Table 5.
Summarized kinetic constants for the adsorption of different dyes on the surface of unmodified and cationized films.
| C0 (mg/L) | Pseudo-first-order | Pseudo-second-order | Elovich | Diffusion | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| K1 | qe | R2 | SSE | K2 | qe | R2 | SSE | α | β | R2 | K1 | R2 | |
| MB | |||||||||||||
| 10 | 0.0089 | 2.135 | 0.66 | 0.461 | 0.093 | 5.76 | 0.99 | 0.009 | 6.654 | 0.657 | 0.623 | 0.4059 | 0.511 |
| 20 | 0.01 | 1.891 | 0.55 | 0.87 | 0.003 | 8.888 | 0.99 | 0.002 | 28.58 | 0.754 | 0.529 | 0. 586 | 0.412 |
| 30 | 0.0098 | 1.829 | 0.48 | 1.1 | 0.153 | 10.66 | 0.99 | 0.002 | 303.6 | 1.119 | 0.475 | 0.6697 | 0.366 |
| RB198 | |||||||||||||
| 10 | 0.007 | 1.824 | 0.9 | 0.006 | 0.054 | 2.014 | 0.97 | 0.017 | 0.468 | 2.493 | 0.975 | 0.1988 | 0.952 |
| 20 | 0.0098 | 2.9 | 0.86 | 0.075 | 0.099 | 3.852 | 0.97 | 0.044 | 0.778 | 1.207 | 0.971 | 0. 4009 | 0.904 |
| 30 | 0.0119 | 4.301 | 0.92 | 0.146 | 0.021 | 5.875 | 0.97 | 0.05 | 1.656 | 0.883 | 0.944 | 0.564 | 0.93 |
| DY50 | |||||||||||||
| 10 | 0.0028 | 1.213 | 0.94 | 0.079 | 0.049 | 0.724 | 0.85 | 0.018 | 0.068 | 7.553 | 0.913 | 0.0657 | 0.98 |
| 20 | 0.0038 | 1.39 | 0.85 | 0.06 | 0.058 | 1.055 | 0.94 | 0.019 | 0.143 | 4.57 | 0.957 | 0.1042 | 0.95 |
| 30 | 0.0038 | 1.376 | 0.71 | 0.012 | 0.14 | 1.32 | 0.99 | 0.0005 | 0.453 | 3.731 | 0.937 | 0.12 | 0.83 |
| NBB | |||||||||||||
| 0% | 0.003 | 0.494 | 0.838 | 0.015 | 0.356 | 0.378 | 0.983 | 0.002 | 0.11 | 13.568 | 0.97 | 0.036 | 0.926 |
| 0.05% | 0.009 | 2.452 | 0.801 | 0.416 | 0.078 | 6.305 | 0.999 | 0.011 | 5.2 | 0.8579 | 0.82 | 0.099 | 0.585 |
| 1% | 0.005 | 0.82 | 0.472 | 0.212 | 0.342 | 2.74 | 0.999 | 0.001 | 9.09 | 2.504 | 0.52 | 0.179 | 0.416 |
| 2% | 0.004 | 0.494 | 0.621 | 0.088 | 0.373 | 1.309 | 0.998 | 0.002 | 1.84 | 4.697 | 0.69 | 0.529 | 0.672 |