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

Table 3

Column adsorption data and parameters of ternary metal solution of Pb(II), Cu(II), and Ni(II) at different bed heights with initial metal concentration of 100 mg/L and flow rate of 0.6 mL/min.

(cm)	Metal	(mg/L·hr)	(min)	(min)	(mL)	MTZ (cm)	(mg/g)	(mg/g)
1.0	Pb(II)	0.20	117.58	540	216	0.78	9.47	24.58
	Cu(II)	0.22	98.57	480	192	0.79	8.10
	Ni(II)	0.22	77.19	480	192	0.84	7.01
2.0	Pb(II)	0.13	338.19	870	348	1.22	10.65	26.67
	Cu(II)	0.15	273.76	780	312	1.30	8.70
	Ni(II)	0.19	202.83	630	252	1.36	7.32
3.0	Pb(II)	0.07	406.68	1560	624	2.22	11.47	28.13
	Cu(II)	0.07	344.07	1440	576	2.30	8.76
	Ni(II)	0.08	283.23	1380	552	2.30	7.91