TABLE 3.

Adsorption kinetic parameters for adsorption of Pb(II) on the hydrogel.

Samples	Pseudo-first-order model				Pseudo-second-order model
	qe, exp	qm, cal	K 1	R 2	qm, cal	k2 × 105	k 2i	R 2
	mg/g	mg/g	s−1		mg/g	g/(mg∙s)	mg/(g∙s)
SA-g-PNaA	553.57	418.14	0.0080	0.9721	595.24	1.116	3.953	0.9981
Semi-IPN2	568.99	383.82	0.0095	0.9685	591.72	1.699	5.947	0.9991
t ≤ 50 s, for Pseudo-first-order model					t ≥ 60 s, for Pseudo-second-order model
SA-g-PNaA	553.57	568.75	0.0121	0.9988	574.71	2.609	8.616	0.9998
Semi-IPN2	568.99	580.04	0.0179	0.9990	579.04	2.582	8.627	1.0000