Research Article

Thermodynamic Study of Adsorption of Phenol, 4-Chlorophenol, and 4-Nitrophenol on Activated Carbon Obtained from Eucalyptus Seed

Table 3

Thermodynamic parameters for the adsorption of phenols on ACs.

PhenolsACs 20°C (kJ mol−1) 30°C (kJ mol−1) 40°C (kJ mol−1) (kJ mol−1) (J mol−1)

PhenolCAA150.820.810.797.222.83
CAA300.680.550.171.42−22.26
CAB152.431.511.8121,3117.4
CAB305.763.954.8126.0970.5

4-NPlCAA151.551.951.754.52−10.23
CAA300.811.220.631.35−11.91
CAB152.684.914.0417.82−71.58
CAB305.623.674.1925.96−32.08

4-CPCAA151.831.792.355.74−25.52
CAA301.641.940.960.95−7.22
CAB152.934.234.3718.32−73.11
CAB305.683.533.7930.897.27