The biosorption process involves a solid phase and a liquid
phase containing the dissolved species to be sorbed. From the
biosorption experiments it is possible to evaluate quantitatively
the retention capacity of a metallic contaminant by the biosorbent.
The experimental conditions such as initial metal concentration,
biosorbent mass-to-solution volume ratio (M/V) and solution pH
have influence on the metal retention and equilibrium achieved.
The retention is also a function of the size and shape of the biosorbent
used, and therefore the actual shape of the biosorbent must
be specified.