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The use of fluid dynamic gauging in investigating the thickness and cohesive strength of cake fouling layers formed during cross-flow microfiltration
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Centres, Wallenberg Wood Science Center. Chalmers Univ Technol, Dept Chem & Chem Engn, SE-41296 Gothenburg, Sweden.;Chalmers Univ Technol,.
Univ Bath, Dept Chem Engn, Bath BA2 7AY, Avon, England..
Univ Bath, Dept Chem Engn, Bath BA2 7AY, Avon, England..
Univ Bath, Dept Chem Engn, Bath BA2 7AY, Avon, England..
2018 (English)In: Separation and Purification Technology, ISSN 1383-5866, E-ISSN 1873-3794, Vol. 198, p. 25-30Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
ELSEVIER SCIENCE BV , 2018. Vol. 198, p. 25-30
Keyword [en]
Microfiltration, Fouling, Cross-flow filtration, In-situ measurement, Cake thickness
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-227726DOI: 10.1016/j.seppur.2017.01.040ISI: 000430776800005Scopus ID: 2-s2.0-85011880018OAI: oai:DiVA.org:kth-227726DiVA, id: diva2:1205782
Conference
12th World Filtration Congress (WFC), APR 11-15, 2016, Taipei, TAIWAN
Funder
Knut and Alice Wallenberg Foundation
Note

QC 20180515

Available from: 2018-05-15 Created: 2018-05-15 Last updated: 2018-05-15Bibliographically approved

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