Préparation et caractérisation de charbons magnétiques appliqueés à l’élimination de l’ibuprofène de l’eau par adsorption

Abstract

Abstract The objective of this work is to prepare an innovative magnetic adsorbent (SBAM) from a conventional adsorbent based on chemically activated sawdust (SBA) and to test the capacity of these two adsorbents for the elimination of ibuprofen (IBP) water. The SBAM adsorbent is prepared by coprecipitation of Fe2+/Fe3+ ferric ions in a basic medium. The study of the adsorption of IBP on these two adsorbents and under different operating conditions (dose of adsorbents, contact time, pH, initial concentration, effect of salts, and temperature) showed that pH is the factor which influences the elimination of IBP the most and that the optimal pH is equal to 2. The kinetic study of the adsorption showed that the elimination of IBP on the two adsorbents is rapid and that the model of the pseudo second order is the most adequate. The experimental results at equilibrium adsorption are best described by the Langmuir model indicating adsorption of IBP on a homogeneous monolayer of the adsorbent. The chemical and thermal regeneration tests of the two adsorbents are satisfactory and their reuse can reach three cycles.