Environmental Remediation of Desalination Plant Outfall Brine Discharge from Heavy Metals and Salinity Using Halloysite Nanoclay

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...

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Bibliographic Details
Published in:Water (Basel) 2021-04, Vol.13 (7), p.969
Main Authors: Aljohani, Naif S, Al-Farawati, Radwan K, Shabbaj, Ibrahim I, Al-Mur, Bandar A, Kavil, Yasar N, Abdel Salam, Mohamed
Format: Article
Language:English
Subjects:
Acids
Adsorbents
Adsorption
Adsorptivity
Aquatic resources
Brines
Copper
Desalination
Desalination plants
Drinking water
Electrodes
Environmental cleanup
Environmental impact
Environmental remediation
Environmental restoration
Experiments
Freshwater resources
Heavy metals
Iron
Metal ions
Methylene blue
Nanotechnology
Nanotubes
Nickel
Oxytetracycline
Remediation
Saline water conversion
Saline water conversion plants
Salinity
Salinity effects
Saudi Arabia
Voltammetry
Water discharge
Zinc
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Summary: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.
ISSN:2073-4441
2073-4441
DOI:10.3390/w13070969