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

Zhandos Tauanov, P. E. Tsakiridis, D. Shah, Vasileios Inglezakis

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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 Hg 2+ from 10 ppm aqueous solutions of initial pH equal to 2. The results showed that the sodalitic nanocomposites removed up to 98.65% of Hg 2+ , which is ∼16% and 70% higher than the removal achieved by sodalite and parent coal fly ash, respectively. The findings revealed that the Hg 2+ removal mechanism is a multifaceted mechanism that predominantly involves adsorption, precipitation and Hg-Ag amalgamation. The study of the anions effect (Cl , NO 3 , C 2 H 3 O 2 , and SO 4 2− ) indicated that the Hg 2+ uptake is comparatively higher when Cl anions co-exist with Hg 2+ in the solution.

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Silver
Nanoparticles
Nanocomposites
Negative ions
Zeta potential
Fly ash
Particle size analysis
Energy dispersive spectroscopy
Coal
Transmission electron microscopy
Adsorption
Scanning electron microscopy
Composite materials

Keywords

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

ASJC Scopus subject areas

  • Environmental Engineering

Cite this

@article{e49f7d5ca4884caf906cbd77ba8b0148,
title = "Synthetic sodalite doped with silver nanoparticles: Characterization and mercury (II) removal from aqueous solutions",
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 Hg 2+ from 10 ppm aqueous solutions of initial pH equal to 2. The results showed that the sodalitic nanocomposites removed up to 98.65{\%} of Hg 2+ , which is ∼16{\%} and 70{\%} higher than the removal achieved by sodalite and parent coal fly ash, respectively. The findings revealed that the Hg 2+ removal mechanism is a multifaceted mechanism that predominantly involves adsorption, precipitation and Hg-Ag amalgamation. The study of the anions effect (Cl − , NO 3 − , C 2 H 3 O 2 − , and SO 4 2− ) indicated that the Hg 2+ uptake is comparatively higher when Cl − anions co-exist with Hg 2+ in the solution.",
keywords = "Coal fly ash, mercury removal, nanocomposites, silver nanoparticles, synthetic sodalite, water treatment",
author = "Zhandos Tauanov and Tsakiridis, {P. E.} and D. Shah and Vasileios Inglezakis",
year = "2019",
month = "1",
day = "1",
doi = "10.1080/10934529.2019.1611129",
language = "English",
journal = "Journal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering",
issn = "1093-4529",
publisher = "Taylor and Francis",

}

TY - JOUR

T1 - Synthetic sodalite doped with silver nanoparticles

T2 - Characterization and mercury (II) removal from aqueous solutions

AU - Tauanov, Zhandos

AU - Tsakiridis, P. E.

AU - Shah, D.

AU - Inglezakis, Vasileios

PY - 2019/1/1

Y1 - 2019/1/1

N2 - 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 Hg 2+ from 10 ppm aqueous solutions of initial pH equal to 2. The results showed that the sodalitic nanocomposites removed up to 98.65% of Hg 2+ , which is ∼16% and 70% higher than the removal achieved by sodalite and parent coal fly ash, respectively. The findings revealed that the Hg 2+ removal mechanism is a multifaceted mechanism that predominantly involves adsorption, precipitation and Hg-Ag amalgamation. The study of the anions effect (Cl − , NO 3 − , C 2 H 3 O 2 − , and SO 4 2− ) indicated that the Hg 2+ uptake is comparatively higher when Cl − anions co-exist with Hg 2+ in the solution.

AB - 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 Hg 2+ from 10 ppm aqueous solutions of initial pH equal to 2. The results showed that the sodalitic nanocomposites removed up to 98.65% of Hg 2+ , which is ∼16% and 70% higher than the removal achieved by sodalite and parent coal fly ash, respectively. The findings revealed that the Hg 2+ removal mechanism is a multifaceted mechanism that predominantly involves adsorption, precipitation and Hg-Ag amalgamation. The study of the anions effect (Cl − , NO 3 − , C 2 H 3 O 2 − , and SO 4 2− ) indicated that the Hg 2+ uptake is comparatively higher when Cl − anions co-exist with Hg 2+ in the solution.

KW - Coal fly ash

KW - mercury removal

KW - nanocomposites

KW - silver nanoparticles

KW - synthetic sodalite

KW - water treatment

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DO - 10.1080/10934529.2019.1611129

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JO - Journal of Environmental Science and Health - Part A Toxic/Hazardous Substances and Environmental Engineering

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