Influence of gas distributor design on the oxygen transfer characteristics of an airlift fermenter
| Autor: | Anne-Marie Wilhelm, Sittisin Bovonsombut, Jean-Pierre Riba |
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| Rok vydání: | 2007 |
| Předmět: |
Mass transfer coefficient
Chromatography Materials science Renewable Energy Sustainability and the Environment General Chemical Engineering Organic Chemistry Distributor Airlift Mixing (process engineering) Industrial fermentation Pollution Inorganic Chemistry Fuel Technology Chemical engineering Mass transfer Aeration Waste Management and Disposal Sparging Biotechnology |
| Zdroj: | Journal of Chemical Technology & Biotechnology. 40:167-176 |
| ISSN: | 1097-4660 0268-2575 |
| Popis: | The performances of two types of gas distributor (a perforated ring and a porous plate) in an airlift fermenter were compared in the measurement of gas holdup, overall mass transfer coefficient and mixing time, using four aqueous media containing different concentrations of four electrolytes, sugar and antifoam agent in order to simulate fermentation media. In pure water, a 50% higher kLa value was found with the porous plate; this difference was emphasized by adding salts or organic compounds so that the kLa could become two or three times higher with the porous plate. The type of sparger seemed to have very little effect on holdup ratios and mixing times. |
| Databáze: | OpenAIRE |
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