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Article Dans Une Revue Chemical Engineering Science Année : 2023

Plugging of Hollow Fiber Lumen by a gel : threshold operating conditions unraveled by simulations

Résumé

Membrane processes may experience gel plugs that require specific cleaning steps. This paper demonstrates with simulations how these plugs can occur. A physical model is used to describe the particular diffusive behavior of gels. This model is implemented in an OpenFOAM CFD simulation code to describe the dynamics of the gel layers when filtration is stopped. During this step of relaxation, it is shown that the gel can expand and lead to a plug with characteristic times in the order of minutes. The plugging is favored by a quick gel expansion and by a slow diffusion removal. The operating conditions leading to the gel plugging are analyzed and threshold conditions are unraveled. General practical recommendations on the process control are drawn from these results.

Domaines

Génie chimique
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Dates et versions

hal-04188272 , version 1 (25-08-2023)

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Adriana Ferreira, Patrice Bacchin, Pierre Aimar, Philippe Carvin, Ana Hipólito, et al.. Plugging of Hollow Fiber Lumen by a gel : threshold operating conditions unraveled by simulations. Chemical Engineering Science, 2023, 278, pp.118903. ⟨10.1016/j.ces.2023.118903⟩. ⟨hal-04188272⟩
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