Hydrothermal pretreatment of wood by mild steam explosion and hot water extraction
Journal article, 2017

The aim of this work was to compare the two most common hydrothermal pre-treatments for wood mild steam explosion and hot water extraction - both with the prospect of enabling extraction of hemicelluloses and facilitating further processing. Although both involve autohydrolysis of the lignocellulosic tissue, they are performed under different conditions: the most prominent difference is the rapid, disintegrating, discharge employed in the steam explosion opening up the structure. In this comparative study, the emphasis was placed on local composition of the pre-treated wood chips (of industrially relevant size). The results show that short hot water extraction treatments lead to significant variations in the local composition within the wood chips, while steam explosion accomplishes a comparably more even removal of hemicelluloses due to the advective mass transport during the explosion step.

Pre-treatment

Hot water extraction

Autohydrolysis

Local properties

Steam explosion

Author

Joanna Wojtasz-Mucha

Chalmers, Chemistry and Chemical Engineering, Chemical Technology, Forest Products and Chemical Engineering

Merima Hasani

Chalmers, Chemistry and Chemical Engineering, Chemical Technology, Forest Products and Chemical Engineering

Wallenberg Wood Science Center (WWSC)

Hans Theliander

Chalmers, Chemistry and Chemical Engineering, Chemical Technology, Forest Products and Chemical Engineering

Wallenberg Wood Science Center (WWSC)

Bioresource Technology

0960-8524 (ISSN)

Vol. 241 120-126

Subject Categories

Biological Sciences

DOI

10.1016/j.biortech.2017.05.061

More information

Latest update

5/23/2018