Fe3O4 Nanoparticles: Synthesis, Characterization and Application in Removal of Iron from Aqueous Solution and Groundwater A.A.
Swelam, A., Awad, M., Gedamy, Y., Bedair, A. (2019). Fe3O4 Nanoparticles: Synthesis, Characterization and Application in Removal of Iron from Aqueous Solution and Groundwater A.A.. EKB Journal Management System, 62(5), 789-709. doi: 10.21608/ejchem.2019.5527.1488
Abd El-Samih Ahmed Swelam; Magdy Bahi El-Deen Awad; yahia Ragab Gedamy; Ahmed Tawfik Bedair. "Fe3O4 Nanoparticles: Synthesis, Characterization and Application in Removal of Iron from Aqueous Solution and Groundwater A.A.". EKB Journal Management System, 62, 5, 2019, 789-709. doi: 10.21608/ejchem.2019.5527.1488
Swelam, A., Awad, M., Gedamy, Y., Bedair, A. (2019). 'Fe3O4 Nanoparticles: Synthesis, Characterization and Application in Removal of Iron from Aqueous Solution and Groundwater A.A.', EKB Journal Management System, 62(5), pp. 789-709. doi: 10.21608/ejchem.2019.5527.1488
Swelam, A., Awad, M., Gedamy, Y., Bedair, A. Fe3O4 Nanoparticles: Synthesis, Characterization and Application in Removal of Iron from Aqueous Solution and Groundwater A.A.. EKB Journal Management System, 2019; 62(5): 789-709. doi: 10.21608/ejchem.2019.5527.1488

Fe3O4 Nanoparticles: Synthesis, Characterization and Application in Removal of Iron from Aqueous Solution and Groundwater A.A.

Egyptian Journal of Chemistry
Article 2, Volume 62, Issue 5, May 2019, Page 789-709  XML PDF (3.01 MB)
Document Type: Original Article
DOI: 10.21608/ejchem.2019.5527.1488
View on SCiNiTO View on SCiNiTO
Authors
Abd El-Samih Ahmed Swelam1; Magdy Bahi El-Deen Awad1; yahia Ragab Gedamy2; Ahmed Tawfik Bedair email 3
1Professor of Physical Chemistry, Chemistry Department, Faculty of Science, Al-Azhar University
2hydrogeochemistry department desert research center
3Physical Chemistry Department, Faculty of Science, Al - Azhar University, Nasr City, Egypt.
Abstract
Magnetic iron oxide nanoparticles were synthesized by co-precipitation method and characterized by using Fourier transform infrared spectroscopy (FT-IR), X-ray diffractometer (XRD), and scanning electron microscopy (SEM). Adsorption properties of the synthesized magnetic iron oxide nanoparticles towards iron ions were systematically investigated, including pH effect, adsorbent dosage, initial concentration, temperature, adsorption equilibrium and adsorption kinetics. The adsorption kinetics was studied by the pseudo first-order and pseudo second-order models. The adsorption isotherm for the removed iron ions were described by the Langmuir, Freundlich, D-R and Temkin isotherm models. The obtained results reveled that, the maximum adsorption capacity for Fe ions was 28.2mg/g and the removal percentage reached nearly 85% at adsorbent dosage 0.22g, temp. 600C, time 210min., pH 4 and initial concentration 117.3mg/L. The adsorption capacity was increased with the increase of temperature and decrease of adsorbent dosage. The reaction obeyed both the pseudo second-order model and Langmuir isotherm model (with correlating constant R2 is 0.98) . Also, the calculated mean free energy of the sorption from the Dubinin–Radushkevich isotherm was found to be 207.7KJ/Mol for iron ions, indicating a chemical sorption. With high regression coefficients for Fe ions at 302K, and thermodynamic calculations suggested that the adsorption of iron ions onto the magnetic iron oxide nanoparticles is an endothermic process.
Keywords
Magnetic iron oxide nanoparticles; Heavy metals ions; adsorption isotherms; Kinetics; Thermodynamics
Statistics
Article View: 822
PDF Download: 870