spectroscopy was used to identify microalgal cell wall functional
groups participating in biosorption by detection of
vibration wave number changes in the sorbent surface,
occurred after metal ion binding. FTIR measurements were
thus performed for natural S. maxima dried cells and the
same biomass enriched in Cu(II) (model single-metal system).
In order to verify diversity of surface functional groups
for different microalgal biosorbent, pristine Spirulina sp.
lyophilisate was examined, as well. Before analyzing, a few
milligrams of each alga, including Cu(II)-loaded S. maxima,
were ground and mixed with potassium bromide disks in
an amount provided the biomaterial concentration of 2%, by