Isotherm model

Temperature (K)

Langmuir

283

298

313

K_L (L∙g⁻¹)

61.4 ± 0.1

78.4 ± 0.2

98.8 ± 0.2

(g∙g⁻¹)

(1.29 ± 0.02) × 10⁻²

(1.49 ± 0.01) × 10⁻²

(1.89 ± 0.01) × 10⁻²

r²

0.9929

0.9902

0.9951

RMD (%)

11

12

11

Freundlich

K_F (g∙g⁻¹)

30.6 ± 0.2

136.5 ± 0.1

22.1 ± 0.2

n

0.73 ± 0.01

0.52 ± 0.03

0.50 ± 0.01

r²

0.9959

0.9927

0.9963

RMD (%)

3.7

4.5

4.9

Dubinin-Radushkevich

K_DR (mol∙g⁻¹)

23.9 ± 0.1

18.2 ± 0.2

27.5 ± 0.1

B (mol²∙J⁻²)

(2.63 ± 0.01) × 10⁻⁸

(1.28 ± 0.02) × 10⁻⁸

(2.22 ± 0.02) × 10⁻⁸

E (kJ∙mol⁻¹)

4.36

6.26

4.75

r²

0.9915

0.9918

0.9997

RMD (%)

6.9

7.1

4.6