Table 2 Experimental design and results of the Box Ben design for the decolourization of MG by nano bentonite and MgO impregnated clay.
Run | pH | Concentration | Temperature | Dosage | Nano bentonite | MgO impregnated clay |
|---|---|---|---|---|---|---|
1 | 0 | 0 | 0 | 0 | 97.13 | 90.0855 |
2 | − 1 | 0 | 0 | − 1 | 92.429 | 91.4188 |
3 | 0 | 0 | 0 | 0 | 97.212 | 93.7188 |
4 | 0 | 0 | 0 | 0 | 97.114 | 96.6815 |
5 | 0 | 1 | 0 | 1 | 97.212 | 97.329 |
6 | 1 | 0 | 0 | 1 | 98.409 | 97 |
7 | 0 | − 1 | 0 | 1 | 96.51 | 98.9544 |
8 | 0 | 1 | 1 | 0 | 96.118 | 97.1882 |
9 | − 1 | 0 | 1 | 0 | 92.401 | 93.0563 |
10 | 0 | 1 | 0 | − 1 | 96.016 | 96.412 |
11 | 1 | 0 | 0 | − 1 | 97.392 | 93.8901 |
12 | 0 | 0 | 1 | − 1 | 98.05 | 97.9188 |
13 | 0 | − 1 | 0 | − 1 | 98.72 | 97.0188 |
14 | 0 | 0 | − 1 | − 1 | 96.413 | 97.8514 |
15 | 0 | 0 | − 1 | 1 | 97.119 | 98.8514 |
16 | − 1 | 1 | 0 | 0 | 90.015 | 97.012 |
17 | 0 | − 1 | 1 | 0 | 98.812 | 94.9188 |
18 | 1 | 0 | 1 | 0 | 96.47 | 95.8146 |
19 | 0 | − 1 | − 1 | 0 | 96.312 | 94.8188 |
20 | − 1 | 0 | 0 | 1 | 90.062 | 97.512 |
21 | − 1 | − 1 | 0 | 0 | 92.32 | 94.1523 |
22 | 1 | − 1 | 0 | 0 | 97.84 | 96.0521 |
23 | 1 | 0 | − 1 | 0 | 98.382 | 95.029 |
24 | 0 | 0 | 0 | 0 | 97.3 | 92.0092 |
25 | − 1 | 0 | − 1 | 0 | 89.616 | 96.945 |
26 | 0 | 1 | − 1 | 0 | 97.162 | 92.0402 |
27 | 0 | 0 | 0 | 0 | 97.8 | 98.512 |
28 | 0 | 0 | 1 | 1 | 96.982 | 99.7798 |
29 | 1 | 1 | 0 | 0 | 97.318 | 90.0855 |
