Research Article
Comparison of Acid Red 114 Dye Adsorption by Fe3O4 and Fe3O4 Impregnated Rice Husk Ash
Table 6
Kinetic parameters for the adsorption of AR114 on MNP and RHA-MNP (
, 100 mg/L,
g/L, and natural pH).
| MNP | Pseudo-first-order model | (mg/L) | (mg/g) | (mg/g) | (min−1) | |
| 60 | 56.06 | 6.75 | 0.0513 | 0.9178 | 100 | 91.81 | 17.48 | 0.0842 | 0.6626 |
| Pseudo-second-order model | (mg/L) | (mg/g) | (g/mg min) | (g/mg min) | |
| 60 | 56.82 | 78.74 | 0.024 | 0.9999 | 100 | 92.59 | 119.05 | 0.014 | 0.9999 |
| RHA-MNP | Pseudo-first-order model | (mg/L) | (mg/g) | (mg/g) | (min−1) | |
| 60 | 55.39 | 32.58 | 0.035 | 0.9921 | 100 | 85.54 | 53.59 | 0.026 | 0.9934 |
| Pseudo-second-order model | (mg/L) | (mg/g) | (g/mg min) | (g/mg min) | |
| 60 | 57.47 | 8.842 | 0.002 | 0.9982 | 100 | 85.47 | 10.237 | 0.001 | 0.9954 |
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