Sensor
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김형찬/Kim, Hyung Chan
박민선/이영철/박기범/유익제/유무영/Park, Min Sun/Lee, Young Chul/Park, Ki Buem/Yoo, Yik Je/Yoo, Moo Young
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Abstract
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A membrane gas sensor was developed for the measurement of ethanol concentration during acetic acid fermentation. The fermentation broth including ethanol was permeated through the silicone membrane by synthetic air as a carrier gas and was detected by a semiconductor gas sensor. The optimum conditions of membrane gas sensor were 20ml/min of flow rate and 0.5mm of membrane thickness. In acetic acid fermentation, an on-line measurement of ethanol concentration was conducted by the pro
posed membrane gas sensor and then the on-line sennsor signal, was compared with the result of off1line analysis b
y gas chromatography. As a result, a correlated response over the range of 0-70g/P
was shown between membrane gas sensor and gas chromatography and this use of membrane gas sensor was experimentally ascertained for the monitoring and control of bioprocess like acetic acid fermentation.
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