Comparison of Phenol Adsorption Property and Mechanism onto Different Moroccan Clays
This study focuses on the removal of phenol from aqueous media using Agouraï clay (Fes-Meknes-Morocco region) and Geulmima clay (Draa Tafilalet region). The characterization of the clay by Fourier Transform Infrared (FTIR) Spectroscopy, X-ray diffraction (XRD), N2 adsorption (BET), Scanning Electron...
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MDPI AG
2023-05-01
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| Online Access: | https://www.mdpi.com/2073-4441/15/10/1881 |
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| author | Younes Dehmani Dison S. P. Franco Jordana Georgin Taibi Lamhasni Younes Brahmi Rachid Oukhrib Belfaquir Mustapha Hamou Moussout Hassan Ouallal Abouarnadasse Sadik |
| author_facet | Younes Dehmani Dison S. P. Franco Jordana Georgin Taibi Lamhasni Younes Brahmi Rachid Oukhrib Belfaquir Mustapha Hamou Moussout Hassan Ouallal Abouarnadasse Sadik |
| author_sort | Younes Dehmani |
| collection | DOAJ |
| description | This study focuses on the removal of phenol from aqueous media using Agouraï clay (Fes-Meknes-Morocco region) and Geulmima clay (Draa Tafilalet region). The characterization of the clay by Fourier Transform Infrared (FTIR) Spectroscopy, X-ray diffraction (XRD), N2 adsorption (BET), Scanning Electron Microscopy (SEM), and Thermogravimetric and differential thermal analysis (DTA/GTA) indicates that it is mainly composed of quartz, kaolinite, and illite. The results showed that raw Clay Agourai (RCA) and raw Clay Geulmima (RCG) adsorbed phenol very quickly and reached equilibrium after 30 min. Thermodynamic parameters reveal the physical nature of the adsorption, the spontaneity, and the sequence of the process. However, the structure and structural characterization of the solid before and after phenol adsorption indicated that the mechanism of the reaction was electrostatic and that hydrogen bonding played an important role in RCG, while kinetic modeling showed the pseudo-second-order model dynamics. The physics-statistics modeling was employed for describing the isotherm adsorption for both systems. It was found that the monolayer model with two different energy sites best describes adsorption irrespective of the system. The model indicates that the receptor density of each clay direct influences the adsorption capacity, demonstrating that the composition of the clay is the main source of the difference. Thermodynamic simulations have shown that the adsorption of phenol is spontaneous and endothermic, irrespective of the system. In addition, thermodynamic simulations show that the RCG could be adsorbed even further since the equilibrium was not achieved for any thermodynamic variable. The strength of this study lies in the determination of the adsorption mechanism of phenol on clay materials and the optimum values of temperature and pH. |
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| format | Article |
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| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-11T03:13:15Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-365a2600923c4fca86da521f4bd205782023-11-18T03:41:48ZengMDPI AGWater2073-44412023-05-011510188110.3390/w15101881Comparison of Phenol Adsorption Property and Mechanism onto Different Moroccan ClaysYounes Dehmani0Dison S. P. Franco1Jordana Georgin2Taibi Lamhasni3Younes Brahmi4Rachid Oukhrib5Belfaquir Mustapha6Hamou Moussout7Hassan Ouallal8Abouarnadasse Sadik9Laboratory of Chemistry and Biology Applied to the Environment, Faculty of Sciences of Meknes, Moulay Ismail University, Meknes 50050, MoroccoDepartment of Civil and Environmental, Universidad de la Costa, CUC, Calle 58 #55-66, Barranquilla 50366, ColombiaDepartment of Civil and Environmental, Universidad de la Costa, CUC, Calle 58 #55-66, Barranquilla 50366, ColombiaInstitut National des Sciences de l’Archéologie et du Patrimoine (INSAP), BP 6828, Madinat al Irfane, Avenue Allal