1
Department of Chemistry, Faculty of Science, University of Zanjan
2
Department of Chemistry, Faculty of Science, Azarbaijan Shahid Madani University
3
Department of chemistry,Faculty of Science, University of Zanjan
Abstract
The ZnCoAl layered double hydroxide (LDH) was synthesized by coprecipitation method. The as-prepared sample were characterized by scanning electron microscopy (SEM) and powder X-ray diffraction (XRD). Response surface methodology (RSM) was used to optimize, model and investigate the effect of operational parameters, namely LDH dosage, initial dye concentration, pH and time. Optimal experimental conditions for highest removal efficiency were found as [LDH] = 0.4 g/L, [Dye] = 112 mg/L, pH = 4.8 and Time = 66 min. The predicted degradation efficiency under the optimal conditions was 195 mg g-1. The proposed model was in accordance with the experimental results with R2 of 98.9% and adj-R2 of 97.9%. Equilibrium data were well-represented by the Freundlich isotherm model with Kf = 14.74 which confirms multi-layer adsorption. Kinetic studies showed that pseudo second order model describes the adsorption kinetic behavior well.
Daneshvar, H., Seyed Dorraji, M. S., Amani-ghadim, A., & Rasoulifard, M. H. (2017). Adsorption of Organic Dye on ZnCoAl-LDH: Modeling, Optimization and Kinetic and Isotherm Studies. Journal of Color Science and Technology, 11(3), 225-237.
MLA
H. Daneshvar; M. S. Seyed Dorraji; A.R. Amani-ghadim; M. H. Rasoulifard. "Adsorption of Organic Dye on ZnCoAl-LDH: Modeling, Optimization and Kinetic and Isotherm Studies", Journal of Color Science and Technology, 11, 3, 2017, 225-237.
HARVARD
Daneshvar, H., Seyed Dorraji, M. S., Amani-ghadim, A., Rasoulifard, M. H. (2017). 'Adsorption of Organic Dye on ZnCoAl-LDH: Modeling, Optimization and Kinetic and Isotherm Studies', Journal of Color Science and Technology, 11(3), pp. 225-237.
VANCOUVER
Daneshvar, H., Seyed Dorraji, M. S., Amani-ghadim, A., Rasoulifard, M. H. Adsorption of Organic Dye on ZnCoAl-LDH: Modeling, Optimization and Kinetic and Isotherm Studies. Journal of Color Science and Technology, 2017; 11(3): 225-237.
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