Treatment of Real Textile Wastewater by Adsorption onto Naturel Tunisian Clay

This study focused on the removal of organic matter from real textile effluents by natural clay. The raw clay used in this work was collected from the region of El-Hamma in Tunisia. The clays were characterized by means of Fourier-transform infrared spectroscopy (FTIR) and BET surface area analysis. The different physical and chemical parameters of the textile discharges (pH, Electrical conductivity, SS, COD) were evaluated. Experimental results showed that the maximum COD removal depends on the adsorbent dose and contact time. The adsorption kinetics is well described by the pseudo-first-order model. The equilibrium adsorption data were analysed by Langmuir and Freundlich isotherm models.