Removal of Hexavalent Chromium from Aqueous Solution by Alumina-Supported Copper Aluminum Oxide Nanoparticles

Abstract

Chromium is a toxic metal pollutant found in effluent of electroplating and metal finishing industries. Copper aluminum oxide nanoparticles supported on alumina were synthesized and evaluated for the removal of Cr(VI) from water. The CANP-A was characterized by X-ray powder diffraction, scanning electron microscopy, and transmission electron microscopy. The adsorbent was evaluated for the removal of chromium (VI) from water. The effect of adsorption time was studied. The experimental data were fitted to Langmuir and Freundlich adsorption model, and it is found that Langmuir model has maximum adsorption capacity.