Thermodynamic parameters of Pb(ii) and Cd(ii) adsorption onto BC/FM.

Metal ions	T (K)	ln KLF (kJ mol−1)	ΔG (kJ mol−1)	ΔH (kJ mol−1)	ΔS (J mol−1 K−1)
Pb	298.15	3.901	−9.671	27.993	125.541
	308.15	4.424	−11.334
	318.15	4.191	−11.085
Cd	298.15	3.240	−8.032	16.146	81.003
	308.15	3.470	−8.891
	318.15	3.594	−9.506