Dissolution of wood components during hot water extraction of spruce
Journal article, 2023

The purpose of this study was to investigate the autohydrolysis of softwood, which is the main chemical operation in both hot water extraction and steam explosion. Control of the process and monitoring its course were ensured by the careful choice of experimental setup and conditions: a milled spruce material was extracted in a small flow-through reactor to minimize degradation of the dissolved material and to enable analysis of the resulting liquors extracted at selected time points. The obtained liquid and solid fractions were analyzed for sugar composition and acetic acid concentration. The results showed that partially degraded hemicelluloses were extracted; hemicelluloses side chains were cleaved off and detected as monomers, while deacetylation was limited. Chain scissions of cellulose were observed as a result of autohydrolysis.

Author

Joanna Wojtasz-Mucha

Chalmers, Chemistry and Chemical Engineering, Chemical Technology

Merima Hasani

Chalmers, Chemistry and Chemical Engineering, Chemical Technology

Hans Theliander

Chalmers, Chemistry and Chemical Engineering, Chemical Technology

Tappi Journal

0734-1415 (ISSN)

Vol. 22 5 329-343

Subject Categories

Chemical Process Engineering

Polymer Technologies

DOI

10.32964/TJ22.5.329

More information

Latest update

7/7/2023 7