Removal of Heavy Metal Ion Using Polymer-Functionalized Activated Carbon: Aspects of Environmental Economic and Chemistry Education

Table 5

Isotherm model parameters.

Metal	Langmuir model			Freundlich model
	qmax (mg/g)	b	R^2	KF	1/n	R^2
Ni^2+	242.5	0.0237	0.9885	10.711	0.5555	0.9565
Cd^2+	226.9	0.0215	0.9911	7.942	0.5791	0.9347
Zn^2+	204.3	0.0141	0.9884	5.631	0.6105	0.9529