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