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Table 1 Parameters and test levels selected for development of the central composite design

From: Development and characterization of a high-solids deacetylation process

Experimental variable

Axial (−2)

−1

Center point (0)

+1

Axial (+2)

Solids loading (wt%)

10

15

20

25

30

Temperature (°C)

60

70

80

90

100a

Time (min)

45

60

75

90

105

NaOH loading (g/g acetate)

0.5

1

1.5

2

2.5

  1. a Temperature was held just under 100 °C to prevent evaporation and vessel pressurization