Modeling of Reactive Blue 19 azo dye removal from colored textile wastewater using L-arginine-functionalized Fe3O4 nanoparticles: Optimization, reusability, kinetic and equilibrium studies

作者：Dalvand, Arash; Nabizadeh, Ramin; Ganjali, Mohammad Reza; Khoobi, Mehdi; Nazmara, Shahrokh; Mahvi, Amir Hossein^*

来源：Journal of Magnetism and Magnetic Materials, 2016, 404: 179-189.

DOI：10.1016/j.jmmm.2015.12.040

• Adsorption
• Box-Behnken design
• Dye Removal
• Fe3O4@l-arginine

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.

• 出版日期2016-4-15