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

Table 7

Pseudo-first-order and pseudo-second-order values.

Metal	qe,exp (mg/g)	Pseudo-first-order model			Pseudo-second-order model
		kad (min^−1)	qe,cal (mg/g)	R^2	k (g mg^−1·min^−1)	qe,cal (mg/g)	R^2	h (mg g^−1·min^−1)
Ni	43.06	0.00598	21.55	0.6268	0.00097	47.84	0.9915	2.2143
Cd	46.02	0.06448	29.16	0.7648	0.00054	49.50	0.9839	1.3275
Zn	47.61	0.00621	32.19	0.7693	0.00043	49.75	0.9748	1.0589

q_e,cal: calculated maximum adsorption capacity; q_e,exp: experimentally determined maximum adsorption capacity.