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Kinetics parameters for adsorption of AB40 on Fe3O4, PANI and PANI/Fe3O4 composite based on pseudo-first-order and pseudo-second-order equations.
| Pseudo 1st Order | Pseudo 2nd Order | |||||
|---|---|---|---|---|---|---|
| Adsorbents | K1 (min−1) | qe (mg g−1) | R2 | K2 (g mg−1 min−1) | qe (mg g−1) | R2 |
| Fe3O4 | -0.015 | 1.765 | 0.812 | 0.0665 | 126.3 | 0.999 |
| PANI | -0.033 | 4.823 | 0.885 | 0.0028 | 258.8 | 0.983 |
| PANI/ Fe3O4 | -0.047 | 2.495 | 0.881 | 0.0213 | 207.3 | 0.994 |
