Table 1.

Langmuir and Freundlich isotherm constants for the uptake of lead (II) cation at room temperature.

Langmuir Constants			Freundlich Constants
${\mathit{q}}_{\mathit{m}}$ (mg/g)	${\mathit{K}}_{\mathit{L}}$ (mg/L)	R ${}^{\mathbf{2}}$	${\mathit{K}}_{\mathit{f}}$	n	R ${}^{\mathbf{2}}$
32.77	6.07	0.95	5.51	1.66	0.99