Potential Use of Residual Sawdust of Eucalyptus globulus Labill in Pb (II) Adsorption: Modelling of the Kinetics and Equilibrium

The raw sawdust of Eucalyptusglobulus Labill was studied as an alternative residual biomaterial for the adsorption lead (II) in wastewater, evaluating effect pH (3, 4, 5, and 6) a batch system. From characterization biomaterial, it found that biomass has low ash content, from scanning electron microscopy (SEM) microphotographs presents porous morphology with diverse texture presence fiber fragments, which describe heterogeneity material. Fourier transform infrared (FTIR) spectrum showed functional groups NHR, OH, COOH, hydrocarbons, are part structure lignin, cellulose, hemicellulose, pectin. experiments, obtained optimal value 6, reaching removal percentage 96% capacity 4.80 mg/g. model better adjusted kinetics results pseudo-second-order Langmuir Freundlich isothermal models described equilibrium; system prevails chemisorption, supported ion exchange by Pb biomass’ groups. results, eucalyptus is suggested low-cost adsorbent bioadsorption present solution.