Table 1.
Chemical composition of raw material and metal chloride-assisted hydrotropic pretreated materials along with byproduct concentration in pretreatment spent liquor.
| Sample Abbreviation 1 | Solid | Spent Liquor | |||||
|---|---|---|---|---|---|---|---|
| Glucan (%) |
Xylan (%) |
Acid Soluble Lignin (%) | Klason Lignin (%) | Solid Yield (%) |
Glucose (g/L) |
Xylose (g/L) | |
| APMP | 46.07 | 16.03 | 2.92 | 17.73 | 100 | – | – |
| P | 51.18 | 14.70 | 1.07 | 12.13 | 80.18 | ND | 1.1 |
| P–FeCl3 | 53.31 | 13.02 | 0.67 | 10.80 | 65.94 | 0.2 | 1.6 |
| P–AlCl3 | 58.59 | 13.22 | 0.83 | 9.17 | 63.32 | 0.1 | 1.6 |
| P–CuCl2 | 61.64 | 13.02 | 0.74 | 9.03 | 64.47 | 0.2 | 1.7 |
1 APMP and P stand for alkaline peroxide mechanical pulp and p-TsOH hydrolysis, respectively.