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Response surface methodology, modeling to improve mercury removal from aqueous solutions using L-Cysteine functionalized Multi-walled Carbon Nanotubes

  • Authors (legacy)
    Corresponding: Mohammad Ali Zazouli
    Co-authors: Tabarinia H., Zazouli M.A., Yousefi Z., Kalankesh L., Yazdani Charati J.
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  • gnest_01984_published.pdf
  • Paper ID
    gnest_01984
  • Paper status
    Published
  • Date paper submitted
  • Date paper accepted
  • Date paper online
DOI
https://doi.org/10.30955/gnj.001984
Abstract

The aim of this study was to evaluate the mercury removal from aqueous solutions by using L-Cysteine functionalized Multi-walled Carbon Nanotubes. The effect of pH, adsorbent dose, contact time and mercury concentration in removal efficiency was evaluated. Multi -walled carbon nanotubes were functionalized with L-cysteine. The Response Surface Methodology (RSM) was used to find the optimum process parameters. The results showed that an increase in contact time, pH and adsorbent dosage resulted in an increase of the adsorption rate. However, removal efficiency decreases by increasing mercury concentration. The highest and lowest removal efficiencies of mercury were 89% and 17%, respectively. The maximum adsorption rate was occurring at 120 min. It is concluded that L-Cysteine functionalized multi-walled carbon nanotubes is an effective adsorbent for removal from aqueous solutions.

Keywords
Carbon Nanotubes L-Cysteine Mercury Adsorption
Cite this article
Zazouli, M.A. et al. (2019) “Response surface methodology, modeling to improve mercury removal from aqueous solutions using L-Cysteine functionalized Multi-walled Carbon Nanotubes ”, Global NEST Journal, 21(1). Available at: https://doi.org/10.30955/gnj.001984.
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  • gnest_01984_published.pdf