Table 9.
Correlation parameter of regression, kinetics constant and adsorption capacity (theorical and experimental) obtained by the Thomas fitting of experimental data for atrazine at the different conditions tested
| Initial concentration (µg L−1) |
Bed depth (cm) |
Flow rate (mL min−1) |
GTPEG% | Leaching test | K (L min−1 µg−1) | q (µg g−1) | qexp (µg g−1) | R2 |
|---|---|---|---|---|---|---|---|---|
| Atrazine | ||||||||
| 500 | 5 | 1 | 5 | No | 3.8·10–5 | 66 | 127 | 0.92 |
| 500 | 5 | 0.2 | 5 | No | 4.8·10–6 | 363 | 186 | 0.63 |
| 500 | 5 | 2.7 | 5 | No | 1.6·10–4 | 190 | 106 | 0.51 |
| 500 | 10 | 1 | 5 | No | 2.3·10–5 | 171 | 65 | 0.60 |
| 500 | 20 | 1 | 5 | No | 2.0·10–5 | 75 | 43 | 0.61 |
| 500 | 10 | 1 | 2.5 | No | 2.4·10–5 | 1146 | 25 | 0.34 |
| 500 | 10 | 1 | 5 | Yes | 4.2·10–5 | 23 | 73 | 0.80 |
| 250 | 10 | 1 | 5 | No | 7.7·10–5 | 13 | 74 | 0.67 |
| 125 | 10 | 1 | 5 | No | / | / | 28 | 0.2 |