From: Optimization of biomass pretreatments using fractional factorial experimental design
Low level (−) | High level (+) | Central (0) | |
---|---|---|---|
Factor levels | |||
A-ball mill time (h) | 0 | 10 | 5 |
B-[H2SO4] (%v/v) | None | 2 | 1 |
C-[NaOH] (%w/v) | 0.5 | 4.5 | 2.5 |
D-temperature (°C) | 85 | 125 | 105 |
E-time (min) | 20 | 80 | 60 |
Samples and experimental conditions | Response | |||||
---|---|---|---|---|---|---|
Sample name | Ball mill time (h) | [H2SO4] step 1 (% v/v) | [NaOH] step 2 (% m/v) | Temp step 2 (°C) | Time step 2 (min) | Reducing sugar release (mg/g) |
EA1 | 0 | None | 0.5 | 85 | 100 | 86.4 |
EA2 | 10 | None | 0.5 | 85 | 20 | 84.3 |
EA3 | 0 | 2 | 0.5 | 85 | 20 | 103.7 |
EA4 | 10 | 2 | 0.5 | 85 | 100 | 108.0 |
EA5 | 0 | None | 4.5 | 85 | 20 | 168.0 |
EA6 | 10 | None | 4.5 | 85 | 100 | 204.5 |
EA7 | 0 | 2 | 4.5 | 85 | 100 | 179.7 |
EA8 | 10 | 2 | 4.5 | 85 | 20 | 165.8 |
EA9 | 0 | None | 0.5 | 125 | 20 | 124.4 |
EA10 | 10 | None | 0.5 | 125 | 100 | 124.3 |
EA11 | 0 | 2 | 0.5 | 125 | 100 | 105.7 |
EA12 | 10 | 2 | 0.5 | 125 | 20 | 109.5 |
EA13 | 0 | None | 4.5 | 125 | 100 | 143.0 |
EA14 | 10 | None | 4.5 | 125 | 20 | 173.9 |
EA15 | 0 | 2 | 4.5 | 125 | 20 | 163.3 |
EA16 | 10 | 2 | 4.5 | 125 | 100 | 169.7 |
EA17 | 5 | 1 | 2.5 | 105 | 60 | 143.1 |
EA18 | 5 | 1 | 2.5 | 105 | 60 | 140.3 |
EA19 | 5 | 1 | 2.5 | 105 | 60 | 143.2 |