Lead removal kinetics from synthetic effluents using Algerian pine, beech and fir sawdust’s: optimization and adsorption mechanism

摘要: The present paper exposes the lead adsorption from synthetic effluents using natural and available materials. Pine, beech fir sawdust’s were used compared for their ability. To optimize sorption phenomenon, some process parameters studied namely temperature, pH, contact time, initial Pb(II) concentration, dosage granulometry, stirring speed medium salinity. materials characterized by FTIR spectroscopy, X-ray diffraction fluorescence. results demonstrated that pine sawdust gave best level (15.5 mg/g) in following conditions at 23 ± 2 °C of temperature : pH 5.45 0.05, 100 mg/L concentration 10 g (per liter solution) composed granules with mean diameter lower than 500 µm. As well, kinetics seem to satisfy Langmuir isotherm model.