Table 5 Experimental design and independent variables, using central composite design, and the corresponding response for cyanide biodegradation
Std. order | Temperature (°C) | Rotation speed (rpm) | Inoculation amount (%) | Response |
|---|---|---|---|---|
1 | 30 | 130 | 1.5 | 52.9 |
2 | 44 | 130 | 1.5 | 63.5 |
3 | 30 | 230 | 1.5 | 84.0 |
4 | 44 | 230 | 1.5 | 32.2 |
5 | 30 | 130 | 5 | 24.0 |
6 | 44 | 130 | 5 | 74.2 |
7 | 30 | 230 | 5 | 49.3 |
8 | 44 | 230 | 5 | 56.4 |
9 | 25 | 180 | 3.25 | 92.8 |
10 | 49 | 180 | 3.25 | 96.1 |
11 | 37 | 65 | 3.25 | 69.2 |
12 | 37 | 264 | 3.25 | 63.1 |
13 | 37 | 180 | 0.31 | 32.2 |
14 | 37 | 180 | 6.19 | 24.7 |
15 | 37 | 180 | 3.25 | 59.4 |
16 | 37 | 180 | 3.25 | 47.7 |
17 | 37 | 180 | 3.25 | 49.7 |
18 | 37 | 180 | 3.25 | 52.7 |
19 | 37 | 180 | 3.25 | 61.0 |
20 | 37 | 180 | 3.25 | 45.2 |