Equilibrium, Kinetic, and Thermodynamic Studies on the Adsorption of Cadmium from Aqueous Solution by Modified Biomass Ash

Table 4

Values of the constants and fitting of the adjusted adsorption models.

Adsorbent	Temp (°C)	Langmuir			Freundlich
		(mg/g)	(L/mg)			(mg/g) (mg/L)
Biomass ash	30	20.83	1.37	0.996	6.85	13.53	0.976
	45	21.73	1.44	0.995	6.54	14.25	0.982
	60	22.22	1.67	0.994	6.45	14.57	0.986
Modified biomass ash	30	25.00	2.50	0.970	3.03	15.94	0.960
	45	25.64	3.55	0.974	3.34	16.48	0.953
	60	25.67	6.94	0.976	3.12	18.01	0.967