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Table 5

Isotherm model parameters

Isotherm model30°C
40°C
50°C
Correlation coefficientIsotherm constantsCorrelation coefficientIsotherm constantsCorrelation coefficientIsotherm constants
Langmuir isotherm 0.93185 qmax (mg/g)
49.30966
b (L/mg)
0.01416 
0.96919 qmax (mg/g)
46.08295
b (L/mg)
0.01922 
0.98026 qmax (mg/g)
39.10833
b (L/mg)
0.03193 
Freundlich isotherm 0.99955 Kf 1.18749
n 1.37538 
0.99884 Kf 1.50244
n 1.43211 
0.99734 Kf 2.18625
n 1.60046 
Temkin isotherm 0.93669 B1 (J/mol)
8.66953
KT (L/g)
0.20108 
0.95250 B1 (J/mol)
8.67652
KT (L/g)
0.24775 
0.96457 B1 (J/mol)
8.08288
KT (L/g)
0.35779 
Dubinin–Radushkevich isotherm 0.77774 Xm (mg/g)
17.92883
E (kJ/mol)
0.2009 
0.78002 Xm (mg/g)
18.60945
E (kJ/mol)
0.2381 
0.78524 Xm (mg/g)
1.62889
E (kJ/mol)
1.7557 
Isotherm model30°C
40°C
50°C
Correlation coefficientIsotherm constantsCorrelation coefficientIsotherm constantsCorrelation coefficientIsotherm constants
Langmuir isotherm 0.93185 qmax (mg/g)
49.30966
b (L/mg)
0.01416 
0.96919 qmax (mg/g)
46.08295
b (L/mg)
0.01922 
0.98026 qmax (mg/g)
39.10833
b (L/mg)
0.03193 
Freundlich isotherm 0.99955 Kf 1.18749
n 1.37538 
0.99884 Kf 1.50244
n 1.43211 
0.99734 Kf 2.18625
n 1.60046 
Temkin isotherm 0.93669 B1 (J/mol)
8.66953
KT (L/g)
0.20108 
0.95250 B1 (J/mol)
8.67652
KT (L/g)
0.24775 
0.96457 B1 (J/mol)
8.08288
KT (L/g)
0.35779 
Dubinin–Radushkevich isotherm 0.77774 Xm (mg/g)
17.92883
E (kJ/mol)
0.2009 
0.78002 Xm (mg/g)
18.60945
E (kJ/mol)
0.2381 
0.78524 Xm (mg/g)
1.62889
E (kJ/mol)
1.7557 
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