“…The influence of the biomass concentration on the Chromium (VI) elimination capacity is shown in Fig. 7, in which it is observed that if the biomass concentration increases, the elimination of the metal in solution increases, since with 5 grams of biomass 93.3% of the metal is removed at 2.7 hours, while with 1.0 g, 52% is removed at the same time of incubation, because there are more bioadsorption sites of it, since the amount of bioadsorbent added determines the number of binding sites available for the biosorption of heavy metals [20,21], and these results are like those reported for A. bisporus biomass, when If the amount of biomass is increased from 1 to 5 g, the removal of the metal in solution also increases, with 90.3%, with 1.0 g of biomass at 160 minutes, while with 5 g of biomass, the removal is 100 % at 100 minutes, at pH 1.0, 28oC and 100 rpm [7], for the A. comosus biomass, in which with 5 g of biomass at 10 hours, the metal is fully removed, while with 20 g of biomass, the removal is 100 % at 5 minutes, at pH 1.0, 28oC and 100 rpm [9], for the modified Oyster shell types, if increased the concentration of biomass of 1.65 mg/g to 2.92 mg/g, the removal capacity increase from 29.3% to 58.3% [11], for the chemically modified dried water hyacinth roots, with an optimum adsorbent concentration reported was 14 g/L [12], too, it was observed that quantitative removal of the hexavalent Chromium ion increases with increasing biosorbent dose and maximum removal was achieved by using 0.15 g/50 mL of chicken feather [18], if increase the initial concentration of the biomass, from 1 to 3 g, increase the Chromium (VI) removal with modified biomass from wheat residues (T. aestivum) in wastewater [24], and are different for the C. sativum biomass, if was increasing the amount of biomass, the removal of the metal in solution decreased slightly, well the removal obtained was observed between 100%-80%, with 1-5 g of natural biomass [8].…”