期刊
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
卷 404, 期 -, 页码 179-189出版社
ELSEVIER
DOI: 10.1016/j.jmmm.2015.12.040
关键词
Adsorption; Box-Behnken design; Dye Removal; Fe3O4@l-arginine
资金
- Tehran University of Medical Sciences
- Center for Water Quality Research [94-01-46-28904]
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 (R-2=0.999) and Freundlich isotherm (R-2=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. (C) 2015 Elsevier B.V. All rights reserved.
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