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Revista de Chimie (Rev. Chim.), Year 2019, Volume 70, Issue 6, 1897-1902

https://doi.org/10.37358/RC.19.6.7242

Claudia Maria Simonescu, Alina Melinescu, Maria Ciuca, Bianca Zarnescu

Removal of Copper(II) Ions from Aqueous Solutions by Hydroxyapatite-Based Materials Prepared from Eggshells

Abstract:

The experimental study aimed to establish the potential applications of the nano- and micrometric powders of hydroxyapatite in the removal processes of Cu(II) ions from synthetic aqueous solutions. For this purpose, hydroxyapatite (HAP) was used in the form of: 1) nanometric powder (labeled nano-HAP), and 2) calcium alginate hydroxyapatite composite microparticles (nicro-HAP-CaAlg). Eggshells have been used as a raw material to obtain HAP. The contact time, pH and Cu(II) concentration in the initial solution have been the main process variables with influence on the Cu(II) ions removal by HAP samples. For both HAP based materials, an optimal pH value of 5 has been established. The nano-HAP powder has a higher Cu(II) adsorption capacity than micro-HAP-CaAlg based on the specific surface area values of nano- and micrometric powders. The adsorption isotherm experiments showed that this process can be described using Langmuir model according to which the adsorption takes place as a monolayer process on an homogeneous surface. The kinetic study revealed that the sorption process of Cu(II) from synthetic aqueous solutions can be described using the pseudo-second order kinetics model according to which the rate-determining step is chemisorption. The values of the retention capacity recommends both powders tested (nano-HAP and micro-HAP-CaAlg) to be used in the Cu(II) loaded water treatment process.
Keywords:
hydroxyapatite nanopowder; calcium alginate-hydroxyapatite composite; copper removal; adsorption isotherm; kinetic studies; hydroxyapatite from egg shell

Issue: 2019, Volume 70, Issue 6
Pages: 1897-1902
Publication date: 2019/7/15
https://doi.org/10.37358/RC.19.6.7242
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Creative Commons License
This article is published under the Creative Commons Attribution 4.0 International License
Citation Styles
Cite this article as:
SIMONESCU, C.M., MELINESCU, A., CIUCA, M., ZARNESCU, B., Removal of Copper(II) Ions from Aqueous Solutions by Hydroxyapatite-Based Materials Prepared from Eggshells, Rev. Chim., 70(6), 2019, 1897-1902.

Vancouver
Simonescu CM, Melinescu A, Ciuca M, Zarnescu B. Removal of Copper(II) Ions from Aqueous Solutions by Hydroxyapatite-Based Materials Prepared from Eggshells. Rev. Chim.[internet]. 2019 Jun;70(6):1897-1902. Available from: https://doi.org/10.37358/RC.19.6.7242


APA 6th edition
Simonescu, C.M., Melinescu, A., Ciuca, M. & Zarnescu, B. (2019). Removal of Copper(II) Ions from Aqueous Solutions by Hydroxyapatite-Based Materials Prepared from Eggshells. Revista de Chimie, 70(6), 1897-1902. https://doi.org/10.37358/RC.19.6.7242


Harvard
Simonescu, C.M., Melinescu, A., Ciuca, M., Zarnescu, B. (2019). 'Removal of Copper(II) Ions from Aqueous Solutions by Hydroxyapatite-Based Materials Prepared from Eggshells', Revista de Chimie, 70(6), pp. 1897-1902. https://doi.org/10.37358/RC.19.6.7242


IEEE
C.M. Simonescu, A. Melinescu, M. Ciuca, B. Zarnescu, "Removal of Copper(II) Ions from Aqueous Solutions by Hydroxyapatite-Based Materials Prepared from Eggshells". Revista de Chimie, vol. 70, no. 6, pp. 1897-1902, 2019. [online]. https://doi.org/10.37358/RC.19.6.7242


Text
Claudia Maria Simonescu, Alina Melinescu, Maria Ciuca, Bianca Zarnescu,
Removal of Copper(II) Ions from Aqueous Solutions by Hydroxyapatite-Based Materials Prepared from Eggshells,
Revista de Chimie,
Volume 70, Issue 6,
2019,
Pages 1897-1902,
ISSN 2668-8212,
https://doi.org/10.37358/RC.19.6.7242.
(https://revistadechimie.ro/Articles.asp?ID=7242)
Keywords: hydroxyapatite nanopowder; calcium alginate-hydroxyapatite composite; copper removal; adsorption isotherm; kinetic studies; hydroxyapatite from egg shell


RIS
TY - JOUR
T1 - Removal of Copper(II) Ions from Aqueous Solutions by Hydroxyapatite-Based Materials Prepared from Eggshells
A1 - Simonescu, Claudia Maria
A2 - Melinescu, Alina
A3 - Ciuca, Maria
A4 - Zarnescu, Bianca
JF - Revista de Chimie
JO - Rev. Chim.
PB - Revista de Chimie SRL
SN - 2668-8212
Y1 - 2019
VL - 70
IS - 6
SP - 1897
EP - 1902
UR - https://doi.org/10.37358/RC.19.6.7242
KW - hydroxyapatite nanopowder
KW - calcium alginate-hydroxyapatite composite
KW - copper removal
KW - adsorption isotherm
KW - kinetic studies
KW - hydroxyapatite from egg shell
ER -


BibTex
@article{RevCh2019P1897,
author = {Simonescu Claudia Maria and Melinescu Alina and Ciuca Maria and Zarnescu Bianca},
title = {Removal of Copper(II) Ions from Aqueous Solutions by Hydroxyapatite-Based Materials Prepared from Eggshells},
journal = {Revista de Chimie},
volume = {70},
number = {6},
pages = {1897-1902},
year = {2019},
issn = {2668-8212},
doi = {https://doi.org/10.37358/RC.19.6.7242},
url = {https://revistadechimie.ro/Articles.asp?ID=7242}
}
 
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