[Retracted] Polypyrrole/Magnetic/Tea Waste Composites for PO₄³⁻ Ions Removal: Adsorption-Desorption, Kinetics, and Thermodynamics Studies

Table 4

Adsorption efficiency comparison of composites for different inorganic ions.

S. no	Adsorbent	Adsorbate	Removal efficiency	References
1	Graphene oxide and Fe3O4 composite	NO₃^¯ and PO4^3¯ ions	89 and 93 (%)	[5]
2	Zeolite/geopolymer composite	PO4^3− and NH4^+ ions	206 and 140 (mg/g)	[41]
3	Mango stone biocomposite	PO4^3− ions	95 mg/g	[3]
4	g-C3N4 and acid-activated montmorillonite composite	PO4^3− and Pb(II) ions	5.06 and 182.7 (mg/g)	[42]