Open Journal of Inorganic Non-metallic Materials, 2018, 8, 1-10 http://www.scirp.org/journal/ojinm ISSN Online: 2164-6805 ISSN Print: 2164-6791 DOI: 10.4236/ojinm.2018.81001 Jan. 12, 2018 1 Open Journal of Inorganic Non-metallic Materials Removal of Aniline Blue from Aqueous Solutions Using Ce 1−x Bi x CrO 3 (x = 0, 0.5, 1) Labib A. Awin 1* , Mahmoud A. El-Rais 1 , Abdunnaser M. Etorki 1 , Najat A. Mohamed 2 , Wesal A. Makhlof 1 1 Department of Chemistry, Faculty of Science, University of Tripoli, Tripoli, Libya 2 Department of Chemistry, School of Basic Sciences, Libyan Academy, Tripoli, Libya Abstract The removal of aniline blue dye from aqueous solutions using the A-site doped perovskite Ce 1−x Bi x CrO 3 (x = 0, 0.5, 1) was investigated. The perovskite oxides were synthesised using Sol-Gel method and characterised by conven- tional powder X-ray diffraction technique. The X-ray diffraction measure- ments suggested that doping with Bismuth Ion influences both the crystal structure and the particle size of the oxides, and consequently affects the ad- sorption properties. It was found that both CeCrO 3 and Ce 0.5 Bi 0.5 CrO 3 com- pounds are orthorhombic and have approximate particle size of 87 and 36 nm respectively, whereas BiCrO 3 oxide has rhombohedral space group symmetry and the particle sizes are less than 49 nm. The batch mode study demonstrat- ed that the removal capacities of Aniline Blue at 150 min and pH = 4.3 for Ce 0.5 Bi 0.5 CrO 3 , CeCrO 3 and BiCrO 3 are 779.67, 705.45 and 440.18 mg/g respec- tively. The results reflect the influence of the A site doping on the adsorption properties of the oxides. The removal of Aniline Blue was found to be nega- tively correlated with temperature and pH. Keywords Removal, Aniline Blue, Perovskite Oxides 1. Introduction The residual dyes from textile and printing industries are considered a wide va- riety of organic pollutants introduced into the water resources. There are ten thousand types of textile dyes with an estimated annual production of seven hundred thousand metric tonnes commercially available worldwide. Thirty per- cent of these dyes are used more than one thousand tonnes per year, and ninety How to cite this paper: Awin, L.A., El-Rais, M.A., Etorki, A.M., Mohamed, N.A. and Makhlof, W.A. (2018) Removal of Aniline Blue from Aqueous Solutions Us- ing Ce 1−x Bi x CrO 3 (x = 0, 0.5, 1). Open Journal of Inorganic Non-metallic Mate- rials, 8, 1-10. https://doi.org/10.4236/ojinm.2018.81001 Received: November 27, 2017 Accepted: January 9, 2018 Published: January 12, 2018 Copyright © 2018 by authors and Scientific Research Publishing Inc. This work is licensed under the Creative Commons Attribution International License (CC BY 4.0). http://creativecommons.org/licenses/by/4.0/ Open Access