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Synthesis, Characterization, Kinetics, and Thermodynamics of EDTA-Modified Chitosan-Carboxymethyl Cellulose as Cu(II) Ion Adsorbent
[Image: see text] A new adsorbent derived from the naturally occurring biopolymers, chitosan (CS) and carboxymethyl cellulose (CMC) was prepared by cross-linking them using EDTA. EDTA having high affinity for metal ions can be used to enhance the chelation properties of the adsorbent enormously. The...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
American Chemical Society
2019
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Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6812121/ https://www.ncbi.nlm.nih.gov/pubmed/31656915 http://dx.doi.org/10.1021/acsomega.9b02214 |
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author | Manzoor, Kaiser Ahmad, Mudasir Ahmad, Suhail Ikram, Saiqa |
author_facet | Manzoor, Kaiser Ahmad, Mudasir Ahmad, Suhail Ikram, Saiqa |
author_sort | Manzoor, Kaiser |
collection | PubMed |
description | [Image: see text] A new adsorbent derived from the naturally occurring biopolymers, chitosan (CS) and carboxymethyl cellulose (CMC) was prepared by cross-linking them using EDTA. EDTA having high affinity for metal ions can be used to enhance the chelation properties of the adsorbent enormously. The product obtained (chitosan-EDTA-CMC, CSECM) was characterized by different techniques: FTIR, XRD, SEM/EDAX, TGA, and XPS. The parameters for evaluation of the adsorption properties for removal of Cu(II) ions from the aqueous solution were determined using the batch adsorption method by studying the effect of pH, contact time, initial ion concentration, and temperature on adsorption. Pseudo-first-order, pseudo-second-order, and intraparticle diffusion kinetic models were applied to study the kinetics of the adsorption process, whereas Langmuir, Freundlich, Temkin, and D-R models were applied to evaluate the thermodynamics of the adsorption process. The kinetic adsorption parameters were in best agreement with the pseudo-second-order model, while thermodynamic parameters best fitted to the Langmuir isotherm at different temperatures for adsorption of Cu(II) ions from aqueous solution with a maximum adsorption capacity of 142.95 mg/g at pH 5.5. CSECM showed excellent regeneration capability and recovery of the Cu(II) ion up to five cycles without the loss of the adsorption efficiency, which is the best characteristic to select the appropriate choice of the adsorbent. The adsorbent was also employed in batch experiments to evaluate the adsorption of hardness, producing common metal ions in single and real wastewater solutions. |
format | Online Article Text |
id | pubmed-6812121 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | American Chemical Society |
record_format | MEDLINE/PubMed |
spelling | pubmed-68121212019-10-25 Synthesis, Characterization, Kinetics, and Thermodynamics of EDTA-Modified Chitosan-Carboxymethyl Cellulose as Cu(II) Ion Adsorbent Manzoor, Kaiser Ahmad, Mudasir Ahmad, Suhail Ikram, Saiqa ACS Omega [Image: see text] A new adsorbent derived from the naturally occurring biopolymers, chitosan (CS) and carboxymethyl cellulose (CMC) was prepared by cross-linking them using EDTA. EDTA having high affinity for metal ions can be used to enhance the chelation properties of the adsorbent enormously. The product obtained (chitosan-EDTA-CMC, CSECM) was characterized by different techniques: FTIR, XRD, SEM/EDAX, TGA, and XPS. The parameters for evaluation of the adsorption properties for removal of Cu(II) ions from the aqueous solution were determined using the batch adsorption method by studying the effect of pH, contact time, initial ion concentration, and temperature on adsorption. Pseudo-first-order, pseudo-second-order, and intraparticle diffusion kinetic models were applied to study the kinetics of the adsorption process, whereas Langmuir, Freundlich, Temkin, and D-R models were applied to evaluate the thermodynamics of the adsorption process. The kinetic adsorption parameters were in best agreement with the pseudo-second-order model, while thermodynamic parameters best fitted to the Langmuir isotherm at different temperatures for adsorption of Cu(II) ions from aqueous solution with a maximum adsorption capacity of 142.95 mg/g at pH 5.5. CSECM showed excellent regeneration capability and recovery of the Cu(II) ion up to five cycles without the loss of the adsorption efficiency, which is the best characteristic to select the appropriate choice of the adsorbent. The adsorbent was also employed in batch experiments to evaluate the adsorption of hardness, producing common metal ions in single and real wastewater solutions. American Chemical Society 2019-10-07 /pmc/articles/PMC6812121/ /pubmed/31656915 http://dx.doi.org/10.1021/acsomega.9b02214 Text en Copyright © 2019 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes. |
spellingShingle | Manzoor, Kaiser Ahmad, Mudasir Ahmad, Suhail Ikram, Saiqa Synthesis, Characterization, Kinetics, and Thermodynamics of EDTA-Modified Chitosan-Carboxymethyl Cellulose as Cu(II) Ion Adsorbent |
title | Synthesis, Characterization, Kinetics, and Thermodynamics
of EDTA-Modified Chitosan-Carboxymethyl Cellulose as Cu(II) Ion Adsorbent |
title_full | Synthesis, Characterization, Kinetics, and Thermodynamics
of EDTA-Modified Chitosan-Carboxymethyl Cellulose as Cu(II) Ion Adsorbent |
title_fullStr | Synthesis, Characterization, Kinetics, and Thermodynamics
of EDTA-Modified Chitosan-Carboxymethyl Cellulose as Cu(II) Ion Adsorbent |
title_full_unstemmed | Synthesis, Characterization, Kinetics, and Thermodynamics
of EDTA-Modified Chitosan-Carboxymethyl Cellulose as Cu(II) Ion Adsorbent |
title_short | Synthesis, Characterization, Kinetics, and Thermodynamics
of EDTA-Modified Chitosan-Carboxymethyl Cellulose as Cu(II) Ion Adsorbent |
title_sort | synthesis, characterization, kinetics, and thermodynamics
of edta-modified chitosan-carboxymethyl cellulose as cu(ii) ion adsorbent |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6812121/ https://www.ncbi.nlm.nih.gov/pubmed/31656915 http://dx.doi.org/10.1021/acsomega.9b02214 |
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