Evaluation of Zeolitic Materials Synthetized from Coal Fly Ash as Potential Cd(II) Adsorbents from Aqueous Solutions

Simonescu, Claudia Maria; Melinescu, Alina; Cristina, Culita Daniela; Hasan, Dhuha; Zarnescu, Bianca; Ciuca, Maria

Claudia Maria Simonescu, Alina Melinescu, Culita Daniela Cristina, Dhuha Hasan, Bianca Zarnescu, Maria Ciuca

Evaluation of Zeolitic Materials Synthetized from Coal Fly Ash as Potential Cd(II) Adsorbents from Aqueous Solutions

Abstract:

The aim of this research paper is to present a simple and efficient method to prepare zeolite materials from thermal power plant fly ash which is one of the most important waste resulted from power plants. The method of preparation of zeolite materials consists of alkaline activation followed by calcination at different temperatures. The zeolite materials prepared were studied by FT-IR spectroscopy, specific surface determination, X-ray fluorescence spectroscopy (XRF), scanning electron microscopy (SEM) and particle size composition. XRF data indicated that the zeolites synthesized are characterized by Si/Al ratio between 1.21 and 1.26, being mainly composed of Na-P1 zeolite. The optimum conditions of cadmium ions removal process by adsorption onto zeolite materials have been determined. It was concluded that increase of calcination temperature has as result increase of specific surface area and cosequently the increase of sorption capacity. An equilibrium, kinetic and thermodynamic study has been performed. The high value of correlation coefficient for the Langmuir isotherm reveals that the Cd(II) sorption onto zeolite materials occurs as a monolayer coverage of Cd(II) ions on homogenous zeolite surface. The pseudo-second-order kinetic model fits the experimental results of the Cd(II) sorption onto zeolite materials processes. As a results, the mechanism involved in Cd(II) sorption onto zeolite materials is based on chemical reactions. The thermodynamic results indicate that the Cd(II) adsorption process is more encouraging at higher temperatures.The results established that valuable NaP1 zeolite materials with high adsorption capacity can be prepared from thermal power plant fly ash through a simple method. The materials prepared can be utilized to remediate cadmium ions-bearing wastewater.

Keywords:
thermal power plant fly ash; zeolite materials; cadmium pollution; cadmium removal

Issue: 2020, Volume 71, Issue 9

Pages: 125-142

Publication date: 2020/9/5

https://doi.org/10.37358/RC.20.9.8323

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This article is published under the Creative Commons Attribution 4.0 International License

Citation Styles

Cite this article as:
SIMONESCU, C.M., MELINESCU, A., CRISTINA, C.D., HASAN, D., ZARNESCU, B., CIUCA, M., Evaluation of Zeolitic Materials Synthetized from Coal Fly Ash as Potential Cd(II) Adsorbents from Aqueous Solutions, Rev. Chim., 71(9), 2020, 125-142.

Vancouver
Simonescu CM, Melinescu A, Cristina CD, Hasan D, Zarnescu B, Ciuca M. Evaluation of Zeolitic Materials Synthetized from Coal Fly Ash as Potential Cd(II) Adsorbents from Aqueous Solutions. Rev. Chim.[internet]. 2020 Sep;71(9):125-142. Available from: https://doi.org/10.37358/RC.20.9.8323

APA 6th edition
Simonescu, C.M., Melinescu, A., Cristina, C.D., Hasan, D., Zarnescu, B. & Ciuca, M. (2020). Evaluation of Zeolitic Materials Synthetized from Coal Fly Ash as Potential Cd(II) Adsorbents from Aqueous Solutions. Revista de Chimie, 71(9), 125-142. https://doi.org/10.37358/RC.20.9.8323

Harvard
Simonescu, C.M., Melinescu, A., Cristina, C.D., Hasan, D., Zarnescu, B., Ciuca, M. (2020). 'Evaluation of Zeolitic Materials Synthetized from Coal Fly Ash as Potential Cd(II) Adsorbents from Aqueous Solutions', Revista de Chimie, 71(9), pp. 125-142. https://doi.org/10.37358/RC.20.9.8323

IEEE
C.M. Simonescu, A. Melinescu, C.D. Cristina, D. Hasan, B. Zarnescu, M. Ciuca, "Evaluation of Zeolitic Materials Synthetized from Coal Fly Ash as Potential Cd(II) Adsorbents from Aqueous Solutions". Revista de Chimie, vol. 71, no. 9, pp. 125-142, 2020. [online]. https://doi.org/10.37358/RC.20.9.8323

Text
Claudia Maria Simonescu, Alina Melinescu, Culita Daniela Cristina, Dhuha Hasan, Bianca Zarnescu, Maria Ciuca,
Evaluation of Zeolitic Materials Synthetized from Coal Fly Ash as Potential Cd(II) Adsorbents from Aqueous Solutions,
Revista de Chimie,
Volume 71, Issue 9,
2020,
Pages 125-142,
ISSN 2668-8212,
https://doi.org/10.37358/RC.20.9.8323.
(https://revistadechimie.ro/Articles.asp?ID=8323)
Keywords: thermal power plant fly ash; zeolite materials; cadmium pollution; cadmium removal

RIS
TY - JOUR
T1 - Evaluation of Zeolitic Materials Synthetized from Coal Fly Ash as Potential Cd(II) Adsorbents from Aqueous Solutions
A1 - Simonescu, Claudia Maria
A2 - Melinescu, Alina
A3 - Cristina, Culita Daniela
A4 - Hasan, Dhuha
A5 - Zarnescu, Bianca
A6 - Ciuca, Maria
JF - Revista de Chimie
JO - Rev. Chim.
PB - Revista de Chimie SRL
SN - 2668-8212
Y1 - 2020
VL - 71
IS - 9
SP - 125
EP - 142
UR - https://doi.org/10.37358/RC.20.9.8323
KW - thermal power plant fly ash
KW - zeolite materials
KW - cadmium pollution
KW - cadmium removal
ER -

BibTex
@article{RevCh2020P125,
author = {Simonescu Claudia Maria and Melinescu Alina and Cristina Culita Daniela and Hasan Dhuha and Zarnescu Bianca and Ciuca Maria},
title = {Evaluation of Zeolitic Materials Synthetized from Coal Fly Ash as Potential Cd(II) Adsorbents from Aqueous Solutions},
journal = {Revista de Chimie},
volume = {71},
number = {9},
pages = {125-142},
year = {2020},
issn = {2668-8212},
doi = {https://doi.org/10.37358/RC.20.9.8323},
url = {https://revistadechimie.ro/Articles.asp?ID=8323}
}

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