Table 6 Analysis of variance (ANOVA) for response surface quadratic model of Cu(II) elimination using GFLE nanocomposite.
From: Separation of copper ions by nanocomposites using adsorption process
Std. order | Coded variables | Responsea | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
X1 | X2 | X3 | X4 | YObs | YPer | |||||
1 | 2 | (− 1) | 170 | (− 1) | 67.50 | (− 1) | 30 | (− 1) | 150 | 138.71 |
2 | 4 | (+ 1) | 170 | (− 1) | 67.50 | (− 1) | 30 | (− 1) | 150 | 141.94 |
3 | 2 | (− 1) | 390 | (+ 1) | 67.50 | (− 1) | 30 | (− 1) | 305 | 298.19 |
4 | 4 | (+ 1) | 390 | (+ 1) | 67.50 | (− 1) | 30 | (− 1) | 342.5 | 337.04 |
5 | 2 | (− 1) | 170 | (− 1) | 67.50 | (− 1) | 50 | (+ 1) | 132.5 | 129.33 |
6 | 4 | (+ 1) | 170 | (− 1) | 67.50 | (− 1) | 50 | (+ 1) | 142.5 | 132.56 |
7 | 2 | (− 1) | 390 | (+ 1) | 67.50 | (− 1) | 50 | (+ 1) | 300 | 228.81 |
8 | 4 | (+ 1) | 390 | (+ 1) | 67.50 | (− 1) | 50 | (+ 1) | 337.5 | 327.67 |
9 | 2 | (− 1) | 170 | (− 1) | 142.5 | (+ 1) | 30 | (− 1) | 152.5 | 138.92 |
10 | 4 | (+ 1) | 170 | (− 1) | 142.5 | (+ 1) | 30 | (− 1) | 160 | 142.15 |
11 | 2 | (− 1) | 390 | (+ 1) | 142.5 | (+ 1) | 30 | (− 1) | 302.5 | 298.40 |
12 | 4 | (+ 1) | 390 | (+ 1) | 142.5 | (+ 1) | 30 | (− 1) | 342.5 | 337.25 |
13 | 2 | (− 1) | 170 | (− 1) | 142.5 | (+ 1) | 50 | (+ 1) | 127.5 | 129.54 |
14 | 4 | (+ 1) | 170 | (− 1) | 142.5 | (+ 1) | 50 | (+ 1) | 137.5 | 132.77 |
15 | 2 | (− 1) | 390 | (+ 1) | 142.5 | (+ 1) | 50 | (+ 1) | 305 | 289.02 |
16 | 4 | (+ 1) | 390 | (+ 1) | 142.5 | (+ 1) | 50 | (+ 1) | 332.5 | 327.87 |
17 | 1 | (− 2) | 280 | (0) | 105 | (0) | 40 | (0) | 185 | 190.50 |
18 | 5 | (+ 2) | 280 | (0) | 105 | (0) | 40 | (0) | 212.5 | 232.58 |
19 | 3 | (0) | 60 | (− 2) | 105 | (0) | 40 | (0) | 52.5 | 73 |
20 | 3 | (0) | 500 | (+ 2) | 105 | (0) | 40 | (0) | 422.5 | 427.58 |
21 | 3 | (0) | 280 | (0) | 105 | (0) | 20 | (− 2) | 192.5 | 215.92 |
22 | 3 | (0) | 280 | (0) | 105 | (0) | 60 | (+ 2) | 195 | 197.17 |
23 | 3 | (0) | 280 | (0) | 30 | (− 2) | 40 | (0) | 220 | 228.95 |
24 | 3 | (0) | 280 | (0) | 180 | (+ 2) | 40 | (0) | 225 | 229.37 |
25 | 3 | (0) | 280 | (0) | 105 | (0) | 40 | (0) | 226.3 | 229.16 |
26 | 3 | (0) | 280 | (0) | 105 | (0) | 40 | (0) | 227.5 | 229.16 |
27 | 3 | (0) | 280 | (0) | 105 | (0) | 40 | (0) | 227.5 | 229.16 |
28 | 3 | (0) | 280 | (0) | 105 | (0) | 40 | (0) | 227.5 | 229.16 |
29 | 3 | (0) | 280 | (0) | 105 | (0) | 40 | (0) | 227.5 | 229.16 |
30 | 3 | (0) | 280 | (0) | 105 | (0) | 40 | (0) | 226.4 | 229.16 |
