Application of Donnan equilibrium theory for improved bleaching process chemistry

Erkki Räsänen, Antero Laitinen, Adriaan van Heiningen, Pertti Koukkari

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    2 Citations (Scopus)

    Abstract

    In this work, Donnan equilibrium theory was used to predict the ionic form of the pulp after acidic washing of pulp. The results showed that the hydrolysis of hexenuronic acids could be performed utilizing the own acidity of pulp, i.e. converting the pulp to 'acidic' form by washing with acidic filtrate and water before hydrolysis. Selective hydrolysis utilizing the own acidity of pulp facilitates combination of hydrolysis and D stages and also effective recycling of bleaching filtrate.
    Original languageEnglish
    Title of host publication59th Appita Annual Conference and Exhibition
    Subtitle of host publicationIncorporating the 13th ISWFPC (International Symposium on Wood, Fibre and Pulping Chemistry)
    Place of PublicationCarlton
    PublisherAppita
    Pages321-327
    ISBN (Electronic)978-0-9585548-9-3
    Publication statusPublished - 2005
    MoE publication typeA4 Article in a conference publication
    Event59th Appita Annual Conference and Exhibition: Incorporating the 13th ISWFPC (International Symposium on Wood, Fibre and Pulping Chemistry) - Auckland, New Zealand
    Duration: 16 May 200519 May 2005
    Conference number: 59

    Publication series

    SeriesAppita Annual Conference Proceedings
    ISSN1443-5454

    Conference

    Conference59th Appita Annual Conference and Exhibition
    Country/TerritoryNew Zealand
    CityAuckland
    Period16/05/0519/05/05

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