Al-Impregnated Granular Activated Carbon for Removal of Fluoride from Aqueous Solution: Batch and Fixed-Bed Column Study
Fluoride pollution in water has been reported in many regions and countries. Adsorption is the most commonly used process for treating fluoride-containing water. For industrial applications, the treatment of a pollutant is normally performed in continuous column mode. In this work, batch and lab-sca...
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MDPI AG
2022-11-01
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| Series: | Water |
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| Online Access: | https://www.mdpi.com/2073-4441/14/21/3554 |
| _version_ | 1797466179340599296 |
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| author | Zheng Liu Sijie Zheng Daolong Zhang |
| author_facet | Zheng Liu Sijie Zheng Daolong Zhang |
| author_sort | Zheng Liu |
| collection | DOAJ |
| description | Fluoride pollution in water has been reported in many regions and countries. Adsorption is the most commonly used process for treating fluoride-containing water. For industrial applications, the treatment of a pollutant is normally performed in continuous column mode. In this work, batch and lab-scale column studies were conducted by applying modified granular activated carbon (MGAC) to remove fluoride (F<sup>−</sup>) from an aqueous solution. MGAC was prepared by a wet impregnation method and characterized using SEM and FTIR. Batch studies presented the adsorption of F<sup>−</sup> onto MGAC following the Freundlich model and the pseudo-second-order model, indicating the dominant adsorption was a multilayer adsorption and chemisorption process. The breakthrough time, exhaustion time, adsorption capacity, and adsorption efficiency in breakthrough curves were evaluated under varying influent F<sup>−</sup> concentrations, flow rates, and bed heights. Thomas, Yoon-Nelson, and Yan models were employed to describe the whole breakthrough behavior, showing their suitability to predict the features of the breakthrough curves of the MGAC continuous flow system. |
| first_indexed | 2024-03-09T18:33:08Z |
| format | Article |
| id | doaj.art-536d18b1e9d34c81a643f0c08e0536e9 |
| institution | Directory Open Access Journal |
| issn | 2073-4441 |
| language | English |
| last_indexed | 2024-03-09T18:33:08Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Water |
| spelling | doaj.art-536d18b1e9d34c81a643f0c08e0536e92023-11-24T07:21:19ZengMDPI AGWater2073-44412022-11-011421355410.3390/w14213554Al-Impregnated Granular Activated Carbon for Removal of Fluoride from Aqueous Solution: Batch and Fixed-Bed Column StudyZheng Liu0Sijie Zheng1Daolong Zhang2School of Environmental Science and Engineering, Xiamen University of Technology, Xiamen 361000, ChinaSchool of Environmental Science and Engineering, Xiamen University of Technology, Xiamen 361000, ChinaSchool of Environmental Science and Engineering, Xiamen University of Technology, Xiamen 361000, ChinaFluoride pollution in water has been reported in many regions and countries. Adsorption is the most commonly used process for treating fluoride-containing water. For industrial applications, the treatment of a pollutant is normally performed in continuous column mode. In this work, batch and lab-scale column studies were conducted by applying modified granular activated carbon (MGAC) to remove fluoride (F<sup>−</sup>) from an aqueous solution. MGAC was prepared by a wet impregnation method and characterized using SEM and FTIR. Batch studies presented the adsorption of F<sup>−</sup> onto MGAC following the Freundlich model and the pseudo-second-order model, indicating the dominant adsorption was a multilayer adsorption and chemisorption process. The breakthrough time, exhaustion time, adsorption capacity, and adsorption efficiency in breakthrough curves were evaluated under varying influent F<sup>−</sup> concentrations, flow rates, and bed heights. Thomas, Yoon-Nelson, and Yan models were employed to describe the whole breakthrough behavior, showing their suitability to predict the features of the breakthrough curves of the MGAC continuous flow system.https://www.mdpi.com/2073-4441/14/21/3554fixed-bed columnremoval of fluorideAlgranular activated carbonadsorption |
| spellingShingle | Zheng Liu Sijie Zheng Daolong Zhang Al-Impregnated Granular Activated Carbon for Removal of Fluoride from Aqueous Solution: Batch and Fixed-Bed Column Study Water fixed-bed column removal of fluoride Al granular activated carbon adsorption |
| title | Al-Impregnated Granular Activated Carbon for Removal of Fluoride from Aqueous Solution: Batch and Fixed-Bed Column Study |
| title_full | Al-Impregnated Granular Activated Carbon for Removal of Fluoride from Aqueous Solution: Batch and Fixed-Bed Column Study |
| title_fullStr | Al-Impregnated Granular Activated Carbon for Removal of Fluoride from Aqueous Solution: Batch and Fixed-Bed Column Study |
| title_full_unstemmed | Al-Impregnated Granular Activated Carbon for Removal of Fluoride from Aqueous Solution: Batch and Fixed-Bed Column Study |
| title_short | Al-Impregnated Granular Activated Carbon for Removal of Fluoride from Aqueous Solution: Batch and Fixed-Bed Column Study |
| title_sort | al impregnated granular activated carbon for removal of fluoride from aqueous solution batch and fixed bed column study |
| topic | fixed-bed column removal of fluoride Al granular activated carbon adsorption |
| url | https://www.mdpi.com/2073-4441/14/21/3554 |
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