Sorption experiments for cadmium removal using two brown macroalgae Lessonia nigrescens and
Durvillaea antarctica were carried out. Although both types of algae were capable of retaining cadmium,
differences in their performance were observed
The optimum pH was 3.7 ± 0.2, and to achieve the equilibrium,
5 days of contact time were necessary for both biosorbents. The maximum experimental uptake
obtained was similar for the two biosorbents: 95.3 mg Cd g1 by D. antarctica and 109.5 mg Cd g1 by
L. nigrescens.