Journal of Advanced Materials and Technologies

Journal of Advanced Materials and Technologies

Mechanism of Strontium Adsorption on Nanostructured Hydroxyapatite in an Aqueous Solution

Document Type : Research Note Article

Authors
Fatemeh Asjadi 1
Amir Hossein Rahmani 2
Fatemeh Hadi 3
1 1Assistant Professor, Department of Materials Science and Engineering, Faculty of Engineering, University of Zanjan, Zanjan, Zanjan, Iran
2 Bacholar student, Department of Materials Science and Engineering, Faculty of Engineering, University of Zanjan Zanjan, Iran
3 B. Sc. Student, Department of Materials Science and Engineering, Faculty of Engineering, University of Zanjan, Zanjan, Zanjan, Iran
10.30501/jamt.2022.292450.1180
Abstract
Hydroxyapatite (HA) is one of the effective and efficient adsorbents of strontium ions in aqueous solutions. Considering this fact, the current study put its main focus on investigating the structure of hydroxyapatite after strontium adsorption to better understand the mechanism of this process. Nanostructured hydroxyapatite was prepared using a wet chemical method used for the adsorption of strontium ions with various initial concentrations after calcination. The structure of hydroxyapatite was well characterized after adsorption based on X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Energy Dispersive X-Ray Spectroscopy (EDS), and Fourier Transform Infrared Spectrometer (FTIR) analyses. The micro-strain of the structure was also investigated based on fitting the XRD patterns by Voigt function and Williamson-Hall analysis. The crystallite size and degree of anisotropy in the presence of Sr were measured. Interpreting the obtained data and comparing it with different existing adsorption mechanisms suggested dissolution-precipitation as an effective mechanism for strontium adsorption by hydroxyapatite. The SEM images and EDS results also confirmed this mechanism.
Keywords
Strontium
Hydroxyapatite
Mechanism
Adsorption

Subjects

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Journal of Advanced Materials and Technologies
Volume 11, Issue 1
Spring 2022
Pages 23-34

  • Receive Date 03 July 2021
  • Revise Date 12 September 2021
  • Accept Date 14 September 2021