Modern Problems of Materials Science
Application of Microcrystalline Cellulose/Polyaniline Composite for Removal of Food Dye Tartrazine from Aqueous Solutions
Keywords
polyaniline, composite, tartrasine, adsorption, polymerization
Abstract
Polyaniline (PAN) and microcrystalline cellulose/polyaniline composite (MCC/PAN) were synthesized by the chemical oxidative in situ polymerization of aniline using ammonium peroxodisulphate as an oxidizing agent in aqueous hydrochloric acid solution. The obtained samples were characterized by infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and X-ray diffraction (XRD).
The adsorption properties of the synthesized sorbents for the food dye tartrazine (TZ) were investigated under static model conditions. These materials were evaluated according to various parameters (contact time between the adsorbent and the adsorbate, dye concentration, and adsorbent mass). The obtained kinetic data of adsorption were described by pseudo-second order kinetic equations. The MCC/PAN composite proved to be a better adsorbent material compared to PAN due to its higher adsorption capacity (q = 99.0 mg g−1), which can be explained by the combination of the adsorption properties of the two materials and the morphology of the composite.
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