Table 2.

Kinetic parameters of Pb(II) ions removal on magnetic hybrid nanocomposite material for the initial concentrations 25, 50, 75 and 100 mg/dm³

Parameters	Pb(II) ions concentration
	25 mg/dm3	50 mg/dm3	75 mg/dm3	100 mg/dm3
PFO
q e,exp	6.23	14.13	14.96	16.06
q 1,cal	0.07	4.91	5.33	5.87
k 1	0.017	0.021	0.019	0.015
t 1/2	0.259	0.003	0.004	0.003
R 2	0.9487	0.8207	0.9786	0.9814
PSO
q 2,cal	6.21	13.36	15.31	16.43
k 2	0.797	0.410	0.121	0.010
h	3.774	1.840	2.683	2.622
t 1/2	0.128	0.111	0.031	0.001
R 2	1.0000	0.9976	0.9994	0.9990
IPD
k i1	0.09	0.34	0.96	1.33
k i3	0.06	0.36	0.47	0.52
k i3	0.004	0.438	0.199	0.272
R i,1 2	0.9791	0.9922	0.9751	0.9999
R i,3 2	0.9508	0.7985	0.9007	0.9406
R i,3 2	1.0000	1.0000	1.0000	1.0000
Elovich
A	43.12	48.84	64.65	92.01
B	0.72	0.61	0.60	0.53
R 2	0.9867	0.9192	0.9798	0.9838