Table 3.
Coded levels, actual values, percentage of degradation of PAHs and multiple response (MR) obtained in factorial design 22 with triplicate of the central point, for the evaluation of PAHs photo degradation using TiO2.
| Mass of TiO2 (g) | Irradiation time (h) | Photo degradation (%) |
|||||||
|---|---|---|---|---|---|---|---|---|---|
| AcNf | AcN | A N | BaA | IP | DahA | BghiP | MR | ||
| -1 (0.2) | -1 (10) | 94.2 | 92.8 | 57.4 | 41.9 | 46.4 | 51.3 | 47.6 | 5.6 |
| 1 (0.8) | -1 (10) | 84.7 | 82.1 | 62.9 | 59.9 | 60.4 | 65.0 | 63.5 | 6.3 |
| -1 (0.2) | 1 (14) | 95.7 | 94.7 | 70.7 | 55.5 | 58.2 | 61.8 | 61.0 | 6.5 |
| 1 (0.8) | 1 (14) | 87.1 | 83.5 | 58.9 | 51.5 | 52.0 | 55.5 | 54.5 | 5.9 |
| 0 (0.5) | 0 (12) | 93.3 | 91.7 | 72.3 | 63.8 | 65.4 | 68.1 | 65.3 | 6.9 |
| 0 (0.5) | 0 (12) | 88.5 | 85.4 | 54.3 | 45.6 | 45.7 | 49.3 | 48.6 | 5.3 |
| 0 (0.5) | 0 (12) | 92.0 | 89.7 | 67.2 | 58.9 | 58.0 | 61.6 | 60.8 | 6.5 |
Acenaphtilene (AcNf), Acenaphtene (AcN), Anthracene (AN), Benz[a]Anthracene (BaA), Indene[1,2,3cd]Pyrene (IP), Dibenz[ah]Anthracene (DahA), Benz[ghi]Pyrene (BghiP).