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Characterization and Adsorption Behavior of Strontium from Aqueous Solutions onto Chitosan-Fuller’s Earth Beads
Fuller’s earth spherical beads using chitosan as a binder were prepared for the removal of strontium ions from aqueous solution. The adsorbents were characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM), which revealed the porous nature of the beads. The Brun...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6473388/ https://www.ncbi.nlm.nih.gov/pubmed/30917560 http://dx.doi.org/10.3390/healthcare7010052 |
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author | Hasan, Shameem Iasir, A. Rafi M. Ghosh, Tushar K. Sen Gupta, Bhaskar Prelas, Mark A. |
author_facet | Hasan, Shameem Iasir, A. Rafi M. Ghosh, Tushar K. Sen Gupta, Bhaskar Prelas, Mark A. |
author_sort | Hasan, Shameem |
collection | PubMed |
description | Fuller’s earth spherical beads using chitosan as a binder were prepared for the removal of strontium ions from aqueous solution. The adsorbents were characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM), which revealed the porous nature of the beads. The Brunauer–Emmett–Teller (BET) surface area of the beads was found to be 48.5 m(2)/g. The adsorption capacities of the beads were evaluated under both batch and dynamic conditions. The adsorption capacity was found to be ~29 mg/g of adsorbent at 298 K when the equilibrium concentration of strontium in the solution was 925 mg/L at pH 6.5. The X-ray photoelectron spectroscopy (XPS) data suggest that strontium uptake by the beads occurs mainly through an ion-exchange process. Kinetic data indicate that the sorption of strontium onto the beads follows anomalous diffusion. Thermodynamic data suggest that the ion-exchange of Sr(2+) on the bead surface was feasible, spontaneous and endothermic in nature. |
format | Online Article Text |
id | pubmed-6473388 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-64733882019-05-02 Characterization and Adsorption Behavior of Strontium from Aqueous Solutions onto Chitosan-Fuller’s Earth Beads Hasan, Shameem Iasir, A. Rafi M. Ghosh, Tushar K. Sen Gupta, Bhaskar Prelas, Mark A. Healthcare (Basel) Article Fuller’s earth spherical beads using chitosan as a binder were prepared for the removal of strontium ions from aqueous solution. The adsorbents were characterized by scanning electron microscopy (SEM) and transmission electron microscopy (TEM), which revealed the porous nature of the beads. The Brunauer–Emmett–Teller (BET) surface area of the beads was found to be 48.5 m(2)/g. The adsorption capacities of the beads were evaluated under both batch and dynamic conditions. The adsorption capacity was found to be ~29 mg/g of adsorbent at 298 K when the equilibrium concentration of strontium in the solution was 925 mg/L at pH 6.5. The X-ray photoelectron spectroscopy (XPS) data suggest that strontium uptake by the beads occurs mainly through an ion-exchange process. Kinetic data indicate that the sorption of strontium onto the beads follows anomalous diffusion. Thermodynamic data suggest that the ion-exchange of Sr(2+) on the bead surface was feasible, spontaneous and endothermic in nature. MDPI 2019-03-26 /pmc/articles/PMC6473388/ /pubmed/30917560 http://dx.doi.org/10.3390/healthcare7010052 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Hasan, Shameem Iasir, A. Rafi M. Ghosh, Tushar K. Sen Gupta, Bhaskar Prelas, Mark A. Characterization and Adsorption Behavior of Strontium from Aqueous Solutions onto Chitosan-Fuller’s Earth Beads |
title | Characterization and Adsorption Behavior of Strontium from Aqueous Solutions onto Chitosan-Fuller’s Earth Beads |
title_full | Characterization and Adsorption Behavior of Strontium from Aqueous Solutions onto Chitosan-Fuller’s Earth Beads |
title_fullStr | Characterization and Adsorption Behavior of Strontium from Aqueous Solutions onto Chitosan-Fuller’s Earth Beads |
title_full_unstemmed | Characterization and Adsorption Behavior of Strontium from Aqueous Solutions onto Chitosan-Fuller’s Earth Beads |
title_short | Characterization and Adsorption Behavior of Strontium from Aqueous Solutions onto Chitosan-Fuller’s Earth Beads |
title_sort | characterization and adsorption behavior of strontium from aqueous solutions onto chitosan-fuller’s earth beads |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6473388/ https://www.ncbi.nlm.nih.gov/pubmed/30917560 http://dx.doi.org/10.3390/healthcare7010052 |
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