The kinetics of simultaneous aqueous extraction and hydrolysis of spruce hemicelluloses

Jussi Rissanen, Henrik Grénman*, Chunlin Xu, Jens Krogell, Stefan Willför, Dmitry Murzin, Tapio Salmi

*Corresponding author for this work

Research output: Contribution to conferencePaper (not published)peer-review

Abstract

The aqueous extraction of hemicelluloses has gained an increasing interest with new emerging applications for hemicelluloses in the modern forest-based biorefinery concept. The extraction kinetics play a key role in their industrial utilisation. Pressurised hot water extraction of spruce sap wood was investigated in the temperature range 120–170°C using a large liquid-to-solid ratio in an intensified cascade reactor system. The results show significant temperature dependence of the extraction rate, albeit low influence of pH. Moreover, a clear dependence of the hydrolysis rate on the temperature and pH was observed. The molecular mass of the extracted hemicelluloses was influenced by the chip size. A kinetic model was developed for describing the extraction kinetics.

Original languageEnglish
Pages416-417
Number of pages2
Publication statusPublished - 2012
MoE publication typeO2 Other
Event4th Nordic Wood Biorefinery Conference, NWBC 2012 - Helsinki, Finland
Duration: 23 Oct 201225 Oct 2012

Conference

Conference4th Nordic Wood Biorefinery Conference, NWBC 2012
CountryFinland
CityHelsinki
Period23/10/1225/10/12

Fingerprint Dive into the research topics of 'The kinetics of simultaneous aqueous extraction and hydrolysis of spruce hemicelluloses'. Together they form a unique fingerprint.

Cite this