Multimodal zeta potential distribution in chemical birch pulp process water was studied by filtrating the water into fractions and subsequently measuring zeta potential, charge quantity, turbidity and organic substances. Filtrations were made using 12 μm, 1.6 μm, 1.2 μm, 0.45 μm and 0.1 μm membranes. The number of populations with different zeta potentials diminished with filtration. With the unfiltrated water, 12 μm and 1.6 μm filtrates, three or four different zeta potentials were observed. When the filtration was performed with a 1.2 μm membrane or smaller, only two populations of different zeta potentials were detected. The charge quantity steadily approached zero from unfiltrated water towards a 1.6 μm fraction filtrate. After that, it remained constant. Turbidity constantly decreased when using smaller membranes. The amount of wood extractives decreased to half with 0.1 μm filtration. No significant difference in the amount of carbohydrates and lignin between the filtrated fractions and the unfiltrated water was detected. A comparison dealing with particle size analysis between two different apparatuses was also made.
Skip Nav Destination
Article navigation
Research Article|
December 01 2007
Investigation of multimodal zeta potential and size distribution in chemical pulp process water
T. Leiviskä;
1Department of Process and Environmental Engineering, University of Oulu, P.O. Box 4300, FIN-90014 University of Oulu, Finland (E-mail: jaakko.ramo@oulu.fi)
E-mail: tiina.leiviska@oulu.fi
Search for other works by this author on:
J. Rämö
J. Rämö
1Department of Process and Environmental Engineering, University of Oulu, P.O. Box 4300, FIN-90014 University of Oulu, Finland (E-mail: jaakko.ramo@oulu.fi)
Search for other works by this author on:
Water Sci Technol (2007) 56 (11): 123–129.
Citation
T. Leiviskä, J. Rämö; Investigation of multimodal zeta potential and size distribution in chemical pulp process water. Water Sci Technol 1 December 2007; 56 (11): 123–129. doi: https://doi.org/10.2166/wst.2007.770
Download citation file:
Sign in
Don't already have an account? Register
Client Account
You could not be signed in. Please check your email address / username and password and try again.
Impact Factor 1.915
CiteScore 3.3 • Q2
13 days submission to first
decision
1,439,880 downloads in 2021