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Table 2 Composition of the WIS fraction and hydrolysate of the pretreated materials

From: Combined production of biogas and ethanol at high solids loading from wheat straw impregnated with acetic acid: experimental study and techno-economic evaluation

Pretreatment temperature 190 °C 200 °C 210 °C
Composition of WIS (%)
 Glucan 54.5 57.0 57.2
 Xylan 10.1 5.7 3.3
 Arabinan 0.6 1.7 0.0
 Ash 2.1 1.9 1.9
 AIL 29.5 30.6 34.3
 ASL 3.2 3.1 3.4
Composition of hydrolysate (g/L)
 Byproducts, degradation products
  Formic acid 0.8 1.4 1.7
  Acetic acid 2.8 6.7 6.6
  Furfural 0.8 3.1 4.8
 Sugar monomers
  Glucose 0.6 0.9 1.6
  Xylose 3.8 9.1 7.9
  Arabinose 2.5 2.1 1.6
 Sugar oligomers
  Glucose 1.5 1.7 1.6
  Xylose 23.7 13.3 6.2
  Arabinose 1.0 0.3 0.0
  1. The analyses were performed in duplicates, and the relative standard deviations were maximum 6 %