Adsorptive Applications of Montmorillonite Clay for the Removal of Ag(I) and Cu(II) from Aqueous Medium

Table 3

Comparison of adsorption capacity of Saudi clay with other adsorbents reported in previous works.

Adsorbent	Maximum adsorbed amount (mg/g)		References
	Ag^+	Cu^++
Zeolite	33.2	—	[12]
Activated carbon	—	25	[46]
Peat	10.8	6.2	[10]
Spent activated carbon	—	13	[33]
Red mud	—	5.3	[34]
Expanded perlite	0	8.62	[45]
Natural zeolite	—	8.69	[31]
Clay	—	12.84	[11]
Shells of wheat	—	17.42	[8]
Bulgarian clay	—	3.11	[25]
Expanded perlite	0.8	0.18	[4]
Saudi clay	63.2	32.36	This work