Journal
WATER
Volume 13, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/w13070969
Keywords
brine; kinetics; heavy metals; nanoclay; remediation; salinity
Categories
Funding
- Ministry of Education and King Abdulaziz University, DSR, Jeddah, Saudi Arabia
- [IFPHI181-130-2020]
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Halloysite nanoclay is effective in removing heavy metal ions and salinity with a pseudo-second-order kinetic model, leading to lower final concentrations compared to control and standard samples.
Halloysite (HS) nanoclay was used for the environmental treatment of desalination brine water discharge via the adsorptive removal of selected heavy metals ions; zinc, iron, nickel, and copper, as well as salinity. Different techniques were used for the characterization of the HS nanoclay and it was found that HS nanoclay exists as transparent hollow nanotubes with high surface area. The study showed that most of the heavy metal ions could be removed successfully using the HS nanoclay in a few minutes, at normal conditions. The adsorptive removal of zinc, iron, nickel, and copper, as well as salinity on HS nanoclay was explored kinetically. It was concluded that the pseudo-second-order kinetic model was able to describe the remediation process. In addition, it was found that most of the heavy metals and salinity were removed from the desalination plant outfall brine discharge and the final concentrations were lower than those in the control and standard samples.
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