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Removal of Cu2+ and Zn2+ from aqueous medium using ionic polyacrylamides

  • Authors (legacy)
    Corresponding: Luiz Antonio do Nascimento
    Co-authors: Nunes A.F.,Melo R.P.F., Duarte M.M.L. and Barros Neto E.L.
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  • gnest_01741_published.pdf
  • Paper ID
    gnest_01741
  • Paper status
    Published
  • Date paper submitted
  • Date paper accepted
  • Date paper online
DOI
https://doi.org/10.30955/gnj.001741
Abstract

The wastewater produced by the galvanoplasty industry is a serious environmental problem due to the high concentrations of heavy metals. In this study polymers were used in ionic flocculation to treat synthetic wastewater containing metals, applying four types of polyacrylamides with different ionic loads as agents to remove copper and zinc. Metal removal efficiency was assessed considering the influence of polymer concentration, ionic load and pH. Selectivity (Cu2+/Zn2+) at different polymer concentrations was also evaluated. The results confirm that polyacrylamide is efficient in treating wastewater containing heavy metals. These experiments exhibited removal efficiency of around 40% and pH= 4,5; however, efficiency was more than 80% with pH= 7.0 under the same conditions, when polyacrylamides with average ionicity were used.

Keywords
Heavy metals removal ionic polyacrylamides ionic flocculation Analysis of pH Cu2+/Zn2+ Selectivity
Cite this article
Nascimento, L.A. do et al. (2017) “Removal of Cu2+ and Zn2+ from aqueous medium using ionic polyacrylamides”, Global NEST Journal, 19(2). Available at: https://doi.org/10.30955/gnj.001741.
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  • gnest_01741_published.pdf