Removal of Janus Green B dye from industrial effluents by natural Iraqi mineral clay

The ability of low cost adsorbent-natural Iraqi palygorskite clay for the removal of Janus Green B from aqueous solution has been investigated by the adsorption process. Investigation was carried out by a series of batch equilibrium experiments to analysis of adsorption equilibrium capacities by studying the influence of adsorbent dosage, contact time, pH, initial dye concentration and particle size of adsorbent at ambient temperature. The equilibrium data was analyzed using Langmuir and Freundlich adsorption isotherm models. The maximum adsorption capacity was 125mg of dye per one gram of natural clay. Results indicate that the adsorption technique was very useful and cost effective for a better removal of dyes, and natural Iraqi clay could be employed as a low cost alternative to commercial activated carbon in industrial wastewater treatment for dyes removal.