Table 2 Total gravimetric recovery (TGR) and composition of water insoluble solids resulting from sulphuric acid pretreatmentsa
Run | TR (ºC) | tR (min) | TGR (%) | Hemicellulose (%) | Cellulose (%) | Acid insoluble lignin (%) |
|---|---|---|---|---|---|---|
P1 | 185.9 | 5.0 | 60.0 | 3.4 (90.6)b | 47.1 (11.3) | 38.1 (13.8) |
P2 | 190.0 | 2.0 | 60.1 | 2.9 (92.0) | 46.8 (11.8) | 38.3 (13.2) |
P3 | 200.0 | 0.8 | 59.2 | 2.5 (93.2) | 43.5 (19.2) | 38.4 (14.1) |
P4 | 190.0 | 8.0 | 57.8 | 1.5 (96.2) | 45.1 (18.2) | 38.6 (15.7) |
P5 | 200.0 | 5.0 | 57.2 | 1.4 (96.3) | 43.9 (21.2) | 39.0 (15.8) |
P6 | 200.0 | 5.0 | 57.0 | 1.0 (97.4) | 44.8 (19.9) | 38.9 (16.3) |
P7 | 200.0 | 5.0 | 57.3 | 1.2 (96.9) | 43.3 (22.2) | 39.0 (15.8) |
P8 | 210.0 | 2.0 | 56.6 | 0.0 (100.0) | 45.0 (20.2) | 39.2 (16.2) |
P9 | 200.0 | 9.2 | 55.9 | 0.2 (99.6) | 45.4 (20.5) | 39.3 (17.2) |
P10 | 210.0 | 8.0 | 55.4 | 1.3 (96.8) | 41.0 (28.8) | 41.1 (14.2) |
P11 | 214.1 | 5.0 | 54.7 | 0.0 (100.0) | 44.1 (24.3) | 41.1 (15.2) |