Copper (Cu) is a toxic heavy metal whose concentration must be reduced to values under the environmental standard before d di t ) discharges can be released into the environment. Due to its characteristics, using different adsorbents for biosorption is a M in , S ue t A. n t in gu r qu Jm convenient method for removing heavy metals. Alginate and chitosan are biopolymers that have shown high potential as adsorbents. This investigation discusses the influence of pH, initial concentration of copper (Co), and the type of immobilized Gon alez y M. GutierrezRojas bead in the adsorption capacity and removal effiiency of copper from synthetic solutions. FT-IR analysis howed cross-linked 259 Crecimiento, sobrev vencia y adaptacion deBifidobacterium infantis a condiciones acidas composite beads of alginate-chitosan (ICB) and alginate-chitosan-Aspergillus australensis (IBB) possess different functional (G o h, i d d p at fd b i f a id s) groups. The analysis made with the kinetic models showed that the adsorption mechanism was governed by diffusion through interface and chemical adsorption. Adsorption capacity depends on pH and Co. Maximum average adsorption capacity was 4.46 L Mayo ga-Reyes, P Bustam nte Cam lo, A. Gutierre-Na a, . Ba rancoFlorido y A. Azaol mg/g at 600 mg/L and pH 4.5 for ICB. Statistical analysis demonstrated that Co, pH, and their interactions significantly affect Espinosa removal efficiency. Besides, the highest removal efficiency was 36.18% +/- 1.87 pH 4.5, 150 mg/L for IBB. Thse biomaterials 265 Statistical approach to optimization of ethanol fermen at ion by Saccharomyces cerev siae in the could be a potential adsorbent for removing copper from wastewater.
