. 2018 Jul 10;8(43):24588–24598. doi: 10.1039/c8ra02463d

Isotherm parameters obtained using non-linear method for the adsorption of IC onto APAN/Fe₃O₄–MPA.

Langmuir model

Maximum adsorption capacity, q_m (mg g⁻¹) = 152.35

Langmuir equilibrium constant, K_L (L mg⁻¹) = 1.83

Adjusted determination coefficient, R_adj² = 0.9820

Standard deviation, SD (mg g⁻¹) = 3.89

Freundlich model

Freundlich constant, K_F (mg g⁻¹) (L mg⁻¹)^1/n = 82.4

Heterogeneity factor, 1/n = 0.19

Adjusted determination coefficient, R_adj² = 0.9333

Standard deviation, SD (mg g⁻¹) = 9.82

Toth model

Maximum adsorption capacity, q_mT (mg g⁻¹) = 146.2

Toth model constant, α_T (L mg⁻¹) = 0.82

Model exponent, t = 0.93

Adjusted determination coefficient, R_adj² = 0.9769

Standard deviation, SD (mg g⁻¹) = 4.31

Isotherm parameters obtained using non-linear method for the adsorption of IC onto APAN/Fe3O4–MPA.