The use of fluid dynamic gauging in investigating the thickness and cohesive strength of cake fouling layers formed during cross-flow microfiltration
Artikel i vetenskaplig tidskrift, 2018

A common challenge during membrane filtration is cake fouling, whereby the build-up of material on the membrane surface reduces the permeate flux. Such fouling layers can also alter the selectivity of the separation. In this study, fluid dynamic gauging (FDG) is used in situ to investigate the cake fouling formed during cross-flow filtration of a model material: softwood Kraft lignin. FDG was used to estimate (i) the thickness of the cake layers (in the gm scale) and (ii) the local cohesive strength at different depths in the cake layer. Fouling layers formed at different transmembrane pressure (TMP) values were investigated. The estimated thickness of the cake layers increased with increasing TMP. However, it was difficult to capture the full cake thickness for the more loosely formed cakes layers. An increase in the cohesive strength of the cake was found to occur with increasing TMP values. (C) 2017 Elsevier B.V. All rights reserved.

Microfiltration

Fouling

In-situ measurement

Cross-flow filtration

Cake thickness

Författare

Tuve Mattsson

Chalmers, Kemi och kemiteknik, Kemiteknik, Skogsindustriell kemiteknik

William J. T. Lewis

University of Bath

Y. M. John Chew

University of Bath

Michael R. Bird

University of Bath

Separation and Purification Technology

1383-5866 (ISSN)

Vol. 198 25-30

Ämneskategorier

Pappers-, massa- och fiberteknik

Annan materialteknik

Strömningsmekanik och akustik

DOI

10.1016/j.seppur.2017.01.040

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Senast uppdaterat

2018-05-17