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Textile dye industry causes environmental impacts due to inappropriate disposal of effluents. Several processes have been studied to effective treatment in the dye removal, one of the main molecular sieves (zeolites). The zeolite material, especially sodalite, has the ability to adsorb the metals and functional chromophore groups. Therefore, the sodalite has characteristics that have attention to the scientific community for the treatment of textile effluents. The aim of this work was to synthesize and evaluate the use of sodalite zeolite in four Si/Al ratios (1.0, 1.5, 2.0 and 2.5) and to test the adsorption capacity in the presence of violet crystal textile dye. As result, the synthesized zeolites presented a characteristic that places them in the adsorbent materials. Among the techniques used for characterization, we have the mean pore diameter between 1.65 and 2.07 nm. X-ray diffraction revealed crystalline phases as sodalite zeolite with the presence of kaolinite, mullite, and quartz. Cation-exchange-capacity was between 0.8871 to 1.017 meq/g, where it had a 14.65% increase of the 2.5-SOD sample. The dye adsorption process was reduced to 12% (44 mg/L). Thus, it has concluded that the obtained sodalite zeolites have potential in the effective removal of dyes from the textile industry.

SYNTHESIS OF SODALITE ZEOLITE TO TREATMENT OF TEXTILE EFFLUENTS