10.1186/2193-8865-3-60

Removal of ethidium bromide by carbon nanotube in aqueous solution: isotherms, equilibrium mechanism studies, and its comparison with nanoscale of zero valent iron as adsorbent

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  • Fahimeh Najafi*1,
  • Mehdi Norouzi2,
  • Karim Zare3,
  • Ali Fakhri4,
  1. Department of Chemistry, Roudehen Branch, Islamic Azad University, Roudehen, IR
  2. Department of Virology, School of Public Health and Institute of Health Research, Tehran University of Medical Sciences, Tehran, IR
  3. Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, IR Department of Chemistry, Shahid Beheshti University, Tehran, IR
  4. Department of Chemistry, Shahre-Qods Branch, Islamic Azad University, Tehran, IR
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Published in Issue 29-07-2013

How to Cite

Najafi, F., Norouzi, M., Zare, K., & Fakhri, A. (2013). Removal of ethidium bromide by carbon nanotube in aqueous solution: isotherms, equilibrium mechanism studies, and its comparison with nanoscale of zero valent iron as adsorbent. Journal of Nanostructure in Chemistry, 3(1 (December 2013). https://doi.org/10.1186/2193-8865-3-60
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Abstract

Abstract The adsorption of ethidium bromide (EtBr) by single-walled carbon nanotubes (SWCNTs) and nanoscale of zero valent iron (NZVI) were investigated to assess its possible use as adsorbents. The effect of various factors, namely initial adsorbate concentration, adsorbent dosage, and contact time, were studied to identify adsorption capacity of SWCNTs and NZVI surfaces. The experiment demonstrated the maximum EtBr which was obtained at 5 min to attain equilibrium for SWCNTs and NZVI surfaces. Adsorption data were modeled with the Langmuir, Freundlichand, Temkin isotherms. Langmuir adsorption model was used for the mathematical description of the adsorption equilibrium, and the equilibrium data fitted very well with this model for both surfaces as adsorbents. The study showed that SWCNTs and NZVI surfaces could be used as new and efficient adsorbent materials for the removal of EtBr from aqueous solution. Also, the result showed that the SWCNTs were more effective than NZVI in the removal of EtBr from aqueous solution.

Keywords

  • Ethidium bromide,
  • Single-walled carbon nanotube,
  • NZVI,
  • Removal,
  • Isotherms,
  • Kinetics
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References

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