Fabrication of Porous Hydroxyapatite Granules as an Effective Adsorbent for the Removal of Aqueous Pb(II) Ions

Table 6

The values of k and Q_e calculated from pseudo-first-order and pseudo-second-order kinetic equations.

Pseudo-first-order kinetic equation			Pseudo-second-order kinetic equation			Experimental Qe (mg/g)
Qe (mg/g)	k1 (min^−1)	R^2	Qe (mg/g)	k2 (g/mg/min)	R^2
6.32	0.12676	0.92245	5.43	0.03680	0.99648	4.97