The intercalation of Zn/Al-HDL by the diamino-dodecylphosphonic acid: synthesis and properties of adsorption of basic fuchsine
Résumé
In this work, the adsorption of basic fuchsine largely used in industries was studied by Zn/Al-HDL intercalated with diamino-dodecylphosphonic acid (DDPA). The physicochemical characteristics of Zn/Al-DDPA were evaluated by Brunauer–Emmett–Teller method, Fourier transform infrared spectroscopy, X-ray diffraction, and the elementary analysis to determine the rate of grafting. The effect of concentration of fuchsine, reaction times, ionic strength effect and the effect of the temperature were studied. The thermodynamic and kinetic studies were carried out and the results confirmed that all adsorption processes were spontaneous and thermodynamically favorable and that the adsorbent is reusable after three steps of desorption. The best uptake in this study was 90%.