Biosorption valorization of floating and submerged macrophytes for heavy-metal removal in a multi-component system

This study comprises the comparative evaluation of floating (Azolla filiculoides) and submerged (Hydrilla verticillata) macrophytes for potential biosorption of Cu(II), Cr(VI), As(III) and Pb(II) from aqueous solution in a multi-component study. Statistically valid Plackett–Burman design of experiments was employed with four heavy metals at two different levels by varying their initial concentration in the range 10-50 mg L−1 for both the...