Table 2. Analysis of variance (ANOVA) for response surface model.
Source | Sum of Squares | Df | Mean Square | F-Value | p-value (Prob > F) | |
Model | 5537.76 | 14 | 395.55 | 550.96 | <0.0001 | significant |
A-Cysteamine | 228.81 | 1 | 228.81 | 318.7 | <0.0001 | |
B-Glutaraldehyde | 512.21 | 1 | 512.21 | 713.45 | <0.0001 | |
C- Functionalized graphene | 0.02 | 1 | 0.02 | 0.03 | 0.8672 | |
D-Enzyme | 1346.2 | 1 | 1346.2 | 1875.09 | <0.0001 | |
AB | 210.25 | 1 | 210.25 | 292.85 | <0.0001 | |
AC | 108.16 | 1 | 108.16 | 150.65 | <0.0001 | |
AD | 20.25 | 1 | 20.25 | 28.2 | 0.0001 | |
BC | 16 | 1 | 16 | 22.29 | 0.0003 | |
BD | 26.01 | 1 | 26.01 | 36.23 | <0.0001 | |
CD | 764.52 | 1 | 764.52 | 1064.89 | <0.0001 | |
A2 | 834.5 | 1 | 834.5 | 1162.36 | <0.0001 | |
B2 | 1791.19 | 1 | 1791.19 | 2494.9 | <0.0001 | |
C2 | 343.77 | 1 | 343.77 | 478.83 | <0.0001 | |
D2 | 218.58 | 1 | 218.58 | 304.46 | <0.0001 | |
Residual | 10.05 | 14 | 0.72 | |||
Lack of Fit | 8.86 | 10 | 0.89 | 2.97 | 0.1526 | not significant |
Pure Error | 1.19 | 4 | 0.3 | |||
Cor Total | 5547.81 | 28 |
R-Squared = 0.998188; Adj R-Squared = 0.996377; Pred R-Squared = 0.990466.