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Insight into the synergetic, steric and energetic properties of zeolitization and cellulose fiber functionalization of diatomite during the adsorption of Cd(ii): advanced equilibrium studies

The adsorption potentiality of zeolitized diatomite (ZD) frustules and their cellulose hybridized (C/ZD) product for Cd(ii) ions was assessed in synergetic studies to investigate the impact of the modification processes. The adsorption properties were illustrated based on the steric and energetic pa...

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Autores principales: Abukhadra, Mostafa R., Saad, Islam, Al Othman, Sarah I., Alfassam, Haifa E., Allam, Ahmed A.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10405048/
https://www.ncbi.nlm.nih.gov/pubmed/37555098
http://dx.doi.org/10.1039/d3ra03939k
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author Abukhadra, Mostafa R.
Saad, Islam
Al Othman, Sarah I.
Alfassam, Haifa E.
Allam, Ahmed A.
author_facet Abukhadra, Mostafa R.
Saad, Islam
Al Othman, Sarah I.
Alfassam, Haifa E.
Allam, Ahmed A.
author_sort Abukhadra, Mostafa R.
collection PubMed
description The adsorption potentiality of zeolitized diatomite (ZD) frustules and their cellulose hybridized (C/ZD) product for Cd(ii) ions was assessed in synergetic studies to investigate the impact of the modification processes. The adsorption properties were illustrated based on the steric and energetic parameters of the applied advanced equilibrium modeling (monolayer model of one energy). The cellulose hybridization process increased the adsorption properties of Cd(ii) significantly to 229.4 mg g(−1) as compared to ZD (180.8 mg g(−1)) and raw diatomite (DA) (127.8 mg g(−1)) during the saturation state. The steric investigation suggested a notable increase in the quantities of the active sites after the zeolitization (N(m) = 62.37 mg g(−1)) and cellulose functionalization (N(m) = 98.46 mg g(−1)), which illustrates enhancement in the Cd(ii) uptake capacity of C/ZD. Moreover, each active site of C/ZD can absorb about 4 ions of Cd(ii) ZD, which occur in a vertical orientation. The energetic studies, including Gaussian energy (<8 kJ mol(−1)) and retention energy (<8 kJ mol(−1)), demonstrate the physical uptake of Cd(ii), which might involve cooperating van der Waals forces (4–10 kJ mol(−1)), hydrophobic bonds (5 kJ mol(−1)), dipole forces (2–29 kJ mol(−1)), and hydrogen bonding (<30 kJ mol(−1)) in addition to zeolitic ion exchange mechanisms (0.6–25 kJ mol(−1)). The behaviors and values of entropy, internal energy, and free enthalpy as the assessed thermodynamic functions validate the exothermic and spontaneous properties of the Cd(ii) retention by ZD and the C/ZD composite.
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spelling pubmed-104050482023-08-08 Insight into the synergetic, steric and energetic properties of zeolitization and cellulose fiber functionalization of diatomite during the adsorption of Cd(ii): advanced equilibrium studies Abukhadra, Mostafa R. Saad, Islam Al Othman, Sarah I. Alfassam, Haifa E. Allam, Ahmed A. RSC Adv Chemistry The adsorption potentiality of zeolitized diatomite (ZD) frustules and their cellulose hybridized (C/ZD) product for Cd(ii) ions was assessed in synergetic studies to investigate the impact of the modification processes. The adsorption properties were illustrated based on the steric and energetic parameters of the applied advanced equilibrium modeling (monolayer model of one energy). The cellulose hybridization process increased the adsorption properties of Cd(ii) significantly to 229.4 mg g(−1) as compared to ZD (180.8 mg g(−1)) and raw diatomite (DA) (127.8 mg g(−1)) during the saturation state. The steric investigation suggested a notable increase in the quantities of the active sites after the zeolitization (N(m) = 62.37 mg g(−1)) and cellulose functionalization (N(m) = 98.46 mg g(−1)), which illustrates enhancement in the Cd(ii) uptake capacity of C/ZD. Moreover, each active site of C/ZD can absorb about 4 ions of Cd(ii) ZD, which occur in a vertical orientation. The energetic studies, including Gaussian energy (<8 kJ mol(−1)) and retention energy (<8 kJ mol(−1)), demonstrate the physical uptake of Cd(ii), which might involve cooperating van der Waals forces (4–10 kJ mol(−1)), hydrophobic bonds (5 kJ mol(−1)), dipole forces (2–29 kJ mol(−1)), and hydrogen bonding (<30 kJ mol(−1)) in addition to zeolitic ion exchange mechanisms (0.6–25 kJ mol(−1)). The behaviors and values of entropy, internal energy, and free enthalpy as the assessed thermodynamic functions validate the exothermic and spontaneous properties of the Cd(ii) retention by ZD and the C/ZD composite. The Royal Society of Chemistry 2023-08-07 /pmc/articles/PMC10405048/ /pubmed/37555098 http://dx.doi.org/10.1039/d3ra03939k Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Abukhadra, Mostafa R.
Saad, Islam
Al Othman, Sarah I.
Alfassam, Haifa E.
Allam, Ahmed A.
Insight into the synergetic, steric and energetic properties of zeolitization and cellulose fiber functionalization of diatomite during the adsorption of Cd(ii): advanced equilibrium studies
title Insight into the synergetic, steric and energetic properties of zeolitization and cellulose fiber functionalization of diatomite during the adsorption of Cd(ii): advanced equilibrium studies
title_full Insight into the synergetic, steric and energetic properties of zeolitization and cellulose fiber functionalization of diatomite during the adsorption of Cd(ii): advanced equilibrium studies
title_fullStr Insight into the synergetic, steric and energetic properties of zeolitization and cellulose fiber functionalization of diatomite during the adsorption of Cd(ii): advanced equilibrium studies
title_full_unstemmed Insight into the synergetic, steric and energetic properties of zeolitization and cellulose fiber functionalization of diatomite during the adsorption of Cd(ii): advanced equilibrium studies
title_short Insight into the synergetic, steric and energetic properties of zeolitization and cellulose fiber functionalization of diatomite during the adsorption of Cd(ii): advanced equilibrium studies
title_sort insight into the synergetic, steric and energetic properties of zeolitization and cellulose fiber functionalization of diatomite during the adsorption of cd(ii): advanced equilibrium studies
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10405048/
https://www.ncbi.nlm.nih.gov/pubmed/37555098
http://dx.doi.org/10.1039/d3ra03939k
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