Synthetic sodalite doped with silver nanoparticles: characterization and mercury (II) removal from aqueous solutions

Z. Tauanov, P. E. Tsakiridis, D. Shah, V. J. Inglezakis*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)
11 Downloads (Pure)

Abstract

In this work, a novel silver nanoparticles-doped synthetic sodalitic composite was synthesized and characterized using advanced characterization methods, namely TEM-EDS, XRD, SEM, XRF, BET, zeta potential, and particle size analysis. The synthesized nanocomposite was used for the removal of Hg2+ from 10 ppm aqueous solutions of initial pH equal to 2. The results showed that the sodalitic nanocomposites removed up to 98.65% of Hg2+, which is ∼16% and 70% higher than the removal achieved by sodalite and parent coal fly ash, respectively. The findings revealed that the Hg2+ removal mechanism is a multifaceted mechanism that predominantly involves adsorption, precipitation and Hg-Ag amalgamation. The study of the anions effect (Cl, NO3, C2H3O2, and SO42−) indicated that the Hg2+ uptake is comparatively higher when Cl anions co-exist with Hg2+ in the solution.

Original languageEnglish
Pages (from-to)951-959
Number of pages9
JournalJournal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering
Volume54
Issue number9
DOIs
Publication statusPublished - 29 Jul 2019

Funding

This research work was carried out with financial support of Nazarbayev University Research Council in the framework of project entitled “Hyperstoichiometry Activity in Metal Nanoparticle Interaction” (Project SOE2015009).

Keywords

  • coal fly ash
  • mercury removal
  • nanocomposites
  • silver nanoparticles
  • synthetic sodalite
  • water treatment

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