Effects of white water treatment on the paper properties of mechanical pulp - A laboratory study

A1 Journal article (refereed)

Internal Authors/Editors

Publication Details

List of Authors: Kokko S, Niinimaki J, Zabihian M, Sundberg A
Publication year: 2004
Journal: Nordic Pulp and Paper Research Journal
Journal acronym: NORD PULP PAP RES J
Volume number: 19
Issue number: 3
Start page: 386
End page: 391
Number of pages: 6
ISSN: 0283-2631


The study concluded that efficient removal of extractives from the waters increased tensile index and brightness of the sheets compared to sheets made from unpurified waters. Lipophilic extractives were efficiently removed from peroxidebleached filtrate; resulting in an increase in the tensile index from 20 Nm/g to 30 Nm/g. Removal of extractives was not as critical as the bleaching method regarding the brightness of the sheets. A high concentration of wood substances in the model waters increased the drainage time, especially when using unbleached model waters.


deresination, dissolved and colloidal substances, mechanical pulp, paper properties, peroxide bleaching, tensile strength, water treatment, wood hemicelluloses

Last updated on 2019-23-10 at 03:04