Metal concentration (ppm)
q(mg/g)
Pb(II)
Cd(II)
Zn(II)
5.0 10 15 50 100
0.500 0.9195 1.376 5.000 9.810
0.492 0.903 1.349 4.227 7.976
0.868 1.670 2.406 3.142 3.812