Comparative and Equilibrium Studies on Anionic and Cationic Dyes Removal by Nano-Alumina-Doped Catechol Formaldehyde Composite

Table 4

Adsorption capacities of various adsorbents onto SF and CR dyes.

Adsorbents	Adsorption capacity (mg/g)	Reference
CR dye
Eichhornia crassipes	1.58	[45]
Activated carbon from coir pith	6.72	[13]
Activated carbon (laboratory grade)	1.88	[51]
Cashew nutshell	5.18	[54]
Kaolin (clay materials)	5.44	[55]
Zeolite	3.03	[55]
Nabentonite	7.29	[55]
APC	8.928	Present study
SF dye
Activated carbon derived from coconut shell	0.9980	[56]
Activated carbon derived from pineapple peel	1.0020	[56]
Activated carbon	3.183	[9]
Activated rice husk	0.2117	[9]
Bambusa tulda	32.26	[57]
Tea waste	29.49	[43]
NaOH-treated rice husk	37.97	[58]
Fe-GAC	26.55	[59]
APC	6.534	Present study