Removal of Methylene Blue from Aqueous Solution Using Agricultural Residue Walnut Shell: Equilibrium, Kinetic, and Thermodynamic Studies

Table 6

Comparison of MB adsorption capacity with some environmental-friendly adsorbents.

Adsorbent	Dye name	Adsorption capacity (mg/g)	Reference
Orange peel	MB	18.6	[25]
Peanut hull	MB	68.03	[26]
Rice husk	MB	40.59	[27]
Cherry Sawdust	MB	39.84	[28]
Wheat shells	MB	16.56	[29]
Walnut shell (WS)	MB	51.55	This work