Abstract
Treatment of wastewater is one of the biggest problems faced by textile and dyestuff manufacturers. The purpose of the present study was to investigate the suitability of using zeolitic materials as low cost media for removal of color from dye effluents. Zeolite synthesized from cyclone ash (ZCA) was modified with hexadecyltrimethylammonium bromide and the adsorption efficiencies for unmodified and surfactant-modified zeolite (SMZCA) were studied using a batch equilibration method. SMZCA presented higher color removal efficiency than ZCA, removing 60-100% of color for textile effluents and around 39% for effluent of dyestuff manufacturing industry. The effects of dilution on color removal were evaluated. The pH values of the treated effluent were according to the Brazilian legislation. It can be concluded that surfactant modified-zeolite from cyclone ash is a promising low-cost adsorbent for color removal from textile wastewater.
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