Open Access

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

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