A Stochastic Model for Adsorption Kinetics

Table 4

Kinetic parameters and coefficients of determination for the PFO, PSO, and PNO models of fluoride adsorption by Xant-Al for initial fluoride concentrations of 1, 2, 3, 4, and 5 mg/L.

(mg/L)	model		(mg/g)	((mg/g)^1–n/min)
1	PFO	1	0.3837	0.8082	0.9734
	PSO	2	0.3946	4.7417	0.9908
	PNO	3.7317	0.423	94.3324	0.9938
2	PFO	1	0.8225	0.764	0.9678
	PSO	2	0.8461	2.0937	0.983
	PNO	2.7063	0.8696	4.3741	0.9841
3	PFO	1	1.2313	0.5094	0.9464
	PSO	2	1.2785	0.8019	0.9652
	PNO	2.111	1.2857	0.8386	0.9653
4	PFO	1	1.5591	0.871	0.8687
	PSO	2	1.5951	1.4379	0.8775
	PNO	2.2156	1.6053	1.6465	0.8776
5	PFO	1	1.9111	32.4142	0.9897
	PSO	2	1.9111	81847.546	0.9897
	PNO	1.0359	1.911	313.5464	0.9897