Removal and adsorption kinetics of copper(II) ions from aqueous media on activated carbon in dynamic adsorption on a fixed-bed column
Dynamic adsorption experiments on fixed-bed columns and adsorption kinetics studies of Cu2+ in aqueous media, under various experimental conditions, were carried out on activated carbon (AC) prepared using coconut shells from Franceville (Gabon). Results of dynamic adsorption experiments showed that...
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Académie des sciences
2024-06-01
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| Series: | Comptes Rendus. Chimie |
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| Online Access: | https://comptes-rendus.academie-sciences.fr/chimie/articles/10.5802/crchim.285/ |
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| author | Mve Mfoumou, Charly Tonda-Mikiéla, Pradel Ngoye, Francis Bouassa Mougnala, Spenseur Mbouiti, Berthy Lionel Feuya Tchouya, Guy Raymond |
| author_facet | Mve Mfoumou, Charly Tonda-Mikiéla, Pradel Ngoye, Francis Bouassa Mougnala, Spenseur Mbouiti, Berthy Lionel Feuya Tchouya, Guy Raymond |
| author_sort | Mve Mfoumou, Charly |
| collection | DOAJ |
| description | Dynamic adsorption experiments on fixed-bed columns and adsorption kinetics studies of Cu2+ in aqueous media, under various experimental conditions, were carried out on activated carbon (AC) prepared using coconut shells from Franceville (Gabon). Results of dynamic adsorption experiments showed that particle size (x) of the column bed, flow rate (D) and bed height (h) influence adsorption capacities at saturation (Qsat) and removal percentages (E) of Cu2+ on the prepared AC. The best Qsat and E (52.52 mg/g and 55.02%, respectively) were obtained with 0.01 < x < 0.04 mm, D = 2 mL/min, and h = 3 cm, with Cu2+ concentration and pH constant at 250 mg/L and 6.5, respectively. The adsorption kinetic studies indicated that the Thomas model and pseudo-first-order kinetic model best describe the adsorption mechanisms of Cu2+ in our experimental conditions. On the other hand, in addition to reversible interactions (physisorption), it appeared that irreversible reactions (chemisorption) also took place on the surface of the adsorbent. Results obtained from the intraparticle kinetics model study indicated that intraparticle diffusion is not the limiting step in Cu2+ adsorption and that surface adsorption plays a predominant role. |
| format | Article |
| id | doaj-art-8f0e7daf26a447728e63f16832c6fc3a |
| institution | Kabale University |
| issn | 1878-1543 |
| language | English |
| publishDate | 2024-06-01 |
| publisher | Académie des sciences |
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| series | Comptes Rendus. Chimie |
| spelling | doaj-art-8f0e7daf26a447728e63f16832c6fc3a2025-02-07T13:39:46ZengAcadémie des sciencesComptes Rendus. Chimie1878-15432024-06-0127G114115110.5802/crchim.28510.5802/crchim.285Removal and adsorption kinetics of copper(II) ions from aqueous media on activated carbon in dynamic adsorption on a fixed-bed columnMve Mfoumou, Charly0https://orcid.org/0000-0001-8393-9985Tonda-Mikiéla, Pradel1https://orcid.org/0009-0009-6133-8703Ngoye, Francis2Bouassa Mougnala, Spenseur3https://orcid.org/0009-0002-4562-8902Mbouiti, Berthy Lionel4https://orcid.org/0009-0007-1210-6549Feuya Tchouya, Guy Raymond5https://orcid.org/0000-0002-9264-086XDépartement de Chimie, Faculté des Sciences/Université des Sciences et Techniques de Masuku (USTM), BP : 943 Franceville, Gabon; Laboratoire de Chimie des Milieux et des Matériaux Inorganiques (LC2MI), URCHI/Université des Sciences et Techniques de Masuku (USTM), BP : 943 Franceville, GabonDépartement de Chimie, Faculté des Sciences/Université des Sciences et Techniques de Masuku (USTM), BP : 943 Franceville, Gabon; Laboratoire de Chimie des Milieux et des Matériaux Inorganiques (LC2MI), URCHI/Université des Sciences et Techniques de Masuku (USTM), BP : 943 Franceville, GabonLaboratoire de Chimie des Milieux et des Matériaux Inorganiques (LC2MI), URCHI/Université des Sciences et Techniques de Masuku (USTM), BP : 943 Franceville, GabonDépartement de Chimie, Faculté des Sciences/Université des Sciences et Techniques de Masuku (USTM), BP : 943 Franceville, Gabon; Laboratoire de Chimie des Milieux et des Matériaux Inorganiques (LC2MI), URCHI/Université des Sciences et Techniques de Masuku (USTM), BP : 943 Franceville, GabonDépartement de Chimie, Faculté des Sciences/Université des Sciences et Techniques de Masuku (USTM), BP : 943 Franceville, Gabon; Laboratoire de Chimie des Milieux et des Matériaux Inorganiques (LC2MI), URCHI/Université des Sciences et Techniques de Masuku (USTM), BP : 943 Franceville, GabonDépartement de Chimie, Faculté des Sciences/Université des Sciences et Techniques de Masuku (USTM), BP : 943 Franceville, Gabon; Laboratoire de Chimie des Milieux et des Matériaux Inorganiques (LC2MI), URCHI/Université des Sciences et Techniques de Masuku (USTM), BP : 943 Franceville, GabonDynamic adsorption experiments on fixed-bed columns and adsorption kinetics studies of Cu2+ in aqueous media, under various experimental conditions, were carried out on activated carbon (AC) prepared using coconut shells from Franceville (Gabon). Results of dynamic adsorption experiments showed that particle size (x) of the column bed, flow rate (D) and bed height (h) influence adsorption capacities at saturation (Qsat) and removal percentages (E) of Cu2+ on the prepared AC. The best Qsat and E (52.52 mg/g and 55.02%, respectively) were obtained with 0.01 < x < 0.04 mm, D = 2 mL/min, and h = 3 cm, with Cu2+ concentration and pH constant at 250 mg/L and 6.5, respectively. The adsorption kinetic studies indicated that the Thomas model and pseudo-first-order kinetic model best describe the adsorption mechanisms of Cu2+ in our experimental conditions. On the other hand, in addition to reversible interactions (physisorption), it appeared that irreversible reactions (chemisorption) also took place on the surface of the adsorbent. Results obtained from the intraparticle kinetics model study indicated that intraparticle diffusion is not the limiting step in Cu2+ adsorption and that surface adsorption plays a predominant role.https://comptes-rendus.academie-sciences.fr/chimie/articles/10.5802/crchim.285/Cu<sup>2+</sup>RemovalActivated carbonCoconut shellsDynamic adsorptionAdsorption kinetics |
| spellingShingle | Mve Mfoumou, Charly Tonda-Mikiéla, Pradel Ngoye, Francis Bouassa Mougnala, Spenseur Mbouiti, Berthy Lionel Feuya Tchouya, Guy Raymond Removal and adsorption kinetics of copper(II) ions from aqueous media on activated carbon in dynamic adsorption on a fixed-bed column Comptes Rendus. Chimie Cu<sup>2+</sup> Removal Activated carbon Coconut shells Dynamic adsorption Adsorption kinetics |
| title | Removal and adsorption kinetics of copper(II) ions from aqueous media on activated carbon in dynamic adsorption on a fixed-bed column |
| title_full | Removal and adsorption kinetics of copper(II) ions from aqueous media on activated carbon in dynamic adsorption on a fixed-bed column |
| title_fullStr | Removal and adsorption kinetics of copper(II) ions from aqueous media on activated carbon in dynamic adsorption on a fixed-bed column |
| title_full_unstemmed | Removal and adsorption kinetics of copper(II) ions from aqueous media on activated carbon in dynamic adsorption on a fixed-bed column |
| title_short | Removal and adsorption kinetics of copper(II) ions from aqueous media on activated carbon in dynamic adsorption on a fixed-bed column |
| title_sort | removal and adsorption kinetics of copper ii ions from aqueous media on activated carbon in dynamic adsorption on a fixed bed column |
| topic | Cu<sup>2+</sup> Removal Activated carbon Coconut shells Dynamic adsorption Adsorption kinetics |
| url | https://comptes-rendus.academie-sciences.fr/chimie/articles/10.5802/crchim.285/ |
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