Abstract
With overall higher use of wood and wooden materials in
the future, the importance of recycled wood will
increase. Recycled wood is currently used for the
production of wood based composites and for combustion.
In the future, use of recycled wood will also be
important as feedstock for biorefineries for the
production of bio-based chemicals and biofuels. The
present paper gives preliminary results on the
feasibility of A I recycled wood (German classification,
natural wood only treated mechanically) in a steam
explosion and organosolv pre-treatment process. The
presence of inorganic pollutants and non-wooden material
in recycled wood material was investigated. The effect of
recycled wood heterogeneity (e.g., variable wood species
and wide particle size distribution) on performance of
wood pretreatment and subsequent enzymatic hydrolysis was
also evaluated. Microeconomic analysis of lignocellulosic
feedstock for a biorefinery using organosolv cooking was
calculated with various price scenarios and various
proportions of recycled wood instead of fresh beech
chips. The results show that the concentration of
inorganic pollutants is higher than in fresh wood but
below the limit values for polluted wood. Preliminary
results on steam explosion and ethanol based organosolv
cooking without an acid catalyst showed typical behaviour
of softwood for recycled wood of A I quality in respect
of hydrolysability, thus being a potential future raw
material for sugar production. A I recycled wood can be
used in a biorefinery without major problems and can
significantly improve the economics of investment in an
industrial scale biorefinery.
Original language | English |
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Pages (from-to) | 711-723 |
Journal | European Journal of Wood and Wood Products |
Volume | 74 |
Issue number | 5 |
DOIs | |
Publication status | Published - 2016 |
MoE publication type | A1 Journal article-refereed |
Keywords
- Lignin
- wood chip
- Steam explosion
- Waste wood
- Organosolv