Modelling of Adsorption of Zinc and Silver Ions on Analcime and Modified Analcime Zeolites Using Central Composite Design

Document Type: Research Article

Author

Department of Petroleum Engineering, Nour Branch, Islamic Azad University, Nour, I.R. IRAN

Abstract

In this study, Response Surface Methodology (RSM) using Central Composite Design (CCD) was employed to optimize the conditions of independent variables (adsorption time and ion solution concentration) for the removal of Zinc (II) and Ag ions from the aqueous solutions using analcime and modified analcime zeolites (Fe-ANA and Ni-ANA) as efficient and low cost adsorbent. The operation conditions were contact time of 1-13 h and ion concentration of 25-250 ppm at ambient temperature. Under these conditions, the response (the adsorption capacity of zinc (II) and Ag ions) was fitted by a quadratic polynomial regression model and linear model analysis in five-level-two-factor CCD using Design Expert software. The optimal conditions (high removal efficiency) for zinc (II) and Ag+ adsorption were achieved. The analysis of variance demonstrated that ion concentration effect was found to be significant in the adsorption process. Moreover, actual and predicted response plot of ion adsorption in zeolites were investigated.

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[1] Savic I.M., Stojiljkovic S.T., Stojanovic S.B., Moder K., Modeling and Optimization of Fe (III) Adsorption From Water Using Bentonite Clay: Comparison of Central Composite Design and Artificial Neural Network, J. Chem. Eng. Technol., 35: 2007-2014 (2012).

[3] Stojiljkovic S., Stamenkovic M., Kostic D., Miljkovic M., Arsic B., Savic I., Miljkovic V., The Influence of Organic Modification on the Structural and Adsorptive Properties of Bentonite Clay and Its Application for the Removal of Lead, Sci. Sinter., 45: 363-376 (2013).

[4] Bajpaia S., Guptab S.K., Deyc A., Jhaa M.K., Bajpaia V., Joshia S., Guptaa A., Application of Central Composite Design Approach for Removal of Chromium (VI) From Aqueous Solution Using Weakly Anionic Resin: Modeling, Optimization, and Study of Interactive Variables, J. Hazard. Mater., 227:436-444 (2012).

[5] Tian F., Shen Q., Fu Zh., Wu Y., Jia C., Enhanced Adsorption Desulfurization Performance Over Hierarchically Structured Zeolite Y,  Fuel Process. Technol., 28:176-182(2014).

[7] Jin X., Yu B., Chen Z., Arocena J.M., Thring R.W., Adsorption of Orange II Dye in Aqueous Solution Onto Surfactant-Coated Zeolite: Characterization, Kinetic and Thermodynamic Studies, J. Colloid and Inter. Sci., 435:15-20 (2014).

[8] SathyaSelvabala V., Selvaraj D. K., Kalimuthu J., Periyaraman P.M., Subramanian S., Two-Step Biodiesel Production From Calophyllum Inophyllum Oil: Optimization of Modified β-Zeolite Catalyzed Pre-Treatment, Bioresource Technol., 102:1066-1072 (2011).

[13] Savić I.M., Nikolić V.D., Savić I.M., Nikolić L.B., Stanković M.Z., Moder K., Optimization of Total Flavonoid Compound Extraction From Camellia Sinensis Using the Artificial Neural Network and Response Surface Methodology, Hemijska Industrija, 67: 249-259(2013).

[14] Savic I.M., Nikolic V.D., Savic-Gajic I.M., Nikolic L.B., Ibric S.R., Gajic D.G., Optimization of Technological Procedure for Amygdalin Isolation From Plum Seeds (Pruni Domesticae Semen), Frontiers in Plant Science, 6 (2015).

[15] Ahmad A., Imran Ahmad M., Younas M., Khan H., Hassan Shah M., A Comparative Study of Alkaline Hydrolysis of Ethyl Acetate Using Design of Experiments, Iran. J. Chem. Chem. Eng. (IJCCE), 32(4): 33-47(2013).

[16] Azizi S.N., Yousefpour M., Synthesis of Aluminum-Rich Analcime Using an Ethylene Diamine Derivative as Template, Z. Anorg. Allg. Chem., 635:1654-1658(2009).

[17] Azizi S.N., Yousefpour M., Isomorphous Substitution of Fe and Ni Into Analcime Zeolite, Z. Anorg. Allg. Chem., 637:759-765(2011).

[18] Izidoroa J., Fungaroa D. A., Abbottb J. E., Wang Sh., Synthesis of Zeolites X and A From Fly Ashes for Cadmium and Zinc Removal from Aqueous Solutions in Single and Binary Ion Systems, Fuel, 3:827- 834(2013).