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<strong>Preparation and characterization of Scallop shell coated with Fe3O4 nanoparticles for the removal of azo dye: Kinetic, equilibrium and thermodynamic studies</strong>

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Title Statement <strong>Preparation and characterization of Scallop shell coated with Fe3O4 nanoparticles for the removal of azo dye: Kinetic, equilibrium and thermodynamic studies</strong>
 
Added Entry - Uncontrolled Name Shirzad-Siboni, Mehdi ; Department of Environmental Health Engineering, School of public Health, Iran University of Medical Sciences, Tehran, Iran
Mohagheghian, Azita ; Department of Environmental Health Engineering, School of Health, Guilan University of Medical Sciences, Rasht, Iran
Vahidi-Kolur, Robabeh ; Department of Environmental Health Engineering, School of Health, Guilan University of Medical Sciences, Rasht, Iran
Pourmohseni, Melina ; Department of Environmental Health Engineering, School of Health, Guilan University of Medical Sciences, Rasht, Iran
Yang, Jae-Kyu ; Division of General Education, Kwangwoon University, Seoul 139-701, Korea
Department of Environmental Health Engineering, School of Health, Guilan University of Medical Sciences, Rasht, Iran
 
Uncontrolled Index Term Adsorption; Kinetic; Isotherm; Wastewater; Scallop shell-Fe3O4; Acid Red 14
 
Summary, etc. In this study, Scallop shell-Fe<sub>3</sub>O<sub>4 </sub> nanoparticles have been used as adsorbents for investigation of the adsorption kinetics, isotherms and thermodynamic parameters of the Acid Red 14 (AR14) from aqueous solutions at various <em>p</em>H, dye concentrations, adsorbent dosages, temperatures and ionic strength. Scallop shell-Fe<sub>3</sub>O<sub>4 </sub> nanoparticles are synthesized by co-precipitation method in vacuum condition. Efficient coating of Fe<sub>3</sub>O<sub>4 </sub> nanoparticles onto Scallop shell is identified by FT-IR, XRD, SEM, EDX and VSM analysis. Removal efficiency of AR14 by Scallop shell-Fe<sub>3</sub>O<sub>4 </sub> nanoparticles is greater than that by Scallop shell-alone and Fe<sub>3</sub>O<sub>4</sub>-alone. Maximum adsorption is observed at acidic condition. The removal efficiency of AR14 increased with increasing adsorbent dosage, but decreased with increasing initial AR14 concentration and temperature.The adsorption capacity of AR14 onto adsorbent is little affected by the type of ionic strength except carbonate ion. In kinetic studies, removal rate is better described by the pseudo-second order model than the pseudo-first order model and intra-particle diffusion model. Adsorption isotherm is analyzed by both Langmuir and Freundlich equation. Experimental results reveal that the adsorption reaction is exothermic process. Adsorption efficiency of AR14 by Scallop shell-Fe<sub>3</sub>O<sub>4 </sub> nanoparticles is maintained even after six successive cycles.
 
Publication, Distribution, Etc. Indian Journal of Chemical Technology (IJCT)
2018-07-05 13:43:53
 
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http://op.niscair.res.in/index.php/IJCT/article/view/11605
 
Data Source Entry Indian Journal of Chemical Technology (IJCT); ##issue.vol## 25, ##issue.no## 1 (2018): Indian Journal of Chemical Technology
 
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