Research Article
Removal of Heavy Metal Ions (Pb2+, Co2+, and Cd2+) by Activated Carbon from Cypress Fruit: An Investigation of Kinetics, Thermodynamics, and Isotherms
Table 3
Results of kinetics studies for the Pb2+, Co2+, and Cd2+ adsorption onto ACC.
| Kinetic model | | Linear models | | Related constants |
| PFO | Pb2+ | 0.7597 | = 4.61 × 10−4 (min−1) | Co2+ | 0.3481 | = 1.38 × 10−3 (min−1) | Cd2+ | 0.8222 | = 4.38 × 10−3 (min−1) |
| PSO | Pb2+ | 0.9966 | = 4.65 × 10−3 (g·mg−1·min−1) | Co2+ | 0.9998 | = 6.27 × 10−3 (g·mg−1·min−1) | Cd2+ | 0.9543 | = 1.52 × 10−4 (g·mg−1·min−1) |
| IPD | Pb2+ | 0.8430 | = 0.4687 (mg·g−1·min−0.5) | Co2+ | 0.4622 | = 0.7779 (mg·g−1·min−0.5) | Cd2+ | 0.8873 | = 5.4366 (mg·g−1·min−0.5) |
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