Table 2.

Parameters calculated from various isotherm models (initial As(III) concentration: 50 ppm, pH: 4.0).

Isotherm Model	Linearized Equation	Model Parameters	Value
			Ag@ DMAEMA-g-PET	DMAEMA -g-PET
Langmuir	$\frac{{\mathit{C}}_{\mathit{e}}}{{\mathit{q}}_{\mathit{e}}}=\frac{{\mathit{C}}_{\mathit{e}}}{{\mathit{Q}}_{\mathbf{0}}}+\frac{\mathit{1}}{{\mathit{Q}}_{\mathbf{0}}\mathit{b}}$	$Q_0$, µg/g	79.37	39.84
		b, L/mg	77.85	10.02
		R2	0.89	0.92
Freundlich	$ln{q}_e=ln{k}_F+\frac{1}{n}ln{C}_e$	$k_F$, µg/g	18.46	2.84
		$n$	0.64	1.00
		R2	0.99	1.0
Dubinin–Radushkevich	$ln{q}_e=ln{Q}_d-\beta {\epsilon }^2$	Qd, µg/g	107.39	107.28
		$\beta$, mol2/kJ2	0.002	0.010
		$E_{DR}$, kJ/mol	14.74	6.93
		R2	0.79	0.93