Cargando…

Promoted adsorptive removal of chromium(vi) ions from water by a green-synthesized hybrid magnetic nanocomposite (NFe(3)O(4)Starch-Glu-NFe(3)O(4)ED)

A novel magnetic starch-crosslinked-magnetic ethylenediamine nanocomposite, NFe(3)O(4)Starch-Glu-NFe(3)O(4)ED, was synthesized via microwave irradiation. The characteristics of the assembled NFe(3)O(4)Starch-Glu-NFe(3)O(4)ED nanocomposite were evaluated via XRD, FT-IR, TGA, BET, SEM and HR-TEM analy...

Descripción completa

Detalles Bibliográficos
Autores principales: Mahmoud, Mohamed E., El-Sharkawy, Rehab M., Ibrahim, Ghada A. A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8697855/
https://www.ncbi.nlm.nih.gov/pubmed/35424003
http://dx.doi.org/10.1039/d1ra00961c
_version_ 1784620137866854400
author Mahmoud, Mohamed E.
El-Sharkawy, Rehab M.
Ibrahim, Ghada A. A.
author_facet Mahmoud, Mohamed E.
El-Sharkawy, Rehab M.
Ibrahim, Ghada A. A.
author_sort Mahmoud, Mohamed E.
collection PubMed
description A novel magnetic starch-crosslinked-magnetic ethylenediamine nanocomposite, NFe(3)O(4)Starch-Glu-NFe(3)O(4)ED, was synthesized via microwave irradiation. The characteristics of the assembled NFe(3)O(4)Starch-Glu-NFe(3)O(4)ED nanocomposite were evaluated via XRD, FT-IR, TGA, BET, SEM and HR-TEM analyses. Its particle size was confirmed to be in the range 11.25–17.16 nm. The effectiveness of the designed nanocomposite for the removal of Cr(vi) ions was explored using the batch adsorption technique. Equilibrium results proved that the adsorptive removal of the target metal ions from aqueous solution was highly dependent on the optimized experimental parameters. The maximum adsorptive removal percentage values (%R) of Cr(vi) ions on NFe(3)O(4)Starch-Glu-NFe(3)O(4)ED obtained at pH 2.0 were 85.27%, 91.90%, and 96.47% using 10.0, 25.0, and 50.0 mg L(−1) Cr(vi), respectively, for an equilibrium time of 30 min. The adsorption process was found to be strongly influenced by the presence of interfering salts including NaCl, CaCl(2), KCl, MgCl(2), and NH(4)Cl. Kinetic studies were performed and it was found that the pseudo-second and Elovich models well fitted the experimental data with the possible suggested ion-pair interaction mechanism. Different isotherm models were employed to assess the adsorption equilibrium, which was revealed by fitting Langmuir, Temkin and Freundlich models. The maximum uptake capacity based on the Langmuir model was 210.741 mg g(−1). The effect of temperature and thermodynamics confirmed that adsorption was spontaneous, feasible, and endothermic in nature. Finally, the validity and applicability of using the NFe(3)O(4)Starch-Glu-NFe(3)O(4)ED nanocomposite to remove Cr(vi) ions from real water matrices were confirmed in the range of 91.2–94.7 ± 2.2–3.7%.
format Online
Article
Text
id pubmed-8697855
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher The Royal Society of Chemistry
record_format MEDLINE/PubMed
spelling pubmed-86978552022-04-13 Promoted adsorptive removal of chromium(vi) ions from water by a green-synthesized hybrid magnetic nanocomposite (NFe(3)O(4)Starch-Glu-NFe(3)O(4)ED) Mahmoud, Mohamed E. El-Sharkawy, Rehab M. Ibrahim, Ghada A. A. RSC Adv Chemistry A novel magnetic starch-crosslinked-magnetic ethylenediamine nanocomposite, NFe(3)O(4)Starch-Glu-NFe(3)O(4)ED, was synthesized via microwave irradiation. The characteristics of the assembled NFe(3)O(4)Starch-Glu-NFe(3)O(4)ED nanocomposite were evaluated via