Pseudo-first-order, pseudo-second-order, and intra-particle diffusion kinetic model parameters.

Kinetic model parameters	T = 301 K, pH = 4
	50 mg L−1	100 mg L−1	150 mg L−1
Pseudo-first-order model
k 1 × 10−2	1.896	1.716	1.579
R 2	0.977	0.989	0.996
q e (mg g−1)	28.6619	74.9686	115.8238
Pseudo-second-order model
k 2 × 10−4	9.285	3.943	1.661
R 2	0.999	0.996	0.998
q e (mg g−1)	40.5186	85.4021	144.0922
q e,exp (mg g−1)	37.369	82.731	127.162
Intra-particle diffusion
k 1	3.4362	9.8428	11.2239
k 2	1.2724	2.4046	4.5495
k 3	0.2118	0.2016	0.9545