Institute for Color Science and Technology (ICST) Progress in Color, Colorants and Coatings 2008-2134 5 2 2012 10 20 Adsorption of Acid blue 92 dye on modified diatomite by nickel oxide nanoparticles in aqueous solutions 101 116 75798 10.30509/pccc.2012.75798 EN M. R. Khosravi Nikou Department of Gas Engineering, Petroleum University of Technology K. Badii Department of Environmental Research, Institute for Color Science and Technology N. Yousefi Limaee Department of Environmental Research, Institute for Color Science and Technology Journal Article 2012 05 14 Adsorbent prepared from waste plants for the treatment of dyeing effluents have high significance in environmental sustainability. In this research, adsorption of Acid Blue 92AB 92 dye from aqueous solutions on raw and modified diatomite nickel oxide nanoparticles was studied. The effect of different operation parameters such as pH, contact time, initial dye concentration, calcinations and sorbent dosage on the adsorption process was evaluated and optimum experimental conditions were identified. The mean size and the surface morphology of the adsorbent was characterized by SEM, BET, FTIR, XRD and elemental analysis. The maximum percentage removal of AB 92 dye from aqueous solution using 0.1 gr of modified diatomite at pH 2, temperature 25±1°C, agitation speed of 200 rpm, initial dye concentration of 50 mg/L, and for a mixing time period of 90 min was 95.21. Furthermore, under same conditions, the maximum adsorption of dye on raw diatomite was 56.95. https://pccc.icrc.ac.ir/article_75798_3b9a2ab37ce58674d5a10d12d14212ba.pdf