Table 3 Thermodynamic parameters of Cu2+, Pb2+and Ni2+ adsorption on activated bentonite Clay.
T (K) | Metal ion | ΔH° (KJ/mol) | ΔS° (KJ/K.mol) | ΔG° (KJ/mol) |
|---|---|---|---|---|
293 | Cu2+ | 10.129045 | 0.041487 | − 2.06054 |
303 | − 2.37783 | |||
313 | − 2.8589 | |||
323 | − 3.31776 | |||
333 | − 3.66674 | |||
293 | Pb2+ | 10.58183 | 0.041222 | − 1.51173 |
303 | − 1.89886 | |||
313 | − 2.33187 | |||
323 | − 2.6673 | |||
333 | − 3.19418 | |||
293 | Ni2+ | 6.826873 | 0.027001 | − 1.08326 |
303 | − 1.34117 | |||
313 | − 1.64551 | |||
323 | − 1.90137 | |||
333 | − 2.15125 |
