Conference Presentation (After Call)

FZJ-2021-03474

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Modeling concentration polarization and fouling layers in cross-flow ultrafiltration

Park, G. (Corresponding author)FZJ* ; Naegele, G.FZJ*

2021

Please use a persistent id in citations: http://hdl.handle.net/2128/28669

Abstract: We present a boundary layer approximation (BLA) method for calculating the concentration-polarization (CP) layer and dispersion flow in crossflow ultrafiltration with a cylindrical membrane [1]. Results are discussed for various feed dispersions of colloidal particles, namely hard spheres, charge-stabilized particles [2], solvent-permeable non-ionic microgels [3, 4], and deswelling ionic microgels [5]. State-of-the-art methods are used for the gradient diffusion coefficient and viscosity entering the calculation of filtration profiles [3, 5]. We show that the BLA profiles are in quantitative agreement with predictions by a finite-element method [1]. The BLA results are compared with predictions by a similarity solution [4]. The BLA method is extended to conditions where a filter cake is formed at the membrane, with permeate flux results presented for a hard-sphere system [6].

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Contributing Institute(s):

1. Biomakromolekulare Systeme und Prozesse (IBI-4)

Research Program(s):

1. 5241 - Molecular Information Processing in Cellular Systems (POF4-524) (POF4-524)
2. SFB 985 B06 - Kontinuierliche Trennung und Aufkonzentrierung von Mikrogelen (B06) (221475706) (221475706)

Appears in the scientific report 2021

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Database coverage:

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