Table 3 Summary of pseudo-first order, pseudo-second order, intra-particle diffusion and Elovich models
Composite | Pseudo-first order | ||
|---|---|---|---|
K1 (min−1) | qe (mg/g) | R2 | |
A1 | 0.012 | 0.34 | 0.4261 |
A2 | 0.020 | 0.59 | 0.3505 |
A3 | 0.027 | 0.83 | 0.9641 |
Composite | Pseudo-second order | ||
|---|---|---|---|
K2 (g mg−1 min−1) | qe (mg/g) | R2 | |
A1 | 0.82 | 5.65 | 0.9998 |
A2 | 0.33 | 5.62 | 0.9988 |
A3 | 0.16 | 9.38 | 1 |
Composite | Intra-particle diffusion | ||
|---|---|---|---|
Ki | C (mg/g) | R2 | |
A1 | 0.04 | 5.41 | 0.5875 |
A2 | 0.09 | 5.03 | 0.5749 |
A3 | 0.12 | 8.49 | 0.9349 |
Composite | Elovich | ||
|---|---|---|---|
α (mg/g min) | β (g/mg) | R2 | |
A1 | 9.2*1024 | 11.29 | 0.6659 |
A2 | 1.4*105 | 4.71 | 0.6406 |
A3 | 1.6*1012 | 3.59 | 0.9619 |