Abstract
This work was conducted to determine the effect of oxygen
on hydrothermal liquefaction of softwood for the
production of valuable chemicals. Softwood was subjected
to liquefaction in the presence and absence of either 1.6
g/L sodium carbonate or 5 bar oxygen gas. The oxygen
supplementation diverted sugars from dehydration toward
oxidation resulting in 4-fold elevated yields of organic
acids. Dissolved sugars and furans showed maxima in
narrow temperature regions of 170-190 and 210-230 °C
while the yields (weight percentage based on dry wood) of
organic acids, phenolic substances, and bio-oil reached
their respective maxima of 10.4%, 3.5%, and 7.4% at
230-270 °C. These results of oxidative hydrothermal
liquefaction advance sustainable production of chemicals
from renewable lignocellulose.
Original language | English |
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Pages (from-to) | 3978-3984 |
Journal | ACS Sustainable Chemistry & Engineering |
Volume | 4 |
Issue number | 7 |
DOIs | |
Publication status | Published - 2016 |
MoE publication type | A1 Journal article-refereed |
Keywords
- cellulose
- lignin
- organic acids
- oxidation
- oxygen
- softwoods
- sugars
- aqueous
- lignocellulose
- renewable
- sustainable
- treatment