No | Kinetics model | Parameters | Value |
1 | First-order rate equation –ln(Ct/Co) = K1t | K1 (min−1) | 0.0116 |
R2 | 0.915 | ||
2 | Second order rate equation [1/Ct] – [1/Co] = K2t | K2 (L/mg∙min) | 0.013 |
R2 | 0.948 | ||
3 | Lagergren pseudo first-order equation. Ln (qe – qt) = lnqe – K1t | K1 (min−1) | −0.018 |
R2 | 0.936 | ||
4 | Pseudo second-order rate equation
| K2 (g/mg∙min) | 0.036 |
qe | 1.677 | ||
R2 | 0.995 | ||
5 | Intraparticle diffusion qt = Kpt1/2 + c | c (mg/g) | 0.196 |
R2 | 0.946 | ||
Kp (mg/g∙min1/2) | 0.143 | ||
6 | Elovich equation model qt = [1/β]ln[αβ] + [1/β]lnt | R2 | 0.977 |
α | 0.214 | ||
b (g/mg) | 2.691 | ||
7 | Natarajan and Khalaf Ln(Co/Ct) = Kt | K (min−1) | 0.0116 |
R2 | 0.915 |