Table 4. Kinetic Parameters for Adsorption of the MB Dye onto RC-nZVI.

	concentration (mg·L–1)
parameter	25	50	100	150	200
qe,exp (mg·g–1)	8.10	15.46	30.40	43.33	53.16
pseudo-first-order
qe, cal (mg·g–1)	8.78	18.14	31.16	39.10	55.76
K1 (min–1)	0.046	0.033	0.035	0.027	0.019
R2	0.988	0.975	0.971	0.961	0.961
(χ2)	0.944
pseudo-second-order
qe cal (mg·g–1)	15.34	28.18	43.22	66.46	155.4
K2 (mg·g–1)	0.0038	0.0021	0.0012	0.0014	0.0002
R2	0.907	0.949	0.970	0.910	0.831
(χ2)	34.529
Elovich
β (g·mg–1)	0.328	0.171	0.102	0.103	0.050
α (mg·g·min–1)	0.575	1.612	2.393	2.92	5.779
R2	0.944	0.961	0.970	0.920	0.918