Continuous pilot-scale steam explosion of softwood bark residues

Abstract

Introduction Softwood bark: Softwood bark is traditionally combusted for energy. However, improved energy efficiency and recent increases in pulp mill capacities in the Nordic countries highlight softwood bark as a low-cost resource for conversion into higher value, renewable end-products. Carbocation scavangers: Wayman and Lora (1978) discovered that some aromatic compounds, especially 2-Naphthol, prevented the self-condensation of lignin under acidic conditions. Later, Pielhop et al (2015) showed that carbocation scavenger addition to pretreatment could benefit the enzymatic digestibility of pretreated substrates. Research objective: In commercially scalable pretreatment equipment and at industrially relevant steam explosion settings, systematically explore the effects of treatment temperature and 2-Naphtol addition on the carbohydrate composition of softwood bark.

Keywords

softwood bark

SLU Authors

• Thyrel, Mikael

  • Department of Forest Biomaterials and Technology, Swedish University of Agricultural Sciences
    

• Larsson, Sylvia

  • Department of Forest Biomaterials and Technology, Swedish University of Agricultural Sciences
    

UKÄ Subject classification

Paper, Pulp and Fiber Technology
Organic Chemistry
Chemical Process Engineering

Permanent link to this page (URI)

https://res.slu.se/id/publ/101288