Table 3 ANOVA of Cd2+ ions removal Bu CuS nanorods.
Source | Sum of squares | Degrees of freedom | Mean square | F-value | p-value |
|---|---|---|---|---|---|
Model | 12589.19 | 9 | 1398.80 | 740.13 | < 0.0001 |
A-pH | 58.32 | 1 | 58.32 | 30.86 | 0.0009 |
B-Contact time | 1439.16 | 1 | 1439.16 | 761.49 | < 0.0001 |
C-Initial concentration | 3053.71 | 1 | 3053.71 | 1615.78 | < 0.0001 |
AB | 180.90 | 1 | 180.90 | 95.72 | < 0.0001 |
AC | 0.1225 | 1 | 0.1225 | 0.0648 | 0.8064 |
BC | 7.29 | 1 | 7.29 | 3.86 | 0.0903 |
A² | 5903.70 | 1 | 5903.70 | 3123.77 | < 0.0001 |
B² | 956.23 | 1 | 956.23 | 505.96 | < 0.0001 |
C² | 431.22 | 1 | 431.22 | 228.17 | < 0.0001 |
Residual | 13.23 | 7 | 1.89 | ||
Lack of fit | 13.08 | 3 | 4.36 | 4.71 | 0.1302 |
Pure error | 0.1520 | 4 | 0.0380 | ||
Cor total | 12602.42 | 16 | |||
R2 | Adjusted R2 | Predicted R2 | Adequate precision | Std deviation | |
0.999 | 0.997 | 0.983 | 72.42 | 1.37 |
