Table 2.

Adsorption kinetic parameters of the pseudo-first-order and pseudo-second-order models for the adsorption of sulfonated lignite by filter paper-templated Mg-Al metal oxides.

Concentration		Pseudo-First-Order Model			Pseudo-Second-Order Model
C 0	qe,exp	qe,cal	K 1 min− 1	R 2	qe,cal	K 2 min− 1	R 2
100	249.88	131.63	0.0089	0.817	268.82	0.912 × 10−4	0.997
150	373.43	193.33	0.01054	0.8325	400.00	0.678 × 10−4	0.994
200	498.43	264.36	0.01231	0.925	520.83	0.886 × 10−4	0.999