Table 3.

Adsorption capacity for Fe(III), Pb(II), Zn(II), Cd(II), Ni(II).

Metal ion	Adsorption capacity (mmol/g)
Fe(III)	1.38
Pb(II)	0.35
Zn(II)	0.46
Cd(II)	0.18
Ni(II)	0.50