Table 9. Thermodynamic Parameters for Cr(VI) Adsorption onto MWCNTs.
T (K) | ΔG (kJ/mol) | ΔH (J/mol) | ΔS [J/(mol/K)] | |
---|---|---|---|---|
MWCNTs-3 | 298 | 10.4051 | –14.5537 | –45.8891 |
313 | 3.0119 | |||
328 | 1.9056 | |||
MWCNTs-OH-3 | 298 | 7.1904 | –10.1306 | –33.3333 |
313 | 3.5115 | |||
328 | 1.2686 | |||
MWCNTs-COOH-3 | 298 | 3.7401 | –3.2641 | –15.3052 |
313 | 2.4284 | |||
328 | 1.9754 |