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 3

Effects of ionic interactions of competing ions on sorption intensities, at 297 K.

Sorption intensity ratio for biosorbents
	C. canephora		C. papyrus		Musa spp.
pH	Cd^2+	Pb^2+	Cd^2+	Pb^2+	Cd^2+	Pb^2+
2.5	0.006	0.995	0.154	0.308	0.141	0.661
3.5	0.071	0.894	0.882	0.41	0.255	0.792
4.5	0.081	0.929	0.225	0.576	0.141	0.764
5.5	0.052	0.847	0.8	0.529	0.051	0.69
6.5	0.08	0.85	0.87	0.462	0.19	0.755