Abstract
Chromium (Cr) is one of the most widespread potentially toxic metals in aquatic ecosystems, mainly in the oxidation states +3 and +6, with Cr(VI) being mutagenic and carcinogenic. The adsorption of Cr(VI) by biological material (plant or microbial residual biomass) has been widely studied, aiming at the recovery and reduction of Cr(VI) concentration in wastewater. Thus, considering that o…