El Fassi, Angle rues 5 et 7, Rabat-Instituts, Rabat 10000, MoroccoHTMR-Lab, Mohammed VI Polytechnic University (UM6P), Benguerir 43150, MoroccoTeam of Physical Chemistry and Environment, Faculty of Sciences, IBN ZOHR University, Agadir 80000, MoroccoLaboratory of Advanced Materials and Process Engineering, Faculty of Sciences, University Ibn Tofail, PB: 133, Kenitra 14000, MoroccoLaboratory of Advanced Materials and Process Engineering, Faculty of Sciences, University Ibn Tofail, PB: 133, Kenitra 14000, MoroccoLaboratory of Physic-Chemistry Materials, Faculty of Sciences and Techniques, Department of Chemistry Fundamental and Applied, Moulay Ismaïl University, PO Bosc 509, Errachidia 52000, MoroccoLaboratory of Chemistry and Biology Applied to the Environment, Faculty of Sciences of Meknes, Moulay Ismail University, Meknes 50050, MoroccoThis study focuses on the removal of phenol from aqueous media using Agouraï clay (Fes-Meknes-Morocco region) and Geulmima clay (Draa Tafilalet region). The characterization of the clay by Fourier Transform Infrared (FTIR) Spectroscopy, X-ray diffraction (XRD), N2 adsorption (BET), Scanning Electron Microscopy (SEM), and Thermogravimetric and differential thermal analysis (DTA/GTA) indicates that it is mainly composed of quartz, kaolinite, and illite. The results showed that raw Clay Agourai (RCA) and raw Clay Geulmima (RCG) adsorbed phenol very quickly and reached equilibrium after 30 min. Thermodynamic parameters reveal the physical nature of the adsorption, the spontaneity, and the sequence of the process. However, the structure and structural characterization of the solid before and after phenol adsorption indicated that the mechanism of the reaction was electrostatic and that hydrogen bonding played an important role in RCG, while kinetic modeling showed the pseudo-second-order model dynamics. The physics-statistics modeling was employed for describing the isotherm adsorption for both systems. It was found that the monolayer model with two different energy sites best describes adsorption irrespective of the system. The model indicates that the receptor density of each clay direct influences the adsorption capacity, demonstrating that the composition of the clay is the main source of the difference. Thermodynamic simulations have shown that the adsorption of phenol is spontaneous and endothermic, irrespective of the system. In addition, thermodynamic simulations show that the RCG could be adsorbed even further since the equilibrium was not achieved for any thermodynamic variable. The strength of this study lies in the determination of the adsorption mechanism of phenol on clay materials and the optimum values of temperature and pH.https://www.mdpi.com/2073-4441/15/10/1881phenol adsorptiondifferent claysadsorption mechanismphysics-statistics modeling |
| spellingShingle | Younes Dehmani Dison S. P. Franco Jordana Georgin Taibi Lamhasni Younes Brahmi Rachid Oukhrib Belfaquir Mustapha Hamou Moussout Hassan Ouallal Abouarnadasse Sadik Comparison of Phenol Adsorption Property and Mechanism onto Different Moroccan Clays Water phenol adsorption different clays adsorption mechanism physics-statistics modeling |
| title | Comparison of Phenol Adsorption Property and Mechanism onto Different Moroccan Clays |
| title_full | Comparison of Phenol Adsorption Property and Mechanism onto Different Moroccan Clays |
| title_fullStr | Comparison of Phenol Adsorption Property and Mechanism onto Different Moroccan Clays |
| title_full_unstemmed | Comparison of Phenol Adsorption Property and Mechanism onto Different Moroccan Clays |
| title_short | Comparison of Phenol Adsorption Property and Mechanism onto Different Moroccan Clays |
| title_sort | comparison of phenol adsorption property and mechanism onto different moroccan clays |
| topic | phenol adsorption different clays adsorption mechanism physics-statistics modeling |
| url | https://www.mdpi.com/2073-4441/15/10/1881 |
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