A Stochastic Model for Adsorption Kinetics

Table 2

Kinetic parameters and coefficients of determination of the PFO, PSO, and PNO models for the adsorption of DR80 and DB1 by Pec-Ca for initial dye concentrations of 5, 10, 15, and 20 mg/L.

Model	(mg/L)	DR80				DB1
			(mg/g)	((mg/g)/min)			(mg/g)	((mg/g)/min)
PFO	5	1	2.0595	0.0765	0.9859	1	2.2323	0.1982	0.9816
PSO		2	2.1476	0.0735	0.9709	2	2.2681	0.2724	0.9867
PNO		1.1527	2.0669	0.0765	0.9868	2.1977	2.2791	0.3002	0.9868
PFO	10	1	4.3856	0.0755	0.988	1	4.7149	0.1763	0.9879
PSO		2	4.5888	0.0325	0.9893	2	4.7885	0.1202	0.9858
PNO		1.4318	4.4495	0.0533	0.9953	1.3035	4.7278	0.1490	0.9885
PFO	15	1	6.7332	0.1549	0.9981	1	7.1365	0.135	0.9825
PSO		2	6.8559	0.0683	0.9923	2	7.3142	0.0468	0.9827
PNO		1.1310	6.7407	0.136	0.9983	1.4527	7.1934	0.0809	0.9857
PFO	20	1	9.1636	0.1523	0.9951	1	9.5404	0.178	0.9765
PSO		2	9.3466	0.0466	0.9952	2	9.7267	0.051	0.9857
PNO		1.4260	9.2168	0.0878	0.9982	2.0031	9.7275	0.0509	0.9857