Adsorption of Pb(II) from Water onto ZnO, TiO₂, and Al₂O₃: Process Study, Adsorption Behaviour, and Thermodynamics

Table 3

Comparison of the adsorption capacities of Pb(II) using various adsorbents.

Material	Adsorption capacity () mg/g	Reference
PDA@rGO/Fe3O4	35.2	[9]
Metal-organic framework MIL-100(Fe)	22.864	[1]
Carbon aerogel	0.75	[43]
Zeolite-CuO NCs	45.0
Zeolite-Fe3O4 NCs	50.0
Nanocomposite of carbon nanotubes/silica	13.0
Carbon derived from waste rubber	26.0
ZnO-talc	48.30
Manganese oxide-coated CNTs	78.74
TIV	63.29	[44]
Chitosan/magnetite nanocomposite beads	63.3
4-Aminoantipyrine immobilized bentonite	55.5
Chitosan crosslinked with epichlorohydrin	34.1
Pine cone activated carbon	27.53
Barley straw	23.20
ZnO	55.04	This research
TiO2	58.88
Al2O3	53.64