Article Dans Une Revue Chemical Engineering and Technology Année : 2023

Gas Holdup and Flow Regimes in a Thin‐Gap Bubble Column with Newtonian and Non‐Newtonian Liquid Phase

Résumé

Abstract The influence of confinement and rheological properties of the liquid phase on the gas holdup and flow regimes in a 2 mm gap bubble column intended as an intensified photobioreactor at high cell concentration is investigated. The results indicate that at a given superficial gas velocity ( U Gsup ), the gas holdup is higher with viscous or non‐Newtonian (nN) fluids than in water and also in a thin‐gap column than in an unconfined one. This behavior increases when confinement ratio increases. Regime transitions occur at lower U Gsup for nN fluids compared to water and for a thin‐gap column compared to classical columns. This information constitutes a first step toward the identification of optimal operating conditions for efficient operation of microalgae culture.

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Dates et versions

hal-04701165 , version 1 (18-09-2024)

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Abdallah Haydar, Walid Blel, Hélène Marec, Caroline Gentric. Gas Holdup and Flow Regimes in a Thin‐Gap Bubble Column with Newtonian and Non‐Newtonian Liquid Phase. Chemical Engineering and Technology, 2023, 46 (6), pp.1218-1227. ⟨10.1002/ceat.202200561⟩. ⟨hal-04701165⟩
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