Modelling of homogeneously catalyzed hemicelluloses hydrolysis in a laminar-flow reactor

Andrea Perez Nebreda, Vincezo Russo, M. Di Serio, Tapio Salmi, Henrik Grénman

    Research output: Contribution to journalArticleScientificpeer-review

    2 Citations (Scopus)

    Abstract

    Hydrolysis of hemicelluloses with acid catalysts yield different sugar monomers and oligomers, depending on the substrate as well as the process design. The hydrolysis kinetics are typically rather slow, which leads to requirements of long residence times, i.e. slow flow rates, in order to achieve adequate conversion. Hydrolysis experiments of two different polysaccharides – o-acetylgalactoglucomannan (GGM) and inulin - were conducted in an isothermal tubular continuous reactor in laboratory scale, working in the laminar flow regime. A dynamic mass balance-based reactor model was developed, including convection and molecular diffusion in axial and radial directions, as well as the self-accelerating kinetics of the reaction. The model gave a very satisfactory description of the experimental data. The behavior of the laminar flow reactor in the hemicellulose hydrolysis was further illustrated by numerical simulations.

    Original languageUndefined/Unknown
    Pages (from-to)758–766
    JournalChemical Engineering Science
    Volume195
    DOIs
    Publication statusPublished - 2019
    MoE publication typeA1 Journal article-refereed

    Keywords

    • Chemical Engineering

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