The present experiment could be used for the absorption of
heavy metals using low-cost biosorbent such as mangosteen shell,
with sorption capacity 3.56 mg/g, 3.15 mg/g and 0.34 mg/g for
Pb(II), Cd(II) and Co(II), respectively. We also found that, the Pb(II),
Cd(II) and Co(II) uptake by un-extracted yields of mangosteen shell
was higher when comparing with sorption of metal ions by using
extracted dyes of mangosteen shell, namely decreased from 0.82 to
0.39 mg/g for Pb(II), 1.24 to 0.18 mg/g for Cd(II) and 1.54 mg/g for
Co(II), respectively.