Table 4.
Fitting parameters for the fitting of pseudo-first order (up) and pseudo-second order (down) kinetic equations for the sorption of cymoxanil, at 25 °C and 200 and 500 ppm.
| Ci = 200 ppm | PCD | PCD/AC5% | PCD/AC10% | AC |
| qe,exp (mg g−1) | 10 (±2) | 18.7 (±0.1) | 35.2 (±0.1) | |
| qe (mg g−1) | n/a | 10.2 (±0.3) | 18.8 (±0.4) | 35.6 (±0.2) |
| k1 (10−2 min−1) | n/a | 12 (±1) | 22 (±2) | 21.5 (±0.5) |
| R2 | n/a | 0.9938 | 0.9858 | 0.9990 |
| AIC | n/a | −32.9 | −1.9 | −21.4 |
| qe (mg g−1) | n/a | 14.2 (±0.7) | 22.7 (±0.7) | 43.6 (±0.6) |
| k2 (10−2 g mg−1 min−1) | n/a | 0.6 (±0.1) | 0.9 (±0.1) | 0.44 (±0.02) |
| R2 | n/a | 0.9930 | 0.9883 | 0.9980 |
| AIC | n/a | −29.0 | −3.0 | −9.1 |
| Ci = 500 ppm | PCD | PCD/AC5% | PCD/AC10% | AC |
| qe,exp (mg g−1) | 11 (±4) | 18 (±4) | 27 (±4) | 259 (±1) |
| qe (mg g−1) | 10.4 (±0.8) | 19.2 (±0.8) | 25.4 (±0.7) | 253 (±6) |
| k1 (10−2 min−1) | 5 (±1) | 3.8 (±0.5) | 17 (±3) | 11 (±2) |
| R2 | 0.9171 | 0.9651 | 0.9478 | 0.9608 |
| AIC | 7.6 | 14.8 | 40.1 | 145.5 |
| qe (mg g−1) | 11 (±1) | 23 (±1) | 28.1 (±0.6) | 277 (±1) |
| k2 (10−2 g mg−1 min−1) | 0.7 (±0.3) | 0.18 (±0.04) | 0.65 (±0.09) | 0.081(±0.002) |
| R2 | 0.9384 | 0.9714 | 0.9794 | 0.9992 |
| AIC | 5.8 | 13.0 | 22.6 | 54.0 |