Competitive Fixed-Bed Adsorption of Pb(II), Cu(II), and Ni(II) from Aqueous Solution Using Chitosan-Coated Bentonite

Table 2

Column adsorption data and parameters of ternary metal solution of Pb(II), Cu(II), and Ni(II) at different solution flow rates with initial metal concentration of 100 mg/L and bed height of 2.0 cm.

(mL/min)	Metal	(mg/L·h)	(min)	(min)	(mL)	MTZ (cm)	(mg/g)	(mg/g)
0.6	Pb(II)	0.18	260.34	660	396	1.21	11.35	24.55
	Cu(II)	0.21	217.10	540	324	1.20	8.90
	Ni(II)	0.24	165.27	480	288	1.31	8.13
0.8	Pb(II)	0.27	147.46	450	360	1.34	9.43	23.44
	Cu(II)	0.28	124.97	420	336	1.41	7.75
	Ni(II)	0.30	95.38	390	312	1.51	6.26
1.0	Pb(II)	0.33	123.03	390	390	1.37	9.96	23.46
	Cu(II)	0.31	99.70	390	390	1.49	7.71
	Ni(II)	0.37	74.60	330	330	1.55	5.79