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        Novel polymorphous aluminosilicate nano minerals: Preparation, characterization and dyes wastewater treatment

        Saleh Nosrati,Kumars Seifpanahi-Shabani,Mohammad Karamoozian 한국화학공학회 2017 Korean Journal of Chemical Engineering Vol.34 No.9

        Polymorphous aluminosilicate, such as Andalusite, Kyanite and Sillimanite, were prepared and characterized by XRF, XRD, FT-IR and SEM analysis. These cheap and accessible nanoparticles were used for removal of Disperse Red 177 and Disperse Blue 60 dyes. The adsorption process was held in a batch system considering the effects of major parameters consist of pH, adsorbent dosage, dye initial concentration and temperature. The obtained results show that both Freundlich and Temkin isotherms suitably fit with experimental data of adsorption of dyes in equilibrium mode. Also, the adsorption of dyes follows and matches pseudo-second-order kinetic model for Andalusite, Kyanite and Sillimanite nanoadsorbents. Thermodynamic study of dye adsorption process proves low randomness, exothermicity and spontaneous reactions. The comparison of three adsorbent efficiencies for adsorption of DR-177 and D-B-60 dyes was as: Andalusite>Sillimanite>Kyanite and Sillimanite>Kyanite>Andalusite, respectively.

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