Removal of lead from aqueous solutions using manganese dioxide nanoparticles synthesized by electrochemical method

Document Type : علمی - پژوهشی

Authors

1 Department of Water and Soil, Shahrood University of Technology, Shahrood

2 Institute of Nuclear Science and Technology, Tehran

3 Faculty of Chemistry, University of Tehran, Tehran

Abstract

The objectives of this research were to synthesis Manganese dioxide nanoparticles and determining its efficiency in the removal of lead from aqueous solutions. Consequently, Manganese dioxide nanoparticles were synthesized cathode electrochemical deposition method and the effect of pH, contact time, Lead concentration and nanoparticles amount on Lead removal efficiency were investigated in batch system. Scanning Electron Microscope (SEM), XRD and FTIR were used to characterization of the synthesized Manganese dioxide nanoparticles. SEM results showed that the diameter of the particles is 30-50 nm. Results also showed that the optimum pH value for adsorption was 6.The adsorption capacity increased and the adsorption efficiency decreased with increasing concentration of Lead ions and reducing the amount of adsorbent. In a study of the adsorption isotherm, experimental data from the Langmuir model to follow. The data obtained in this study showed that the absorption of lead absorption kinetics model obeys Hu et al. The overall results of this study showed that the use of manganese dioxide .nanoparticles as a suitable method whit high potential for the removal of lead from aqueous solutions

Keywords

References

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Environmental Sciences
Volume 13, Issue 4
January 2016
Pages 27-36

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