Table 2 Chemical composition of bamboo chips after alkaline pretreatment
From: A biorefinery scheme to fractionate bamboo into high-grade dissolving pulp and ethanol
Alkali | Solid yield (%) | Composition (%) | |||
|---|---|---|---|---|---|
Silica | Cellulose | Hemicellulose | Lignin | ||
Untreated | NA | 1.12 ± 0.01 | 47.3 ± 0.32 | 21.8 ± 0.27 | 25.3 ± 0.63 |
NaOH | 87.2 ± 0.6 | 0.012 ± 0.01 | 51.86 ± 0.36 | 17.60 ± 0.44 | 27.97 ± 0.56 |
KOH | 86.1 ± 1.9 | 0.013 ± 0.01 | 52.24 ± 0.41 | 18.03 ± 0.28 | 28.03 ± 0.78 |
Ca(OH)2 | 90.4 ± 1.6 | 1.14 ± 0.03 | 50.80 ± 0.35 | 20.67 ± 0.46 | 27.09 ± 0.49 |
NH4OH | 90.9 ± 1.7 | 0.83 ± 0.04 | 50.42 ± 0.54 | 20.82 ± 0.39 | 27.22 ± 0.71 |