Table 7.
Adsorption kinetics parameters for the removal of MCPA.
| pseudo-first order | mg l−1 | qe,exp (mg g−1) | qe,cal (mg g−1) | K1 (min)−1 | R2 | R2adj | RMSE | AIC |
|---|---|---|---|---|---|---|---|---|
| 5 | 24.388 | 9.653 | 0.150 | 0.783 | 0.711 | 0.795 | −0.851 | |
| 10 | 48.379 | 23.203 | 0.170 | 0.735 | 0.647 | 0.802 | −0.767 | |
| 20 | 95.243 | 66.980 | 0.225 | 0.919 | 0.892 | 0.558 | −4.396 | |
| 30 | 142.568 | 84.208 | 0.224 | 0.821 | 0.761 | 0.749 | −1.499 | |
| 40 | 188.576 | 169.236 | 0.238 | 0.883 | 0.844 | 0.529 | −4.917 | |
| 50 | 233.576 | 170.187 | 0.253 | 0.833 | 0.824 | 0.644 | −2.959 |
| pseudo-second-order MCPA | qe,exp (mg g−1) | qe cal (g mg−1) | K2 (g mg−1 min−1) | R2 | R2adj | RMSE | AIC | |
|---|---|---|---|---|---|---|---|---|
| 5 | 24.388 | 24.390 | 0.135 | 0.996 | 0.995 | 0.053 | −71.372 | |
| 10 | 48.379 | 48.309 | 0.059 | 0.995 | 0.994 | 0.026 | −81.626 | |
| 20 | 95.243 | 96.153 | 0.019 | 0.998 | 0.996 | 0.005 | −108.511 | |
| 30 | 142.568 | 142.857 | 0.020 | 0.996 | 0.995 | 0.009 | −119.225 | |
| 40 | 188.576 | 188.679 | 0.010 | 0.994 | 0.993 | 0.007 | −126.536 | |
| 50 | 233.576 | 232.558 | 0.010 | 0994 | 0.993 | 0.006 | −131.463 |
| intraparticle diffusion MCPA |
Kp (mg−1 g−1 min1/2) C |
R2 | R2adj | RMSE | AIC | |||
|---|---|---|---|---|---|---|---|---|
| 5 | 2.006 | 8.658 | 0.573 | 0.431 | 7.904 | 22.120 | ||
| 10 | 3.956 | 17.01 | 0.575 | 0.433 | 15.536 | 28.877 | ||
| 20 | 8.110 | 30.922 | 0.632 | 0.509 | 28.263 | 34.861 | ||
| 30 | 11.756 | 50.189 | 0.578 | 0.438 | 45.828 | 39.695 | ||
| 40 | 16.026 | 58.755 | 0.650 | 0.533 | 53.666 | 41.274 | ||
| 50 | 19.538 | 79.755 | 0.600 | 0.466 | 72.833 | 44.328 | ||