Adsorption Property of Pb(II) by the Laterite-Bentonite Mixture Used as Waste Landfill Liner

Table 4

Values of pseudo-second-order kinetics parameters.

ωb (%)	Pseudo-first-order kinetics parameters			Pseudo-second-order kinetics parameters			Intraparticle diffusion kinetics equation			Ci (mg·L^−1)
	k1 (g·mg^−1·min^−1)	qe (mg·g^−1)	R^2	k2 (g·mg^−1·min^−1)	qe (mg·g^−1)	R^2	ki (g·mg^−1·min^−1)	C (mg·g^−1)	R^2
0	7.73	2.39	0.945	0.21	2.53	0.99996	0.066	1.599	0.231	100
10	10.27	7.34	0.993	0.12	7.61	0.99994	0.169	5.179	0.127	100
20	23.94	11.32	0.997	0.16	11.58	0.99999	0.247	8.101	0.100	100
100	0.97	19.99	1.000	2.36	20.00	1.00000	0.402	14.560	0.064	100