Mathematical models parameters Pb(II)
Langmuir isotherm R2
KL× 102
qm(mg/g)
0.820
12.73
18.51
Freundlich isotherm R2
KF
n
0.816
104.2×10-4
1.225
Temkin isotherm R2
B1
KT
0.926
37.97
155.0
D-R isotherm R2
Β ×104
qm (mg/g) ×10-4
E kJ/mol
0.987
5
13.74
31.6×10-2
Jovanoic isotherm R2
KJ (L/mg)
qm(mg/g)
0.912
0.056
4.862
Table 4: Different adsorption isotherm model parameters for the adsorption of Pb(II) on PFSR.