Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Modelling filtration processes from local filtration properties: The effect of surface properties on microcrystalline cellulose
KTH, School of Chemical Science and Engineering (CHE), Centres, Wallenberg Wood Science Center. Chalmers University of Technology, Sweden.
KTH, School of Chemical Science and Engineering (CHE), Centres, Wallenberg Wood Science Center. Chalmers University of Technology, Sweden.
KTH, School of Chemical Science and Engineering (CHE), Centres, Wallenberg Wood Science Center. Chalmers University of Technology, Sweden.
2017 (English)In: Chemical Engineering Science, ISSN 0009-2509, E-ISSN 1873-4405, Vol. 165, p. 14-24Article in journal (Refereed) Published
Abstract [en]

The influence of structure and charge of particles surfaces on the cake filtration behaviour of microcrystalline cellulose was investigated. The local filtration properties were evaluated experimentally and used to model the overall filtration behaviour. At suspension conditions where the microcrystalline cellulose particles are charged, a large pressure drop was observed close to the filter medium, thereby indicating that a rate-limiting skin layer was formed. Measurements of the local solidosity of the filter cake indicated that a secondary filter cake, with a negligible filtration resistance, formed above the rate-limiting skin layer. This behaviour was not observed when the surface roughness of the particles was increased or when the surface charge of the particles was neutralised by making a change to the pH of the suspension. The filtration behaviour of particles with these surface properties was instead dominated by the formation of a compressible filter cake. Local filtration properties of compressible filter cakes determined experimentally were used to successfully model the overall filtration behaviour. The filtration model used an empirical relationship to describe the pressure dependence of the local solidosity of the filter cake along with a cell model to describe the relationship between the solidosity and the permeability of the filter cake.

Place, publisher, year, edition, pages
Elsevier Ltd , 2017. Vol. 165, p. 14-24
Keywords [en]
Cake filtration, Compressible filter cakes, Filtration, In-situ measurements, Local filtration properties, Modelling, Cellulose, Crystalline materials, Models, Surface roughness, Suspensions (fluids), Empirical relationships, Filter cakes, Filtration resistance, In-situ measurement, Micro-crystalline cellulose, Pressure dependence, Surface properties, Particles, Surfaces
National Category
Chemical Engineering
Identifiers
URN: urn:nbn:se:kth:diva-207420DOI: 10.1016/j.ces.2017.02.017ISI: 000399489200002Scopus ID: 2-s2.0-85013771447OAI: oai:DiVA.org:kth-207420DiVA, id: diva2:1098579
Note

QC 20170524

Available from: 2017-05-24 Created: 2017-05-24 Last updated: 2017-06-07Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Wetterling, JohnMattsson, TuveTheliander, Hans
By organisation
Wallenberg Wood Science Center
In the same journal
Chemical Engineering Science
Chemical Engineering

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 54 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf