Cargando…

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...

Descripción completa

Detalles Bibliográficos
Autores principales: Manzoor, Kaiser, Ahmad, Mudasir, Ahmad, Suhail, Ikram, Saiqa
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2019
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
_version_ 1783462601541287936
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
work_keys_str_mv AT manzoorkaiser synthesischaracterizationkineticsandthermodynamicsofedtamodifiedchitosancarboxymethylcelluloseascuiiionadsorbent
AT ahmadmudasir synthesischaracterizationkineticsandthermodynamicsofedtamodifiedchitosancarboxymethylcelluloseascuiiionadsorbent
AT ahmadsuhail synthesischaracterizationkineticsandthermodynamicsofedtamodifiedchitosancarboxymethylcelluloseascuiiionadsorbent
AT ikramsaiqa synthesischaracterizationkineticsandthermodynamicsofedtamodifiedchitosancarboxymethylcelluloseascuiiionadsorbent