Application of alginate extraction residue for Al(III) ions biosorption: a complete batch system evaluation

The residue derived from the alginate extraction S. filipendula was applied for biosorption of aluminum aqueous medium. adsorptive capacity (RES) completely evaluated in batch mode. effect pH, contact time, initial concentration, and temperature assessed through kinetic, equilibrium, thermodynamic studies. biosorbent characterized prior post-Al by N2 physisorption, Hg porosimetry, He pycnometry, thermogravimetry analyses. Equilibrium achieved 60 min. Kinetics obeys pseudo-second-order model at higher concentrations. Isotherms followed Freundlich low (293.15 K) D-R or Langmuir temperatures (303 313 K). Data modeling indicated occurrence both chemical physical interactions adsorption mechanism using RES. maximum obtained 1.431 mmol/g 293 K. showed a spontaneous, favorable, exotherm character. A simplified design performed, indicating that is viable biosorbent, achieving high percentages removal biomass dosage.