Using Modified Fly Ash for Removal of Heavy Metal Ions from Aqueous Solution

Table 7

Comparison of maximum adsorption capacity (Q_max) of different adsorbents for Hg²⁺ and Cd²⁺ ions.

Adsorbent	Maximum adsorption capacity—Qmax (mg·g^−1)		Ref.
	Hg^2+ ions	Cd^2+ ions
Activated carbon from Xanthoceras sorbifolia Bunge hull	235.6	388.7	[26]
Clay mineral montmorillonite	0.86	—	[27]
Graphenes magnetic material	23.03	27.83	[28]
Chitosan	52.63	58.8	[29]
FAMBT	1.91	12.4	This work