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Detailed modeling of the kraft pulping chemistry: carbohydrate reactions
Department of Bioproducts and Biosystems, Aalto University, School of Chemical Engineering, Aalto, Finland.
Laboratory of Applied Chemistry, University of Jyväskylä, Jyväskylä, Finland.
Neste Engineering Solutions Oy, Porvoo, Finland.
Department of Bioproducts and Biosystems, Aalto University, School of Chemical Engineering, Aalto, Finland.
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2020 (English)In: AIChE Journal, ISSN 0001-1541, E-ISSN 1547-5905, no 16252Article in journal (Refereed) Published
Abstract [en]

The article introduces a detailed model for carbohydrate chemistry in kraft pulping. This article is continuation to the modeling work carried out for hot water extraction and chemical pulp bleaching. The model includes galactoglucomannan, xylan, and cellulose acid–base equilibria, in addition to peeling, stopping, and alkaline hydrolysis reactions of the same carbohydrates, as well as hexenuronic acid formation and degradation reactions. The Arrhenius parameters were applied from the literature or regressed against experimental data in the present study. The model is very successful in predicting the experimental data of carbohydrate reactions during kraft pulping. Many features of the pulping-related model can be applied to specific fractionation chemistry considerations. The detailed knowledge on carbohydrates composition at any stage of pulping gives possibility for further development of biorefinery cases based on kraft pulping, such as biofuel and chemicals production.

Place, publisher, year, edition, pages
John Wiley & Sons, 2020. no 16252
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:miun:diva-40659DOI: 10.1002/aic.16252ISI: 000534087800001Scopus ID: 2-s2.0-85085001920OAI: oai:DiVA.org:miun-40659DiVA, id: diva2:1506539
Available from: 2020-12-03 Created: 2020-12-03 Last updated: 2021-05-03Bibliographically approved

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