Table 2 Comparison of the glucan-to-glucose conversion of cellulose in rice straw treated with different pretreatment methods followed by enzymatic hydrolysis
Pretreatment method | Solid loading (g/L) | Hydrolysis time (h) | Glucan conversion (%) | Reference |
|---|---|---|---|---|
20% aq. ammonia, 80 °C, 10 h | 100 | 30 | 92 | This study |
21% aq. ammonia, 69 °C, 10 h | 167 | 96 | 88.4 | Ko et al. (2009) |
20% aq. ammonia, 80 °C, 12 h | 100 | 72 | 94.4 | Kim et al. (2014) |
7% aq. ammonia, 80 °C, 12 h | 100 | 72 | 91.2 | Kim et al. (2014) |
2% NaOH, 80 °C, 3 h | 100 | 15 | 81.9 | This study |
2.96% NaOH, 81.79 °C, 56.66 min | 100 | 72 | 78.7 | Kim and Han (2012) |
4% NaOH, 25 °C, 12 h and 121 °C, 1 h | 80 | 96 | 81.2 | Takano and Hoshino (2018) |
5% NaOH, 100 °C, 3 h | 30 | 24 | 84.33 | Sophonputtanaphoca et al. (2018) |
7% NaOH, 80 °C, 4 h | 100 | 48 | 88.27 | Tsegaye et al. (2019) |
2% Ca(OH)2, 80 °C, 24 h | 100 | 15 | 55.6 | This study |
10% Ca(OH)2, 95 °C, 3 h | 100 | 72 | 48.5 | Cheng et al. (2010) |
15% Ca(OH)2, 25 °C, 72 h | 50 | 72 | 58.4 | Gu et al. (2015) |
1% H2SO4, 160 °C, 0.5 h | 50 | 72 | 57 | Lee et al. (2015) |
3.65% HCl, 4.9% H2SO4 or 3.27% H3PO4, 25 °C, 4 h and 121 °C, 1 h | 100 | 120 | 72,2% | Jampatesh et al. (2019) |
1% H2SO4, 1 h and steam explosion, 180 °C, 10 min residence time | 50 | 72 | 81.1% | Semwal et al. (2019) |