Novel insight in carbohydrate degradation during alkaline treatment

Kaarlo Nieminen, Markus Paananen, Lidia Testova, Herbert Sixta

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific


    We present a mathematical model for the yield loss and decline in polymerization of carbohydrates. The model is applicable to the treatment of cellulose and hemicellulose in alkaline media and it features the actions of peeling, stopping and alkaline hydrolysis on the polymer chains. The reaction rates are estimated by fitting the model to experimental data. Experiments conducted at several temperatures enable the evaluation of activation energies for the reactions. The peeling reaction is further divided into primary and secondary peeling, depending on whether it originates from an initial reducing end group or from a reducing end group created by alkaline hydrolysis. We are able to evaluate the impact of the different processes on degradation and the portion of polymer chains possessing reducing end groups.
    Original languageEnglish
    Title of host publication13th European workshop on lignocellulosics and pulp
    Place of PublicationSpain
    PublisherInstitute of Natural Resources and Agrobiology of Seville
    Number of pages606
    ISBN (Print)978-84-616-9842-4
    Publication statusPublished - Jul 2014
    MoE publication typeB3 Non-refereed conference publication
    EventEuropean Workshop on Lignocellulosics and Pulp - Seville, Spain
    Duration: 24 Jun 201427 Jun 2014
    Conference number: 13


    WorkshopEuropean Workshop on Lignocellulosics and Pulp
    Abbreviated titleEWLP


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