Comparison of the microalgae Phormidium tenue and Chlorella vulgaris as biosorbents of Cd and Zn from aqueous environments.

Heavy metals are accumulating into sediments and enriching in aquatic food chains. The efficiency of two microalgae, Phormidium tenue and Chlorella vulgaris, to remove zinc and cadmium from aqueous solutions was studied. The microalgae were incubated in different heavy metal concentrations for 18 days.