Table 1. Kinetic Parameters of Adsorption for Uranium in Pseudo-First-Order and Pseudo-Second-Order Models.

		pseudo-first-order			pseudo-second-order
Ce (ppm)	Qe (mg·g–1)	Qe, cal (mg·g–1)	k1 × 10–2 (h–1)	R2	Qe, cal (mg·g–1)	k2 × 10–4 (g·mg–1·h–1)	R2
2	66.10	69.47	7.3	0.8844	66.94	5.10	0.9641
8	300.81	308.22	3.0	0.9652	304.80	1.04	0.9861
32	712.00	740.33	3.7	0.9755	715.41	0.64	0.9945