Adsorption Isotherm Models and Parameters

Watermelon Rinds

Neem-Tree Leaves

Langmuir

q_m (mg/g)

24.75

24.81

K_L

−0.4081

−0.4306

R_L

−0.0082

−0.0078

R²

0.9998

0.9998

Freundlich

10.13

3.78

K_F

37.7204

37.3488

R²

0.9935

0.9919

Temkin

b_T (kJ/mol)

−0.9212

0.7374

B_T

−2.6896

−2.6164

A_T

R²

0.9947

0.9932

Dubinin-Redushkevich

B_D (mol²/J²)

E (kJ/mol)

0.2887

0.3162

q_D (mg/g)

25.94

26.06

R²

0.9574

0.9359

Harkins-Jura

A_HJ

−1667

−1667

B_HJ

−0.8333

−0.8333

R²

0.9908

0.9889