| Clay materials | Langmuir adsorption isotherm | Freundlich adsorption isotherm | ||||
| qmax (mg·g−1) | KL (L·mg−1) | R2 | n | Kf (g·mg−1·min−1) | R2 | |
| Kao Na-MMT F13 F23 | 0.8761 2.6178 7.874 3.1645 | 0.0451 0.089 0.055 0.0865 | 0.945 0.945 0.977 0.998 | 0.7507 0.9354 1.5000 1.0718 | 0.03815 0.2483 0.4691 0.2174 | 0.931 0.938 0.971 0.993 |