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 2

Exchangeable acidity (EA) and cation exchange capacity (CEC) of the biomass [22].

Biomass	pH	EA (cmol/kg)	CEC (cmol/kg)
Musa spp.
Treated	5.49	0.19	53
Untreated	5.22	1.64	142
C. canephora
Treated	5.41	0.22	95
Untreated	4.91	1.66	91
C. papyrus
Treated	5.95	0.42	36
Untreated	5.39	0.95	85