Adsorption Equilibrium for Heavy Metal Divalent Ions (Cu²⁺, Zn²⁺, and Cd²⁺) into Zirconium-Based Ferromagnetic Sorbent

Table 2

Isotherm parameters for sorption of heavy metal ions by the zirconium-based ferromagnetic sorbent.

Isotherm models	Cu^2+	Zn^2+	Cd^2+
Langmuir
	38.1679	43.6681	39.0625
	0.0133	0.0054	0.0104
Freundlich
	0.4441	0.5078	0.5845
	2.2517	1.9693	1.7109
	2.5704	1.3871	1.2306
Dubinin-Radushkevich
	0.10	0.22	0.16
	22.4031	15.1500	18.4654
Temkin
	290.8	362.6	370.9
	0.1398	0.1112	0.1922