Evaluation of Agrowaste Species for Removal of Heavy Metals from Synthetic Wastewater

Table 6

Adsorption efficiencies of some selected adsorbents.

Adsorbents	Adsorbents	Q max	Reference
Untreated rice husk	Direct dyes	2.4	[47]
Activated rice husk	Direct dyes	4.3	[47]
Red-mud	Ni^+2	0.0018	[48]
Peanut hulls	Fe^+3 and Cu^+2	79.28 and 96.58 mg/g for Fe^+3 and Cu^+	[49]
Zeolite derived from fly ash	Cu^+2	14.7	[50]
Ag nanoparticle-loaded activated carbon (Ag-NP-AC)	Cu^+2	60	[51]
Iron oxide-coated eggshell powder	Cu^+2	6.7	[52]
Chitosan	Cu^+2	62.4	[53]