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Table 4 Comparison of maximum adsorption capacity for IC dye on some adsorbents

From: Activated carbonaceous materials from tea waste and its removal capacity of indigo carmine present in solution: synthesis, batch and optimization study

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]