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| Adsorbent | Adsorption equilibrium time (h) | Adsorption capacity (mg g−1) | Ref. |
|---|---|---|---|
| Cobalt(ii) imprinted chitosan | 72 | 29.52 | 50 |
| Polyvinyl alcohol (PVA)/chitosan | 18 | 14.39 | 51 |
| A novel xanthate-modified magnetic chitosan | 8 | 18.5 | 52 |
| Surface-grafted Co(ii)-imprinted chitosan | 9 | 22 | 53 |
| Whisker surface ion-imprinted chitosan | 3 | 33.75 | 54 |
| DTPA-chitosan | 12 | 49.1 | 55 |
| PCMC beads | 6 | 46.25 | This work |
