A1 Journal article (refereed)
Detailed modeling of the kraft pulping chemistry : carbohydrate reactions (2020)

Fearon, O., Nykänen, V., Kuitunen, S., Ruuttunen, K., Alén, R., Alopaeus, V., & Vuorinen, T. (2020). Detailed modeling of the kraft pulping chemistry : carbohydrate reactions. AIChE Journal, 66(8), Article e16252. https://doi.org/10.1002/aic.16252

JYU authors or editors

Publication details

All authors or editors: Fearon, Olesya; Nykänen, Vesa; Kuitunen, Susanna; Ruuttunen, Kyösti; Alén, Raimo; Alopaeus, Ville; Vuorinen, Tapani

Journal or series: AIChE Journal

ISSN: 0001-1541

eISSN: 1547-5905

Publication year: 2020

Volume: 66

Issue number: 8

Article number: e16252

Publisher: John Wiley & Sons

Publication country: United States

Publication language: English

DOI: https://doi.org/10.1002/aic.16252

Publication open access: Openly available

Publication channel open access: Partially open access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/68743


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.

Keywords: pulping; modelling (representation); chemical reactions; reaction mechanisms; carbohydrates

Free keywords: carbohydrates; kraft pulping; modeling; reaction kinetics; reaction mechanism

Contributing organizations

Ministry reporting: Yes

Reporting Year: 2020

JUFO rating: 2

Last updated on 2022-20-09 at 13:19