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 language | English |
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| Pages | 416-417 |
| Number of pages | 2 |
| Publication status | Published - 2012 |
| MoE publication type | O2 Other |
| Event | 4th Nordic Wood Biorefinery Conference, NWBC 2012 - Helsinki, Finland Duration: 23 Oct 2012 → 25 Oct 2012 |
Conference
| Conference | 4th Nordic Wood Biorefinery Conference, NWBC 2012 |
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| Country/Territory | Finland |
| City | Helsinki |
| Period | 23/10/12 → 25/10/12 |
Funding
This research was part of the activities at the Åbo Akademi Process Chemistry Centre. This study was financed by Forestcluster Ltd. and the Finnish Funding Agency for Technology and Innovation (Tekes) within the framework of the Future Biorefinery (FuBio) Joint Research 2 programme.