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 5
Thermodynamic parameters of metal ion removal by ACC.
| Metal ion | T (K) | Thermodynamic parameters | ∆G° (kJ mol−1) | ∆H° (kJ mol−1) | ∆S° (kJ K−1·mol−1) |
| Pb | 298 | 12.45 | 22.24 | 33.22 | 308 | 12.01 | 318 | 11.79 |
| Co | 298 | 15.81 | 21.08 | 17.76 | 308 | 15.56 | 318 | 15.46 |
| Cd | 298 | 17.68 | 34.26 | 56.12 | 308 | 16.66 | 318 | 16.57 |
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