K₂CO₃-Activated Pomelo Peels as a High-Performance Adsorbent for Removal of Cu(II): Preparation, Characterization, and Adsorption Studies

Table 4

Adsorption isotherm parameters.

Model	Constants
	qm	KL	R^2	ARE (%)
Langmuir	151.35	0.0320	0.990	3.12
	KF	n	R^2
Freundlich	52.16	5.804	0.843	3.03
	AT	BT	R^2
Temkin	20.94	19.18	0.840	3.04
	qs	β	R^2
D-R	0.00327	−2.219E − 09	0.845	3.03