Table 2.
Fitting results of different kinetics for MO Adsorption by RHB and CSBC.
| Adsorbent | qe,exp (mg.g−1) | Kinetic Model | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Pseudo-First-Order | Pseudo-Second-Order | ||||||||
| qe,cal
(mg.g−1) |
k1
(1.min−1) |
R2 | qe,cal
(mg.g−1) |
k2
(g.mg−1.min−1) |
R2 | ||||
| CSBC | 12.20 | 11.72 | 0.13 | 0.864 | 12.02 | 0.02 | 0.942 | ||
| RHB | 12.16 | 11.16 | 0.10 | 0.832 | 11.81 | 0.01 | 0.930 | ||
| Intra-particle diffusion | |||||||||
| Stage I: t = 1–10 min | Stage II: t = 20–60 min | Stage III: t > 60 min | |||||||
| C1 | kid1 | R2 | C2 | kid2 | R2 | C3 | kid3 | R2 | |
| mg.g−1 | mg.g−1.min−1/2 | mg.g−1 | mg.g−1.min−1/2 | mg.g−1 | mg.g−1.min−1/2 | ||||
| CSBC | 1.47 | 3.94 | 0.927 | 10.95 | 0.54 | 0.926 | 14.94 | 0.08 | 0.858 |
| RHB | 1.92 | 1.58 | 0.970 | 6.59 | 0.46 | 0.974 | 9.63 | 0.14 | 0.891 |