Adsorption isotherm parameters for the adsorption of Pb(ii) and Cd(ii) onto BC/FM in a single system.

Metal ions	T (°C)	Langmuir			Freundlich			Langmuir–Freundlich
		Q m (mg g−1)	K 1 (L mg−1)	R 2	n	K 2 (mg1−n g−1 L−n)	R 2	K LF	a LF	n LF	R 2
Pb	25	107.473	0.872	0.785	0.214	44.668	0.891	49.47	2.264	0.260	0.892
	35	111.423	2.077	0.888	0.191	55.822	0.944	83.42	0.144	0.373	0.963
	45	121.290	3.203	0.810	0.183	60.764	0.975	66.07	1.383	0.226	0.976
Cd	25	99.676	0.099	0.941	0.249	28.236	0.942	25.54	0.030	0.487	0.967
	35	113.140	0.191	0.969	0.229	38.101	0.912	32.15	0.15	0.731	0.980
	45	128.532	0.215	0.963	0.245	41.632	0.902	36.37	0.16	0.748	0.972