Study of the adsorption properties of cellulose/polyaniline composite in relation to Cr(VI) ions from aqueous solutions

Samples of the composite cellulose with polyaniline (Cel/PAn), in which PAn is doped hydrochloric acid synthesis process, were synthesized under mass ratio Cel : aniline (An) equal 2 1. The was carried out by oxidation ammonium peroxydisulfate (APS) aqueous 0.5 M solutions presence a suspension bleached cellulose. adsorption capacity produced samples Cel/PAn regarding Cr(VI) studied used electron spectroscopy (UV-B spectra) and X-ray fluorescence analysis methods. Adsorption static mode from at different (100, 200, 300 mg/L) concentrations for masses (0.1, 0.2, 0.3, 0.4, g) adsorbent. It determined that removal individual occurs almost 98–100 %. vast majority adsorbed within 100–150 min. oxyanions depends on their initial adsorbent (Cel/PAn) mass. kinetics described satisfactorily kinetic equations pseudo-first pseudo-second orders. According to research results, Langmuir Freundlich isotherms plotted. Their shown process sample, best agrees model. chromium remains form Cr(ІІІ). Keywords polyaniline, cellulose, composites, Cr(VI), adsorption.