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Chemically modified rice husk as an effective adsorbent for removal of palladium ions

Bio-matrix of rice husk and Mobil Composition of Matter No. 41 (MCM-41) was modified with alizarin red S for preconcentration of Pd(2+) prior flame atomic absorption spectrometric determination. The prepared bio-matrix (RH@MCM-41@ARS) was characterized by Fourier-transform infrared spectroscopy (FTI...

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Autores principales: Nabieh, Kareem A., Mortada, Wael I., Helmy, Tamer E., Kenawy, Ibrahim M.M., Abou El-Reash, Yasmeen G.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7840862/
https://www.ncbi.nlm.nih.gov/pubmed/33537487
http://dx.doi.org/10.1016/j.heliyon.2021.e06062
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author Nabieh, Kareem A.
Mortada, Wael I.
Helmy, Tamer E.
Kenawy, Ibrahim M.M.
Abou El-Reash, Yasmeen G.
author_facet Nabieh, Kareem A.
Mortada, Wael I.
Helmy, Tamer E.
Kenawy, Ibrahim M.M.
Abou El-Reash, Yasmeen G.
author_sort Nabieh, Kareem A.
collection PubMed
description Bio-matrix of rice husk and Mobil Composition of Matter No. 41 (MCM-41) was modified with alizarin red S for preconcentration of Pd(2+) prior flame atomic absorption spectrometric determination. The prepared bio-matrix (RH@MCM-41@ARS) was characterized by Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), transmission electron microscope (TEM), scanning electron microscope, energy dispersive X-ray spectrometer (SEM/EDX) and surface area studies. The impact of different parameters (solution pH, amount of sorbent, contact time, sample volume, initial Pd(2+) concentration and diverse ions) on the uptake of Pd(2+) were evaluated. The maximum adsorption capacity of Pd(2+) onto RH@MCM-41@ARS was 198.2 mg g(−1) at optimum conditions. Applying the optimized procedure as a preconcentration step led to limit of detection of 0.13 μg L(−1) and dynamic analytical range up to 500 μg L(−1). The sorbent was regenerated by 0.5 mol L(−1) thiourea for at least 10 cycles without significant reduction of adsorption capacity. The method was applied for preconcentration of Pd(2+) from real samples.
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spelling pubmed-78408622021-02-02 Chemically modified rice husk as an effective adsorbent for removal of palladium ions Nabieh, Kareem A. Mortada, Wael I. Helmy, Tamer E. Kenawy, Ibrahim M.M. Abou El-Reash, Yasmeen G. Heliyon Research Article Bio-matrix of rice husk and Mobil Composition of Matter No. 41 (MCM-41) was modified with alizarin red S for preconcentration of Pd(2+) prior flame atomic absorption spectrometric determination. The prepared bio-matrix (RH@MCM-41@ARS) was characterized by Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), transmission electron microscope (TEM), scanning electron microscope, energy dispersive X-ray spectrometer (SEM/EDX) and surface area studies. The impact of different parameters (solution pH, amount of sorbent, contact time, sample volume, initial Pd(2+) concentration and diverse ions) on the uptake of Pd(2+) were evaluated. The maximum adsorption capacity of Pd(2+) onto RH@MCM-41@ARS was 198.2 mg g(−1) at optimum conditions. Applying the optimized procedure as a preconcentration step led to limit of detection of 0.13 μg L(−1) and dynamic analytical range up to 500 μg L(−1). The sorbent was regenerated by 0.5 mol L(−1) thiourea for at least 10 cycles without significant reduction of adsorption capacity. The method was applied for preconcentration of Pd(2+) from real samples. Elsevier 2021-01-22 /pmc/articles/PMC7840862/ /pubmed/33537487 http://dx.doi.org/10.1016/j.heliyon.2021.e06062 Text en © 2021 Published by Elsevier Ltd. http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Research Article
Nabieh, Kareem A.
Mortada, Wael I.
Helmy, Tamer E.
Kenawy, Ibrahim M.M.
Abou El-Reash, Yasmeen G.
Chemically modified rice husk as an effective adsorbent for removal of palladium ions
title Chemically modified rice husk as an effective adsorbent for removal of palladium ions
title_full Chemically modified rice husk as an effective adsorbent for removal of palladium ions
title_fullStr Chemically modified rice husk as an effective adsorbent for removal of palladium ions
title_full_unstemmed Chemically modified rice husk as an effective adsorbent for removal of palladium ions
title_short Chemically modified rice husk as an effective adsorbent for removal of palladium ions
title_sort chemically modified rice husk as an effective adsorbent for removal of palladium ions
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7840862/
https://www.ncbi.nlm.nih.gov/pubmed/33537487
http://dx.doi.org/10.1016/j.heliyon.2021.e06062
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