The Influence of Ionic Strength on the Electroassisted Filtration of Microcrystalline Cellulose
Artikel i vetenskaplig tidskrift, 2017

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.

local filtration

sedimentation

pressure electrofiltration

suspensions

dead-end filtration

electric-field

activated-sludge

flow

improvement

biopolymers

Författare

Jonas Wetterling

Chalmers, Kemi och kemiteknik, Kemiteknik, Skogsindustriell kemiteknik

Sandra Jonsson

Chalmers, Kemi och kemiteknik

Tuve Mattsson

Chalmers, Kemi och kemiteknik, Kemiteknik, Skogsindustriell kemiteknik

Wallenberg Wood Science Center (WWSC)

Hans Theliander

Wallenberg Wood Science Center (WWSC)

Chalmers, Kemi och kemiteknik, Kemiteknik, Skogsindustriell kemiteknik

Industrial & Engineering Chemistry Research

0888-5885 (ISSN) 1520-5045 (eISSN)

Vol. 56 44 12789-12798

Ämneskategorier

Kemiteknik

DOI

10.1021/acs.iecr.7b03575