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Modeling of Reactive Blue 19 Azo Dye Removal From Colored Textile Wastewater Using L-Arginine-Functionalized Fe3o4 Nanoparticles: Optimization, Reusability, Kinetic and Equilibrium Studies Publisher



Dalvand A1 ; Nabizadeh R1 ; Reza Ganjali M2, 3 ; Khoobi M4, 5 ; Nazmara S1 ; Hossein Mahvi A1, 6, 7
Authors
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Authors Affiliations
  1. 1. Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
  2. 2. Center of Excellence in Electrochemistry, Faculty of Chemistry, University of Tehran, Tehran, Iran
  3. 3. Biosensor Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
  4. 4. Medical Biomaterials Research Center, Tehran University of Medical Sciences, Tehran, Iran
  5. 5. Department of Medicinal Chemistry, Faculty of Pharmacy, Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, 14176, Iran
  6. 6. Center for Solid Waste Research, Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, Iran
  7. 7. National Institute of Health Research, Tehran University of Medical Sciences, Tehran, Iran

Source: Journal of Magnetism and Magnetic Materials Published:2016


Abstract

This study aimed to investigate the removal of Reactive Blue 19 from colored wastewater using Fe3O4 magnetic nanoparticles modified with L-arginine (Fe3O4@L-arginine). In order to investigate the effect of independent variables on dye removal and determining the optimum condition, the Box-Behnken Design (BBD) under Response Surface Methodology (RSM) was employed. Fe3O4@L-arginine nanoparticles were synthesized and characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, and vibrating sample magnetometer. Applying Fe3O4@L-arginine nanoparticles for dye removal showed that; by increasing adsorbent dose and decreasing pH, dye concentration, and ionic strength dye removal has been increased. In the optimum condition, Fe3O4@L-arginine nanoparticles were able to remove dye as high as 96.34% at an initial dye concentration of 50 mg/L, adsorbent dose of 0.74 g/L, and pH 3. The findings indicated that dye removal followed pseudo-second-order kinetic (R2=0.999) and Freundlich isotherm (R2=0.989). Based on the obtained results, as an efficient and reusable adsorbent, Fe3O4@L-arginine nanoparticles can be successfully applied for dye removal from colored wastewater. © 2015 Elsevier B.V. All rights reserved.
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