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Sustainable Chemical Processes

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 %
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