Table 2.
The actual parameters of the three factors-three levels in the Box-Behnken experiment.
| Level | Factor A: IL Concentration (mol/L) | Factor B: Liquid-Solid Ratio (mL/g) | Factor C: Ultrasonic Time (min) |
|---|---|---|---|
| -1 | 0.5 | 20 | 30 |
| 0 | 1 | 40 | 60 |
| 1 | 1.5 | 60 | 90 |
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