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Table 2 Properties of hydrolysis and soda liquors at different temperatures and residence times

From: A process for producing lignin and volatile compounds from hydrolysis liquor

Sample ID Temp.,°C Time, min pH Hydrolysis liquor Soda liquor lignin
Mono sugar Polysugar Hydrolysis lignin Furfural Acetic acid
g/L %a g/L % Mw, g/mol g/L %a Mw, g/mol g/L %a g/L %a g/L %a Mw, g/mol
1 170 15 3.46 3.79 1.9 11.85 5.9 1135 11.6 5.7 21,902 0.32 0.2 1.16 0.6 0.8 0.6 2977
2 180 15 3.39 5.93 3.2 16.75 9.0 823 11.8 6.3 21,201 0.69 0.4 1.20 0.6 0.9 0.7 3239
3 190 15 3.48 12.52 6.1 7.61 3.7 526 14.3 7.0 20,166 3.86 1.9 1.32 0.6 2.7 2.1 3120
4 170 45 3.53 5.25 2.9 14.87 8.2 881 10.7 5.9 23,609 0.44 0.2 1.25 0.7 0.9 0.7 2620
5 180 45 3.37 10.70 5.8 15.89 8.7 527 11.0 6.0 22,324 1.21 0.7 1.24 0.7 1.4 1.1 2725
6 190 45 3.21 12.91 6.8 6.13 3.3 504 14.0 7.4 22,559 4.5 2.4 0.89 0.5 2.0 1.6 2786
  1. a% removed from wood