The High Performance of Multi-Metal Layered Double Hydroxides (LDHs) in the Removal of Organic Dyes
In this work, both MgNiAl-LDH and MgNiFe-LDH hydrotalcites were utilized to remove the anionic dye Congo red (CR) from an aqueous solution. Samples characterization was carried out by X-ray diffraction (XRD), infrared spectroscopy (IR) and Thermogravimetric/Differential Scanning Calorimetry (TG/DSC)...
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2023-11-01
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| author | Soumaya Talbi Amal El Khanchaoui Latifa Bouissane Abderrafia Hafid Mostafa Khouili Souad Rabi Abdellatif Essoumhi |
| author_facet | Soumaya Talbi Amal El Khanchaoui Latifa Bouissane Abderrafia Hafid Mostafa Khouili Souad Rabi Abdellatif Essoumhi |
| author_sort | Soumaya Talbi |
| collection | DOAJ |
| description | In this work, both MgNiAl-LDH and MgNiFe-LDH hydrotalcites were utilized to remove the anionic dye Congo red (CR) from an aqueous solution. Samples characterization was carried out by X-ray diffraction (XRD), infrared spectroscopy (IR) and Thermogravimetric/Differential Scanning Calorimetry (TG/DSC). Various parameters were investigated, including the initial dye concentration, adsorbent mass, contact time, solution pH, and temperature. Using classical pseudo-first-order, pseudo-second-order, and intraparticle diffusion models, adsorption kinetics were investigated. The dynamical data fit well with the pseudo-second order kinetic model. The equilibrium adsorption data were analyzed using three linear adsorption models: Langmuir, Freundlich, and Temkin. The findings showed that the Langmuir isotherm adequately predicts experimental results with an ideal correlation coefficient. The isothermal Langmuir model revealed a maximum adsorption capacity of q<sub>max</sub> of 5548 mg/g for the MgNiFe-LDH and of 4043 mg/g for MgNiAl-LDH. This result is very useful when selecting sorbents to improve removal technology in the aquatic environment. |
| format | Article |
| id | doaj-art-e37a58b52f81474a9f193b493f4f5e9b |
| institution | Kabale University |
| issn | 2673-4583 |
| language | English |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Chemistry Proceedings |
| spelling | doaj-art-e37a58b52f81474a9f193b493f4f5e9b2024-12-27T14:17:34ZengMDPI AGChemistry Proceedings2673-45832023-11-011419910.3390/ecsoc-27-16042The High Performance of Multi-Metal Layered Double Hydroxides (LDHs) in the Removal of Organic DyesSoumaya Talbi0Amal El Khanchaoui1Latifa Bouissane2Abderrafia Hafid3Mostafa Khouili4Souad Rabi5Abdellatif Essoumhi6Molecular Chemistry, Materials and Catalysis Laboratory, Faculty of Sciences and Technologies, Sultan Moulay Slimane University, BP 523, Beni-Mellal 23000, MoroccoChemicals Process and Applied Materials Laboratory, Polydisciplinary Faculty, Sultan Moulay Slimane University, BP 523, Beni-Mellal 23000, MoroccoMolecular Chemistry, Materials and Catalysis Laboratory, Faculty of Sciences and Technologies, Sultan Moulay Slimane University, BP 523, Beni-Mellal 23000, MoroccoMolecular Chemistry, Materials and Catalysis Laboratory, Faculty of Sciences and Technologies, Sultan Moulay Slimane University, BP 523, Beni-Mellal 23000, MoroccoMolecular Chemistry, Materials and Catalysis Laboratory, Faculty of Sciences and Technologies, Sultan Moulay Slimane University, BP 523, Beni-Mellal 23000, MoroccoMolecular Chemistry, Materials and Catalysis Laboratory, Faculty of Sciences and Technologies, Sultan Moulay Slimane University, BP 523, Beni-Mellal 23000, MoroccoChemicals Process and Applied Materials Laboratory, Polydisciplinary Faculty, Sultan Moulay Slimane University, BP 523, Beni-Mellal 23000, MoroccoIn this work, both MgNiAl-LDH and MgNiFe-LDH hydrotalcites were utilized to remove the anionic dye Congo red (CR) from an aqueous solution. Samples characterization was carried out by X-ray diffraction (XRD), infrared spectroscopy (IR) and Thermogravimetric/Differential Scanning Calorimetry (TG/DSC). Various parameters were investigated, including the initial dye concentration, adsorbent mass, contact time, solution pH, and temperature. Using classical pseudo-first-order, pseudo-second-order, and intraparticle diffusion models, adsorption kinetics were investigated. The dynamical data fit well with the pseudo-second order kinetic model. The equilibrium adsorption data were analyzed using three linear adsorption models: Langmuir, Freundlich, and Temkin. The findings showed that the Langmuir isotherm adequately predicts experimental results with an ideal correlation coefficient. The isothermal Langmuir model revealed a maximum adsorption capacity of q<sub>max</sub> of 5548 mg/g for the MgNiFe-LDH and of 4043 mg/g for MgNiAl-LDH. This result is very useful when selecting sorbents to improve removal technology in the aquatic environment.https://www.mdpi.com/2673-4583/14/1/99layered double hydroxideadsorptionanionic dyeCongo redkineticsisotherms |
| spellingShingle | Soumaya Talbi Amal El Khanchaoui Latifa Bouissane Abderrafia Hafid Mostafa Khouili Souad Rabi Abdellatif Essoumhi The High Performance of Multi-Metal Layered Double Hydroxides (LDHs) in the Removal of Organic Dyes Chemistry Proceedings layered double hydroxide adsorption anionic dye Congo red kinetics isotherms |
| title | The High Performance of Multi-Metal Layered Double Hydroxides (LDHs) in the Removal of Organic Dyes |
| title_full | The High Performance of Multi-Metal Layered Double Hydroxides (LDHs) in the Removal of Organic Dyes |
| title_fullStr | The High Performance of Multi-Metal Layered Double Hydroxides (LDHs) in the Removal of Organic Dyes |
| title_full_unstemmed | The High Performance of Multi-Metal Layered Double Hydroxides (LDHs) in the Removal of Organic Dyes |
| title_short | The High Performance of Multi-Metal Layered Double Hydroxides (LDHs) in the Removal of Organic Dyes |
| title_sort | high performance of multi metal layered double hydroxides ldhs in the removal of organic dyes |
| topic | layered double hydroxide adsorption anionic dye Congo red kinetics isotherms |
| url | https://www.mdpi.com/2673-4583/14/1/99 |
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