3.6 Isotherm Outcome
65
Table 3.1
Langmuir, Freundlich, Temkin and DKR isotherm criteria for binding ions on GXXB at 45 °C
Ions
Langmuir parameters
Freundlich parameters
Temkin parameters
DKR parameters
Q
m (mmol/g) K
Lc (L/mmol) R 2
n
K
f (mmol/g) R 2
A
(L/mmol) B
(J/mol) R 2
X
m (mmol/g) E
(kJ/mol) R 2
Cu(II) 4.430
3.981
0.990 3.581 1.703
0.78 3.412
6.124
0.992 4.183
13.512
0.992
Pb(II)
4.220
3.462
0.990 3.410 1.792
0.82 2.972
8.342
0.981 4.123
13.113
0.991
Ni(II)
3.872
3.113
0.980 3.112 1.973
0.79 2.434
7.763
0.994 3.562
11.962
0.984
Cd(II) 3.800
2.932
0.993 2.681 1.464
0.86 1.873
5.454
0.983 3.252
10.244
0.983
Cr(VI) 2.932
2.631
0.992 2.602 1.622
0.85 1.491
8.542
0.992 3.124
9.152
0.982
Zn(II) 1.761
1.983
0.991 1.493 1.901
0.83 1.143
7.132
0.992 2.323
9.651
0.993