Adsorption of Anthraquinone Dye AB111 from Aqueous Solution using Synthesized Alumina-Iron Oxide Doped Particles

Adsorption of anthraquinone dye Acid Blue 111 by alumina-iron oxide doped particles prepared by sol-gel method from aqueous solutions was studied. The adsorbent morphology was revealed by FESEM and the crystallographic phase is analyzed by the XRD technique. The effect of adsorbate and adsorbent concentrations, pH value, type of adsorbent and thermodynamic parameters on dye removal by adsorption was studied. The change of dye concentration during the adsorbtion was followed using the UV-Visible spectrophotometer. The change of the adsorbent surface before and after dye removal was observed using the Fourier Transformation-infrared spectroscopy (FT-IR). The adsorption kinetics is in accordance with the pseudo-second-order kinetics model. The Langmuir and Freundlich adsorption isotherm models were used to describe the adsorption process. The thermodynamic study of dye adsorption proves the process is spontaneous with exothermic nature.

Automated summary

The study investigated the adsorption process and mechanism of alumina-iron oxide doped particles prepared by sol-gel method on anthraquinone dye Acid Blue 111. The research focused on the morphology of the adsorbent, crystallographic phase analysis, the influence of adsorbent and adsorbate concentrations, pH value, type of adsorbent on dye removal, as well as the changes in dye concentration and adsorbent surface characteristics during adsorption.