Table 1
Coded and uncoded levels of independent variables employed in RSM design.
| Uncoded variables (X
i
) |
|||
|---|---|---|---|
|
X
1
|
X
2
|
X
3
|
|
| Coded variables (Z i ) | Initial NaOH concentration (C0), [% w/w] | Scrubbing solution temperature (T), [°C] | Liquid-to-gas volumetric ratio (L/G) × 103, [v/v] |
| −1 | 10 | 40 | 15 |
| 0 | 15 | 50 | 20 |
| 1 | 20 | 60 | 25 |