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

Table 2

Equilibrium parameters for the adsorption of PO₄³⁻ ions on the native and composite adsorbents.

Models	Parameter	Native TW	PPY/TW	MG/TW
Langmuir model	B	0.297	0.1479	0.137
	RL	0.313	0.403	0.42
	R^2	0.9981	0.9023	0.962
	Qm (cal.) (mg/g)	4.55	6.76	7.29
	Qm (exp.) (mg/g)	4.37	5.25	6.46
Freundlich	N	5.13	1.92	2.40
	Kf	2.98	2.01	3.20
	R^2	0.9112	0.7264	0.7065
Temkin	A	106.70	3.32	7.77
	B	0.6553	1.7072	1.7034
	R^2	0.9178	0.7747	0.7606
Huskin-Jura	A	5.62	1.98	5.57
	B	1.173	0.89	0.861
	R^2	0.7082	0.631	0.4794
Dubinin-Radushkevich	β (mol^2KJ^-2)	8 × 10^-8	6 × 10^-7	3 × 10^-7
	R^2	0.9553	0.9801	0.9764
	Qm (cal.) (mg/g)	4.29	5.82	6.91
	qm (Exp.) (mg/g)	4.37	5.25	6.46
	E (KJ/mole)	0.625	0.833	1.67