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A.A. Emam*,Nora M Hilal, A. A. El-Bayaa, N.A. Badawy, andU.A. Ghiat Chemistry Department, Faculty of Science, Al-Azhar University (Girls), Nasr City, Cairo, Egypt * a_a_emam@yahoo.com Abstract: In this work, application of polyaniline coated onto wood sawdust (PAni/SD) for the removalof anionic dyes namely Reactive Red 43 (RR43 dye) and Direct Orang 85 (DO85 dye) from aqueous solutions is introduced.Maple wood sawdust was characterized by FourierTransform-Infrared Spectroscopy (FTIR),Scanning ElectronMicroscopy (SEM).The effects ofsome important parameters such as pH, initial concentration, sorbent dosage, and contact time onthe uptake of anionic dyes solution were also investigated. In order to get a better comparison, adsorptionexperiments were also carried out using polyaniline coated maple wood saw dust (PAni/MWSD) and without coating (MWSD). It was found that PAni/MWSD can be used to removeanionic dyes such as DO85 and RR43 dyes from aqueous solutions very efficiently. Experimental data were analyzed bythe Langmuir,Freundlichand Temkinmodels of adsorption. Kinetic parameters for the adsorption of anionicdyes for the selected adsorbents are also reported. Application of modified sawdust with polyaniline for the removal of anionic dyesisvery promising for wastewater treatment.

Application of modified Maple Wood Saw Dust with Polyaniline for the Removal of Anionic Dyes From Waste water : Kinetics and IsothermStudies