Table 4. Parameters for Kinetic Models of U(VI) Adsorption on PE and PO₄/PE at pH = 8.2, T = 25 °C, m/V = 0.20 g/L, and C_{[U(VI)]initial} = 50.0 mg/L.

	pseudo-first-order model			pseudo-second-order model
	k1 (h–1)	qe (mg–1)	R12	K′ (g/(mg·h))	qe (mg/g)	R22
PO4/PE	6.27	151.9	0.622	0.114	153.1	0.999
PE	3.02	68.5	0.762	0.104	70.0	0.961