Research Article
Optimization of the Production Parameters of Composites from Sugarcane Bagasse and Iron Salts for Use in Dye Adsorption
Table 2
Box-Behnken design (BBD) matrix with real and coded values of three factors studied, and response (qe) of each test performed.
| Run | Independent Variables | Dependent Variable | x1 Mass sugarcane bagasse/mass iron salt (g) | x2 Type of mixture sugarcane bagasse/iron salt | x3 Temperature (°C) | Response (y) qe (mg g−1) |
| 1 | 1:2 (-1) | SB/IN (-1) | 500 (0) | 3.32 |
| 2 | 2:1 (1) | SB/IN (-1) | 500 (0) | 0.51 |
| 3 | 1:2 (-1) | SB/IA (1) | 500 (0) | 0.89 |
| 4 | 2:1 (1) | SB/IA (1) | 500 (0) | 0.44 |
| 5 | 1:2 (-1) | SB/IN-IA (0) | 400 (-1) | 5.39 |
| 6 | 2:1 (1) | SB/IN-IA (0) | 400 (-1) | 2.60 |
| 7 | 1:2 (-1) | SB/IN-IA (0) | 600 (1) | 0.00 |
| 8 | 2:1 (1) | SB/IN-IA (0) | 600 (1) | 0.00 |
| 9 | 1:1 (0) | SB/IN (-1) | 400 (-1) | 0.86 |
| 10 | 1:1 (0) | SB/IA (1) | 400 (-1) | 0.55 |
| 11 | 1:1 (0) | SB/IN (-1) | 600 (1) | 5.84 |
| 12 | 1:1 (0) | SB/IA (1) | 600 (1) | 0.00 |
| 13 (CP) | 1:1 (0) | SB/IN-IA (0) | 500 (0) | 3.87 |
| 14 (CP) | 1:1 (0) | SB/IN-IA (0) | 500 (0) | 3.10 |
| 15 (CP) | 1:1 (0) | SB/IN-IA (0) | 500 (0) | 4.30 |
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