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

S Kokko, J Niinimaki, M Zabihian, Anna Sundberg

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    16 Citations (Scopus)


    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.
    Original languageUndefined/Unknown
    Pages (from-to)386–391
    Number of pages6
    JournalNordic Pulp and Paper Research Journal
    Issue number3
    Publication statusPublished - 2004
    MoE publication typeA1 Journal article-refereed


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

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