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

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

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

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 - Jul 29 2019

Keywords

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

ASJC Scopus subject areas

  • Environmental Engineering

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