XRD, FT-IR, TGA, BET, SEM and HR-TEM analyses. Its particle size was confirmed to be in the range 11.25–17.16 nm. The effectiveness of the designed nanocomposite for the removal of Cr(vi) ions was explored using the batch adsorption technique. Equilibrium results proved that the adsorptive removal of the target metal ions from aqueous solution was highly dependent on the optimized experimental parameters. The maximum adsorptive removal percentage values (%R) of Cr(vi) ions on NFe(3)O(4)Starch-Glu-NFe(3)O(4)ED obtained at pH 2.0 were 85.27%, 91.90%, and 96.47% using 10.0, 25.0, and 50.0 mg L(−1) Cr(vi), respectively, for an equilibrium time of 30 min. The adsorption process was found to be strongly influenced by the presence of interfering salts including NaCl, CaCl(2), KCl, MgCl(2), and NH(4)Cl. Kinetic studies were performed and it was found that the pseudo-second and Elovich models well fitted the experimental data with the possible suggested ion-pair interaction mechanism. Different isotherm models were employed to assess the adsorption equilibrium, which was revealed by fitting Langmuir, Temkin and Freundlich models. The maximum uptake capacity based on the Langmuir model was 210.741 mg g(−1). The effect of temperature and thermodynamics confirmed that adsorption was spontaneous, feasible, and endothermic in nature. Finally, the validity and applicability of using the NFe(3)O(4)Starch-Glu-NFe(3)O(4)ED nanocomposite to remove Cr(vi) ions from real water matrices were confirmed in the range of 91.2–94.7 ± 2.2–3.7%. The Royal Society of Chemistry 2021-04-21 /pmc/articles/PMC8697855/ /pubmed/35424003 http://dx.doi.org/10.1039/d1ra00961c Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Mahmoud, Mohamed E.
El-Sharkawy, Rehab M.
Ibrahim, Ghada A. A.
Promoted adsorptive removal of chromium(vi) ions from water by a green-synthesized hybrid magnetic nanocomposite (NFe(3)O(4)Starch-Glu-NFe(3)O(4)ED)
title Promoted adsorptive removal of chromium(vi) ions from water by a green-synthesized hybrid magnetic nanocomposite (NFe(3)O(4)Starch-Glu-NFe(3)O(4)ED)
title_full Promoted adsorptive removal of chromium(vi) ions from water by a green-synthesized hybrid magnetic nanocomposite (NFe(3)O(4)Starch-Glu-NFe(3)O(4)ED)
title_fullStr Promoted adsorptive removal of chromium(vi) ions from water by a green-synthesized hybrid magnetic nanocomposite (NFe(3)O(4)Starch-Glu-NFe(3)O(4)ED)
title_full_unstemmed Promoted adsorptive removal of chromium(vi) ions from water by a green-synthesized hybrid magnetic nanocomposite (NFe(3)O(4)Starch-Glu-NFe(3)O(4)ED)
title_short Promoted adsorptive removal of chromium(vi) ions from water by a green-synthesized hybrid magnetic nanocomposite (NFe(3)O(4)Starch-Glu-NFe(3)O(4)ED)
title_sort promoted adsorptive removal of chromium(vi) ions from water by a green-synthesized hybrid magnetic nanocomposite (nfe(3)o(4)starch-glu-nfe(3)o(4)ed)
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8697855/
https://www.ncbi.nlm.nih.gov/pubmed/35424003
http://dx.doi.org/10.1039/d1ra00961c
work_keys_str_mv AT mahmoudmohamede promotedadsorptiveremovalofchromiumviionsfromwaterbyagreensynthesizedhybridmagneticnanocompositenfe3o4starchglunfe3o4ed
AT elsharkawyrehabm promotedadsorptiveremovalofchromiumviionsfromwaterbyagreensynthesizedhybridmagneticnanocompositenfe3o4starchglunfe3o4ed
AT ibrahimghadaaa promotedadsorptiveremovalofchromiumviionsfromwaterbyagreensynthesizedhybridmagneticnanocompositenfe3o4starchglunfe3o4ed