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Influence of the flow regime on the efficiency of a gas-liquid two-phase medium filtration

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Biotechnology Techniques

Abstract

An easy technique, consisting in injecting air into the liquid stream, is proposed to enhance the permeate flux in crossflow filtration of a model fluid (i.e a bentonite suspension). The injected air promotes turbulence and increases the superficial crossflow velocity that leads to a regular disturbance of the boundary layer. A systematic study of different two-phase configurations points up that the slug flow seems the most appropriate regime. The resulting permeate rate is increased up to 140%, in comparison with the usual filtration processes.

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Authors and Affiliations

  1. Institut National des Sciences Appliquées, Centre de Bioingénierie G. Durand (URA CNRS 544, LA INRA), Complexe Scientifique de Rangueil, F31077, Toulouse cedex, France

    M. Mercier, C. Fonade & C. Lafforgue-Delorme

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  1. M. Mercier
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  2. C. Fonade
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  3. C. Lafforgue-Delorme
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Mercier, M., Fonade, C. & Lafforgue-Delorme, C. Influence of the flow regime on the efficiency of a gas-liquid two-phase medium filtration. Biotechnol Tech 9, 853–858 (1995). https://doi.org/10.1007/BF00158535

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  • DOI: https://doi.org/10.1007/BF00158535

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