Table 4. Thermodynamic Parameters for Pb(II) and Cd(II) Adsorption on CFSG.

	T (°K)	ΔG° (kJ/mol)	ΔH° (kJ/mol)	ΔS° (kJ/mol·K)
Pb(II)	298	–36.08	–18.22	60.3
	308	–37.10
	318	–37.27
Cd(II)	298	–31.57	18.17	166.7
	308	–33.12
	318	–34.91