Isotherm models | Parameters | Normal value | Temperature (˚C) | |||
20 | 30 | 40 | 50 | |||
Langmuir | qmax,cal (mg∙g−1) | - | 0.32 | 6.47 | 0.52 | 0.27 |
KL (L∙mg−1) | - | 0.0199 | 0.0017 | 0.0197 | 0.1402 | |
RL | [0 - 1] | 0.49 - 0.9 | 0.91 - 0.99 | 0.49 - 0.9 | 0.11 - 0.56 | |
R2 | ~1 | 0.972 | 0.963 | 0.991 | 0.799 | |
Freundlich | KF (mg∙g−1) | - | 263.27 | 70.76 | 38.51 | 110.98 |
n | - | 0.723 | 0.864 | 0.812 | 1.199 | |
1/n | 1/n < 1 | 1.38 | 1.16 | 1.23 | 0.83 | |
R2 | ~1 | 0.956 | 0.959 | 0.979 | 0.896 | |
Temkin | A | - | 3.756 | 2.805 | 2.853 | 1.376 |
B | - | 0.137 | 0.13 | 0.142 | 0.111 | |
R2 | ~1 | 0.827 | 0.824 | 0.884 | 0.788 |