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Zero Valent Iron Nanoparticle-Loaded Nanobentonite Intercalated Carboxymethyl Chitosan for Efficient Removal of Both Anionic and Cationic Dyes
[Image: see text] A zero valent iron-loaded nano-bentonite intercalated carboxymethyl chitosan (nZVI@nBent–CMC) composite was fabricated and characterized by FT-IR, TEM, TEM–EDX, XRD, BET surface area, and zeta potential measurements. The as-fabricated nZVI@nBent–CMC composite exhibited excellent re...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2021
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7948244/ https://www.ncbi.nlm.nih.gov/pubmed/33718725 http://dx.doi.org/10.1021/acsomega.0c06251 |
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author | Eltaweil, Abdelazeem S. El-Tawil, Ashraf M. Abd El-Monaem, Eman M. El-Subruiti, Gehan M. |
author_facet | Eltaweil, Abdelazeem S. El-Tawil, Ashraf M. Abd El-Monaem, Eman M. El-Subruiti, Gehan M. |
author_sort | Eltaweil, Abdelazeem S. |
collection | PubMed |
description | [Image: see text] A zero valent iron-loaded nano-bentonite intercalated carboxymethyl chitosan (nZVI@nBent–CMC) composite was fabricated and characterized by FT-IR, TEM, TEM–EDX, XRD, BET surface area, and zeta potential measurements. The as-fabricated nZVI@nBent–CMC composite exhibited excellent removal efficiency for both anionic Congo red (CR) dye and cationic crystal violet (CV) dye. The maximum uptake capacities of CR and CV onto the nZVI@nBent–CMC composite were found to be 884.95 and 505.05 mg/g, respectively. The adsorption process of both dyes well fitted with the Langmuir isotherm model and pseudo-second order kinetic model. Thermodynamic data clarified that the adsorptions of both CR and CV onto the nZVI@nBent–CMC composite are spontaneous processes. Moreover, the adsorption of CR onto the nZVI@nBent–CMC composite was found to be an exothermic process while that of CV is an endothermic process. The nZVI@nBent–CMC composite also exhibited excellent reusability for both studied dyes without noticeable loss in the removal efficiency, suggesting its validity to remove both anionic and cationic dyes from wastewater. |
format | Online Article Text |
id | pubmed-7948244 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-79482442021-03-12 Zero Valent Iron Nanoparticle-Loaded Nanobentonite Intercalated Carboxymethyl Chitosan for Efficient Removal of Both Anionic and Cationic Dyes Eltaweil, Abdelazeem S. El-Tawil, Ashraf M. Abd El-Monaem, Eman M. El-Subruiti, Gehan M. ACS Omega [Image: see text] A zero valent iron-loaded nano-bentonite intercalated carboxymethyl chitosan (nZVI@nBent–CMC) composite was fabricated and characterized by FT-IR, TEM, TEM–EDX, XRD, BET surface area, and zeta potential measurements. The as-fabricated nZVI@nBent–CMC composite exhibited excellent removal efficiency for both anionic Congo red (CR) dye and cationic crystal violet (CV) dye. The maximum uptake capacities of CR and CV onto the nZVI@nBent–CMC composite were found to be 884.95 and 505.05 mg/g, respectively. The adsorption process of both dyes well fitted with the Langmuir isotherm model and pseudo-second order kinetic model. Thermodynamic data clarified that the adsorptions of both CR and CV onto the nZVI@nBent–CMC composite are spontaneous processes. Moreover, the adsorption of CR onto the nZVI@nBent–CMC composite was found to be an exothermic process while that of CV is an endothermic process. The nZVI@nBent–CMC composite also exhibited excellent reusability for both studied dyes without noticeable loss in the removal efficiency, suggesting its validity to remove both anionic and cationic dyes from wastewater. American Chemical Society 2021-03-01 /pmc/articles/PMC7948244/ /pubmed/33718725 http://dx.doi.org/10.1021/acsomega.0c06251 Text en © 2021 The Authors. Published by American Chemical Society This is an open access article published under an ACS AuthorChoice License (https://creativecommons.org/licenses/by/4.0/) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes. |
spellingShingle | Eltaweil, Abdelazeem S. El-Tawil, Ashraf M. Abd El-Monaem, Eman M. El-Subruiti, Gehan M. Zero Valent Iron Nanoparticle-Loaded Nanobentonite Intercalated Carboxymethyl Chitosan for Efficient Removal of Both Anionic and Cationic Dyes |
title | Zero Valent Iron Nanoparticle-Loaded Nanobentonite
Intercalated Carboxymethyl Chitosan for Efficient Removal of Both
Anionic and Cationic Dyes |
title_full | Zero Valent Iron Nanoparticle-Loaded Nanobentonite
Intercalated Carboxymethyl Chitosan for Efficient Removal of Both
Anionic and Cationic Dyes |
title_fullStr | Zero Valent Iron Nanoparticle-Loaded Nanobentonite
Intercalated Carboxymethyl Chitosan for Efficient Removal of Both
Anionic and Cationic Dyes |
title_full_unstemmed | Zero Valent Iron Nanoparticle-Loaded Nanobentonite
Intercalated Carboxymethyl Chitosan for Efficient Removal of Both
Anionic and Cationic Dyes |
title_short | Zero Valent Iron Nanoparticle-Loaded Nanobentonite
Intercalated Carboxymethyl Chitosan for Efficient Removal of Both
Anionic and Cationic Dyes |
title_sort | zero valent iron nanoparticle-loaded nanobentonite
intercalated carboxymethyl chitosan for efficient removal of both
anionic and cationic dyes |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7948244/ https://www.ncbi.nlm.nih.gov/pubmed/33718725 http://dx.doi.org/10.1021/acsomega.0c06251 |
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