Table 4 Comparison of maximum adsorption capacity for IC dye on some adsorbents
| Adsorbent | Maximum adsorption capacity (mg g−1) | Reference |
|---|---|---|
| Carbonaceous material (tea waste) | 20 | This work |
| Dried cola nut shell activated with KOH | 13 | [48] |
| Brazil nut shells | 1.1 | [34] |
| Acacia nilotica (babool) sawdust activated carbon | 4.8 | [49] |
| Cellulosic waste of citrus reticulate peels by formaldehyde | 15 | [50] |
| Carbonaceous material from pyrolysis of sewage sludge | 93 | [51] |
| Commercial activated carbon | 79 | [52] |