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<p>Adsorption of Congo Red from aqueous solution using doped strontium hexaferrite – zero valent iron nanocomposite: Kinetic, isotherm, and thermodynamic studies</p>

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Title Statement <p>Adsorption of Congo Red from aqueous solution using doped strontium hexaferrite – zero valent iron nanocomposite: Kinetic, isotherm, and thermodynamic studies</p>
 
Added Entry - Uncontrolled Name Mehrjooyan, Shaghayegh ; Department of Chemistry, North Tehran Branch, Islamic Azad University, Tehran, Iran
Sohrabi, Mahmoud reza
Mortazavinik, Saeid ; Department of Chemistry, North Tehran Branch, Islamic Azad University, Tehran, Iran
 
Uncontrolled Index Term Strontium hexaferrite, Zero valent iron, Adsorption, Congo Red, Kinetic, Isotherm
 
Summary, etc. <p>In this study, doped strontium hexaferrite / zero-valent iron nanocomposite (SrFe<sub>12</sub>O<sub>19</sub>/nZVI) was synthesized and its adsorption ability for removing Congo Red (CR) dye from aqueous solution was evaluated. Fourier transform infrared spectroscopy (FT-IR), Scanning electron microscopy (SEM), and X-ray diffraction analysis (XRD) were used to characterize the adsorbent. Experimental conditions, including pH, initial concentration of pollutant, adsorbent weight, contact time, and temperature were optimized. Maximum removal efficiency was achieved at pH of 8.5, initial concentration of CR=20 μg mL<sup>-1</sup>, adsorbent weight of 0.12 g, contact time=15 min and temperature of 25ºC. The results of isotherms showed that Langmuir isotherm was suitable for describing CR adsorption with R<sup>2</sup>=0.9959. Also, kinetic models were investigated, and the data followed the pseudo-second order kinetic model with R<sup>2</sup>=0.9969. In addition, thermodynamic parameters were evaluated.</p>
 
Publication, Distribution, Etc. Journal of Scientific and Industrial Research (JSIR)
2021-08-09 17:12:12
 
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http://op.niscair.res.in/index.php/JSIR/article/view/38152
 
Data Source Entry Journal of Scientific and Industrial Research (JSIR); ##issue.vol## 80, ##issue.no## 05 (21)
 
Language Note en