A Stochastic Model for Adsorption Kinetics

Table 6

Kinetic parameters and coefficients of determination for the PFO, PSO, and PNO models for the adsorption of Cd(II) by reed leaves for initial Cd(II) concentrations of 1, 2, 4, and 6 mg/L.

(mg/L)	Model		(mg/g)	((mg/g)/min)
1	PFO	1	0.0465	0.036	0.9686
	PSO	2	0.0490	0.9052	0.9814
	PNO	1.8245	0.0485	0.5076	0.9819
2	PFO	1	0.0906	0.0687	0.9371
	PSO	2	0.095	1.1233	0.9846
	PNO	3.1559	0.1015	26.016	0.9981
4	PFO	1	0.183	0.0344	0.9001
	PSO	2	0.1925	0.2721	0.9729
	PNO	3.6419	0.209	6.8439	0.9939
6	PFO	1	0.2318	0.0262	0.7009
	PSO	2	0.255	0.0991	0.819
	PNO	17.0668	0.6597	47.0188	0.9567