Adsorption studies on treatment of textile wastewater using low-cost adsorbent

In this work, marine sediment (natural clay) was used as adsorbent for the treatment of textile effluent collected from a textile industry located in Tamil Nadu, India. Experiments were carried out using batch adsorption techniques to study the effect of process variables such as contact time, pH, agitation speed, adsorbent size, and temperature on the removal of organic compounds from textile effluent. The applicability of the various kinetic models and adsorption isotherms was tested. The kinetics of adsorption of effluent was found to be good fit with the pseudo-second-order equation based on the adsorption capacity on the solid phase. The equilibrium data have been analyzed using Freundlich and Langmuir isotherms. It was found that the adsorption data fits better into the Langmuir model. From the experimental results, it is concluded that the marine sediment (natural clay) used in this study was found to be a good adsorbent in the textile effluent treatment.