Competitive and Noncompetitive Batch Sorption Studies of Aqueous Cd(II) and Pb(II) Uptake onto Coffea canephora Husks, Cyperus papyrus Stems, and Musa spp. Peels

Table 5

The pseudo-second-order model parameters.

Biomass	Metal ion	(mg/g)	(g/mg/min)
C. canephora	Cd^2+	1.178	0.25	0.9985
	Pb^2+	1.581	0.67	1
Musa spp.	Cd^2+	0.355	0.747	0.8816
	Pb^2+	1.56	0.169	0.9996
C. papyrus	Cd^2+	0.12	4.152	0.8917
	Pb^2+	1.732	0.015	0.8941