| Freundlich Isotherm | r | 0.98 | 0.99 | 0.98 | 0.99 | 0.99 | 0.99 |
| nf | 0.84 | 0.85 | 0.85 | 0.57 | 0.58 | 0.59 | |
| Kf (mg/g) | 4.21 | 5.25 | 5.43 | 0.31 | 0.79 | 1.2 | |
| Langmuir Isotherm | r | 0.99 | 0.99 | 0.99 | 0.99 | 0.98 | 0.99 |
| RL | 0.025 - 0.91 | 0.024 - 0.90 | 0.024 - 0.90 | 0.125 - 0.98 | 0.085 - 0.97 | 0.070 - 0.97 | |
| KL (L/mg) | 20.45 | 0.2017 | 0.2029 | 0.035 | 0.054 | 0.066 | |
| b (mg/g) | 12.04 | 14.32 | 15.37 | 16.05 | 18.93 | 20.45 | |
|
| Temp. (K) | 293 | 298 | 303 | 293 | 298 | 303 |
| Metals | Cr(III) | Cr(VI) | |||||