Nanocomposites of Magnetite and Layered Double Hydroxide for Recyclable Chromate Removal

Table 2

Adsorption parameters and kinetic fitting results for (a) Mag@LDH-ER and (b) Mag@LDH-CO.

Sample	Initial concentration (ppm)	Adsorbed amount (mg Cr(VI)/g nanocomposite)	Pseudo-first-order		Pseudo-second-order
	(a)	50	17.30	0.003	0.96	0.052	0.99
100		34.71	0.001	0.98	0.030	0.99
200		54.68	0.002	0.93	0.018	0.99
(b)	50	16.07	0.003	0.96	0.053	0.99
	100	31.83	0.002	0.96	0.031	0.99
	200	50.65	0.003	0.91	0.019	0.99