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

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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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