ELIMINATION D’UN POLLUANT ORGANIQUE PAR ADSORPTION

Abstract

The massive and indiscriminate use of ionic liquids in various chemical fields (such as organic synthesis, extraction, or electrochemistry) poses a significant threat to ecosystems and human life, as they are among the most hazardous and least biodegradablepollutants. Therefore, adsorption was chosen for the removal of one of the ionic liquids present in water. This process was carried out using two different materials: one being Mmt K10 and the other powdered activated carbon. The effect of various parameters such as the mass of the adsorbents, the contact time between the adsorbate and adsorbents, the pH, and the agitation speed were studied, along with the point of zero charge of the adsorbents, which was also examined in our study. The kinetics and adsorption isotherms were analyzed using theoretical models through nonlinear regression. It was shown that the adsorption process is always of pseudo-second order. Furthermore, the adsorption isotherms indicate that the adsorption of the ionic liquid follows the Freundlich model for both adsorbents, CA and Mmt K10.