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Model kinetic parameters for removal Pb2+ and Cu2+ by CS and CS-g-PA.
| Adsorbent | Metal Ion | 1k2 (g·mg−1·min−1) × 10−4 | qe (mg·g−1) | R2 |
|---|---|---|---|---|
| CS | Cu2+ | 1.7 | 140 | 0.997 |
| Pb2+ | 19.8 | 14.8 | 0.998 | |
| CS-g-PA | Cu2+ | 1.8 | 164 | 0.997 |
| Pb2+ | 2.8 | 98.0 | 0.999 |
1 rate constant of the pseudo-second-order kinetic adsorption.
