Table 2 The results of CCD matrix
From: Optimization of variables for cadmium and copper removal using magnetic nanocomposite
Variables | %R-Cadmium | %R-Copper | ||||||
|---|---|---|---|---|---|---|---|---|
Run | A (mg L−1) | B | C (g) | D (min) | Experimental | Predicted | Experimental | Predicted |
1 | 0 | 0 | 0 | 0 | 72.69 | 74.19 | 77.31 | 77.33 |
2 | 0 | 0 | 2 | 0 | 74.7 | 73.21 | 69.64 | 67.88 |
3 | 0 | 0 | 0 | 0 | 73.5 | 74.19 | 73.88 | 77.33 |
4 | − 1 | − 1 | − 1 | − 1 | 45.81 | 47.00 | 55.65 | 56.46 |
5 | − 1 | − 1 | − 1 | 1 | 62.78 | 63.47 | 73.04 | 72.86 |
6 | 1 | − 1 | − 1 | − 1 | 31.77 | 31.88 | 32.64 | 32.08 |
7 | 1 | 1 | 1 | 1 | 67.74 | 66.94 | 62.17 | 62.84 |
8 | 0 | 0 | 0 | − 2 | 46.28 | 44.24 | 54.85 | 54.38 |
9 | 0 | − 2 | 0 | 0 | 41.06 | 39.40 | 44.36 | 44.01 |
10 | 1 | 1 | − 1 | 1 | 53.67 | 54.39 | 53.04 | 53.23 |
11 | − 1 | 1 | 1 | 1 | 91.32 | 92.85 | 89.85 | 91.30 |
12 | 0 | 0 | 0 | 0 | 75.68 | 74.19 | 79.16 | 77.33 |
13 | − 1 | 1 | 1 | − 1 | 72.25 | 72.42 | 77.09 | 77.68 |
14 | 1 | − 1 | 1 | 1 | 55.48 | 56.93 | 49.6 | 50.98 |
15 | 0 | 0 | 0 | 0 | 75.53 | 74.19 | 74.71 | 77.33 |
16 | 0 | 0 | 0 | 2 | 77.74 | 77.74 | 82.46 | 80.56 |
17 | 0 | 0 | 0 | 0 | 72.93 | 74.19 | 78.17 | 77.33 |
18 | 0 | 0 | − 2 | 0 | 47.68 | 47.13 | 46.23 | 45.62 |
19 | − 1 | − 1 | 1 | − 1 | 59.6 | 60.53 | 68.42 | 69.12 |
20 | − 1 | 1 | − 1 | − 1 | 58.11 | 58.31 | 62.26 | 61.77 |
21 | − 1 | − 1 | 1 | 1 | 84.16 | 83.45 | 81.8 | 81.96 |
22 | 1 | 1 | 1 | − 1 | 48.96 | 49.91 | 51.98 | 53.05 |
23 | − 1 | 1 | − 1 | 1 | 73.37 | 72.29 | 77.33 | 78.94 |
24 | 0 | 2 | 0 | 0 | 61.1 | 60.72 | 63.19 | 61.17 |
25 | 2 | 0 | 0 | 0 | 44 | 42.41 | 40.18 | 38.95 |
26 | 0 | 0 | 0 | 0 | 74.81 | 74.19 | 80.74 | 77.33 |
27 | 1 | − 1 | 1 | − 1 | 35.93 | 37.40 | 42.1 | 41.97 |
28 | 1 | 1 | − 1 | − 1 | 42.7 | 43.80 | 38.56 | 39.89 |
29 | 1 | − 1 | − 1 | 1 | 44.74 | 44.96 | 43.75 | 44.64 |
30 | − 2 | 0 | 0 | 0 | 83.88 | 83.43 | 92.94 | 91.80 |