Table 2: Thermodynamics parameters for the adsorption of RB onto CEC.

Temperature (°C)ΔG° (kJ mol−1)ΔH° (kJ mol−1)ΔS° (J mol−1 K−1) (mg g−1)

25−1.1914.1951.1612.08
35−1.4712.77
45−2.4714.09
55−2.8414.85