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The Influence of Ionic Strength on the Electroassisted Filtration of Microcrystalline Cellulose
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Centres, Wallenberg Wood Science Center. Department of Chemistry and Chemical Engineering, Chalmers University of Technology.
Department of Chemistry and Chemical Engineering, Chalmers University of Technology.
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Centres, Wallenberg Wood Science Center. Department of Chemistry and Chemical Engineering, Chalmers University of Technology.
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Centres, Wallenberg Wood Science Center. Department of Chemistry and Chemical Engineering, Chalmers University of Technology.
2017 (English)In: Industrial & Engineering Chemistry Research, ISSN 0888-5885, E-ISSN 1520-5045, Vol. 56, no 44, p. 12789-12798Article in journal (Refereed) Published
Abstract [en]

The production of materials such as microfibrillated cellulose and cellulose nanocrystals is gathering significant research interest by combining mechanical strength and toughness with a low density, biodegradability and renewability. However, one of the challenges with production on an industrial scale is to obtain an energy-efficient solid-liquid separation which is difficult because of the high specific filtration resistance of these materials. This study investigates electroassisted filtration as a method to facilitate the dewatering of cellulosic materials and the influence of ionic strength on the electrofiltration behavior. Electroassisted filtration is found to improve the dewatering rate of the studied cellulosic material, and the potential improvement compared to pressure filtration increased with the specific surface area of the solid material. Increasing the ionic strength of the system increased the power demand of the electroassisted filtration, and the major potential for industrial application is thus for systems with a limited ionic strength.

Place, publisher, year, edition, pages
American Chemical Society , 2017. Vol. 56, no 44, p. 12789-12798
Keywords [en]
Biodegradability, Cellulose, Dewatering, Energy efficiency, Filtration, Strength of materials, Cellulose nano-crystals, Cellulosic material, Micro-crystalline cellulose, Microfibrillated cellulose, Pressure filtration, Solid liquid separation, Specific filtration resistance, Strength and toughness, Ionic strength, MicrOCRystalline Cellulose
National Category
Paper, Pulp and Fiber Technology
Identifiers
URN: urn:nbn:se:kth:diva-227054DOI: 10.1021/acs.iecr.7b03575Scopus ID: 2-s2.0-85033582591OAI: oai:DiVA.org:kth-227054DiVA, id: diva2:1203573
Funder
Knut and Alice Wallenberg Foundation
Note

QC 20180503

Available from: 2018-05-03 Created: 2018-05-03 Last updated: 2018-05-03Bibliographically approved

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Theliander, Hans

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