Élimination des ions Cu(II) d'une solution aqueuse par les micro-particules de la plante Carpobrotus edulis en système dynamiqueRemoval of Cu(II) ions from aqueous solution by micro-particles of dried Carpobrotus edulis plant in a column system

Abstract

This study reports on the removal of Cu(II) ions from an aqueous solution by adsorption onto dried Carpobrotus edulis plant in a column system. The effect of various process parameters, namely m/V ratio, contact time, initial Cu(II) concentration and pH was studied. The experimental data were analyzed using Freundlich and Langmuir isotherm models to determine the mechanistic parameters related to the adsorption process. The results showed that the adsorption of Cu(II) ions by dried C. edulis increases with the increase of contact time, adsorbent dose, pH and initial Cu(II) concentration in the solution. The maximum adsorption of Cu(II) is reached after one hour of contact time at initial copper concentrations ranging between 10 and 100 mg/L. The m/V ratio of 25 g/L was optimal to obtain a maximum adsorption of copper ions. The maximum adsorption percentage of C. edulis is equal to 94.4%. These results showed that the dried C. edulis plant could be considered as a potential adsorbent material for the removal of Cu(II) from wastewater, using a column adsorption mode.