Table 2 Analysis of variance for removal of Pb (II) ions by MMT-K10.
Source | Sum of squares | Df | Mean square | F-value | p-value | |
|---|---|---|---|---|---|---|
Model | 734.85 | 14 | 52.49 | 198.10 | < 0.0001 | Significant |
A-pH | 138.92 | 1 | 138.92 | 524.31 | < 0.0001 | * |
B- MMT-K10 | 24.06 | 1 | 24.06 | 90.79 | < 0.0001 | * |
C-Time | 23.77 | 1 | 23.77 | 89.72 | < 0.0001 | * |
D-Pb | 68.69 | 1 | 68.69 | 259.24 | < 0.0001 | * |
AB | 0.0756 | 1 | 0.0756 | 0.2854 | 0.6022 | |
AC | 0.0441 | 1 | 0.0441 | 0.1664 | 0.6899 | |
AD | 0.1600 | 1 | 0.1600 | 0.6039 | 0.4510 | |
BC | 0.1122 | 1 | 0.1122 | 0.4235 | 0.5265 | |
BD | 0.9506 | 1 | 0.9506 | 3.59 | 0.0807 | |
CD | 0.0900 | 1 | 0.0900 | 0.3397 | 0.5700 | |
A2 | 417.67 | 1 | 417.67 | 1576.31 | < 0.0001 | |
B2 | 1.36 | 1 | 1.36 | 5.15 | 0.0410 | |
C2 | 19.24 | 1 | 19.24 | 72.62 | < 0.0001 | |
D2 | 62.53 | 1 | 62.53 | 236.00 | < 0.0001 | |
Residual | 3.44 | 13 | 0.2650 | |||
Lack of fit | 3.08 | 10 | 0.3077 | 2.51 | 0.2426 | Not significant |
Pure error | 0.3675 | 3 | 0.1225 | |||
Cor total | 738.29 | 27 |
