Table 1.4
Main chemical composition of some lignocellulosic feedstocks (Zhao et al. 2012)
Feedstock
Cellulose (%)
Xylan (%)
Galactan (%)
Araban (%)
Lignin (%)
Mannan (%)
Extractives (%)
Ash (%)
Hybrid poplar
48.6
14.6
0.3
0.3
21.8
0.5
NAÃ
0.7
White oak
43.6
18.0
0.4
2.4
23.2
2.9
NA
0.6
Red oak
43.4
18.9
NAÃ
1.9
25.8
2.7
NA
NA
Walnut
46.2
16.5
NA
1.8
21.9
2.6
NA
NA
Maple
44.9
17.3
NA
2.8
20.7
2.9
NA
0.4
Corn stover
40.9
18.0
1.0
3.0
16.6
0.6
7.3
9.7
Wheat straw
38.2
21.2
0.7
2.5
23.4
0.3
13.0
10.3
Rice straw
34.2
24.5
NA
NA
11.9
NA
17.9
16.1
Switchgrass
31.0
20.4
0.9
2.8
17.6
0.3
17.0
5.8
ÃNA: data not available
1 Biofuels: Types and Process Overview
7