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Parameters of Freundlich adsorption isotherms.
| Heavy metals | Temperature (°C) | KF (mg g−1) | n | R 2 |
|---|---|---|---|---|
| Pb2+ | 20 | 11.63 | 1.3484 | 0.95 |
| 30 | 11.22 | 1.3452 | 0.94 | |
| 40 | 10.18 | 1.3259 | 0.97 | |
| Cd2+ | 20 | 5.05 | 1.6739 | 0.93 |
| 30 | 4.68 | 1.6464 | 0.94 | |
| 40 | 4.57 | 1.6447 | 0.95 | |
| Ni2+ | 20 | 4.69 | 2.0080 | 0.94 |
| 30 | 4.47 | 2.0076 | 0.93 | |
| 40 | 4.25 | 2.0072 | 0.97 |
