Table 12 Variance analysis results of regression equation of diesel oil adsorption capacity.
From: Oil removal from wastewater with biomass-derived hydrochars laboratory insights
Source of variance | Square sum | Degrees of freedom | Mean square | F value | P value | Significance |
|---|---|---|---|---|---|---|
Model | 7188.85 | 9 | 798.76 | 91.90 | < 0.0001 | ** |
A | 1918.28 | 1 | 1918.28 | 220.70 | < 0.0001 | ** |
B | 1456.65 | 1 | 1456.65 | 167.59 | < 0.0001 | ** |
C | 379.36 | 1 | 379.36 | 43.65 | 0.0003 | ** |
AB | 376.94 | 1 | 376.94 | 43.37 | 0.0003 | ** |
AC | 1.45 | 1 | 1.45 | 0.17 | 0.6950 | |
BC | 0.022 | 1 | 0.022 | 2.589 | 0.9608 | |
A2 | 815.51 | 1 | 815.51 | 93.83 | < 0.0001 | ** |
B2 | 981.07 | 1 | 981.07 | 112.87 | < 0.0001 | ** |
C2 | 938.48 | 1 | 938.48 | 107.97 | < 0.0001 | ** |
Residual error | 60.84 | 7 | 8.69 | |||
Lack of fit | 47.07 | 3 | 15.69 | 4.56 | 0.0885 | |
Error | 13.77 | 4 | 3.44 | |||
Sum | 7249.70 | 16 |
