Research Article
Optimization of the Production Parameters of Composites from Sugarcane Bagasse and Iron Salts for Use in Dye Adsorption
Table 4
Analysis of variance (ANOVA) for quadratic polynomial model for MB adsorption.
| | Factors | Sum of the square (SS) | Degree of freedom | Media of the square (MS) | F | p |
| | Mass sugarcane bagasse/mass iron salt (x1) | 4.574 | 1 | 4.574 | 12.378 | 0.072156 |
| | Mass sugarcane bagasse/mass iron salt (x12) | 4.797 | 1 | 4.797 | 12.981 | 0.069141 |
| | Type of mixture sugarcane bagasse/iron salt (x2) | 9.348 | 1 | 9.348 | 25.299 | 0.037328 |
| | Type of mixture sugarcane bagasse/iron salt (x22) | 6.478 | 1 | 6.478 | 17.530 | 0.052585 |
| | Temperature (°C) (x3) | 1.569 | 1 | 1.569 | 4.246 | 0.175493 |
| | Temperature (°C) (x32) | 1.416 | 1 | 1.416 | 3.832 | 0.189397 |
| | Interaction (x1) by (x2) | 1.385 | 1 | 1.385 | 3.749 | 0.192465 |
| | Interaction (x1) by (x3) | 1.953 | 1 | 1.953 | 5.285 | 0.148253 |
| | Interaction (x2) by (x3) | 7.651 | 1 | 7.651 | 20.705 | 0.045059 |
| | Lack of fit | 21.008 | 3 | 7.003 | 18.951 | 0.050539 |
| | Pure error | 0.739 | 2 | 0.370 | | |
| | Total | 59.440 | 14 | | | |
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