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Silica-coated magnetite nanoparticles as a novel adsorbent for the removal of Iron(II) and Manganese(II) from surface water: Equilibrium, kinetics and thermodynamic studies


 
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1. Title Title of document Silica-coated magnetite nanoparticles as a novel adsorbent for the removal of Iron(II) and Manganese(II) from surface water: Equilibrium, kinetics and thermodynamic studies
 
2. Creator Author's name, affiliation, country Benjamin Olawale Orimolade
 
2. Creator Author's name, affiliation, country Folahan Amoo Adekola
 
2. Creator Author's name, affiliation, country Folahan Amoo Adekola
 
2. Creator Author's name, affiliation, country Ganiyu Babatunde Adebayo
 
2. Creator Author's name, affiliation, country Ganiyu Babatunde Adebayo
 
3. Subject Discipline(s)
 
3. Subject Keyword(s) Magnetite; adsorption; isotherm; kinetic; Manganese; Iron
 
4. Description Abstract

Silica-coated magnetite nanoparticle was synthesized as model adsorbent for the removal of Fe(II) and Mn(II) which are major contaminants of surface water. Prepared adsorbent was fully characterized using Fourier Transform Infra-red spectroscopy, Scanning Electron Microscopy, X-Ray Diffraction and X-Ray Fluorescence.  The optimum conditions of adsorption were determined by investigating the effect of initial metal ion concentration, contact time, adsorbent dose, pH of aqueous solution and temperature. Adsorption equilibrium time was found to be 60 min for both Fe(II) and Mn(II). The equilibrium adsorption experimental data for the two metals were found to fit the Langmuir adsorption isotherms best with a regression value of 0.989 and 0.979 for Fe(II) and Mn(II) respectively. The pseudo second order kinetic model was found to describe the adsorption kinetics for both metals more effectively. The adsorption processes involving both metals were endothermic. The adsorbent was finally applied to typical raw water with initial manganese and iron concentrations of 1.45 mg/l and 3.67 mg/l, respectively, and the removal efficiency was 90 % for Mn and 47 % for Fe.

 
5. Publisher Organizing agency, location
 
6. Contributor Sponsor(s)
 
7. Date (YYYY-MM-DD) 30-07-2018
 
8. Type Status & genre Peer-reviewed Article
 
8. Type Type
 
9. Format File format PDF
 
10. Identifier Uniform Resource Identifier https://revues.imist.ma/index.php/morjchem/article/view/9802
 
10. Identifier Digital Object Identifier (DOI) https://doi.org/10.48317/IMIST.PRSM/morjchem-v6i4.9802
 
11. Source Title; vol., no. (year) Moroccan Journal of Chemistry; Vol 6, No 4 (2018)
 
12. Language English=en en
 
13. Relation Supp. Files
 
14. Coverage Geo-spatial location, chronological period, research sample (gender, age, etc.)
 
15. Rights Copyright and permissions Copyright (c) 2018 Moroccan Journal of Chemistry