Parameters of the Langmuir, Freundlich and Temkin isotherm models at 35 °C.
| Dye | Langmuir adsorption isotherm | Freundlich adsorption isotherm | Temkin adsorption isotherm | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Q max (mg g−1) | K L (L mg−1) | R L | R 2 | n | K F (L mg−1) | R 2 | K T (L mg−1) | B 1 (J mol−1) | R 2 | |
| MB | 555.55 | 0.22 | 0.0046 | 0.9985 | 3.99 | 174.38 | 0.9516 | 54.97 | 79.89 | 0.9705 |
| RB | 434.78 | 0.17 | 0.0081 | 0.9936 | 3.98 | 148.79 | 0.9866 | 16.68 | 77.64 | 0.9764 |
| O-II | 476.19 | 0.14 | 0.0095 | 0.9928 | 3.35 | 119.06 | 0.9516 | 2.09 | 91.30 | 0.9233 |
| MO | 416.66 | 0.02 | 0.0506 | 0.9899 | 1.54 | 14.49 | 0.9476 | 63.36 | 112.85 | 0.9105 |