Silicic Acid Removal by Metal-Organic Frameworks for Silica-Scale Mitigation in Reverse Osmosis
Reverse osmosis (RO) membranes are susceptible to silica scaling, resulting in irreversible degradation of membrane performance. This work covered the fabrication of MIL-101(Fe) for silicic acid adsorption to alleviate the silica scaling of RO membranes. The effect of pH, mixing time and initial con...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Membranes |
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| Online Access: | https://www.mdpi.com/2077-0375/13/1/78 |
| _version_ | 1827623315525599232 |
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| author | Rui Guo Jun Zhang Taona Nashel Mufanebadza Xinxia Tian Lixin Xie Song Zhao |
| author_facet | Rui Guo Jun Zhang Taona Nashel Mufanebadza Xinxia Tian Lixin Xie Song Zhao |
| author_sort | Rui Guo |
| collection | DOAJ |
| description | Reverse osmosis (RO) membranes are susceptible to silica scaling, resulting in irreversible degradation of membrane performance. This work covered the fabrication of MIL-101(Fe) for silicic acid adsorption to alleviate the silica scaling of RO membranes. The effect of pH, mixing time and initial concentration on silicic acid adsorption of MIL-101(Fe) was appraised in detail. The adsorption experiments demonstrated that MIL-101(Fe) possessed an excellent adsorption ability for silicic acid with the maximum adsorption capacity reaching 220.1 mgSiO<sub>2</sub>·g<sup>−1</sup>. Data fitting confirmed the pseudo-second-order equation and Freundlich equation were consistent with silicic acid adsorption on MIL-101(Fe). Finally, a simulated anti-scaling experiment was carried out using a feed solution pretreated by MIL-101(Fe) adsorption, and the permeance exhibited a much lower decline after 24 h filtration, confirming that MIL-101(Fe) exhibits an excellent application potential for silica-scale mitigation in RO systems. |
| first_indexed | 2024-03-09T11:43:58Z |
| format | Article |
| id | doaj.art-e6eda3c3679e4b79870ddafb0a542b56 |
| institution | Directory Open Access Journal |
| issn | 2077-0375 |
| language | English |
| last_indexed | 2024-03-09T11:43:58Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj.art-e6eda3c3679e4b79870ddafb0a542b562023-11-30T23:26:54ZengMDPI AGMembranes2077-03752023-01-011317810.3390/membranes13010078Silicic Acid Removal by Metal-Organic Frameworks for Silica-Scale Mitigation in Reverse OsmosisRui Guo0Jun Zhang1Taona Nashel Mufanebadza2Xinxia Tian3Lixin Xie4Song Zhao5Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, ChinaChemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, ChinaChemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, ChinaInstitute of Seawater Desalination and Multipurpose Utilization, MNR (Tianjin), Tianjin 300192, ChinaChemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, ChinaChemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, ChinaReverse osmosis (RO) membranes are susceptible to silica scaling, resulting in irreversible degradation of membrane performance. This work covered the fabrication of MIL-101(Fe) for silicic acid adsorption to alleviate the silica scaling of RO membranes. The effect of pH, mixing time and initial concentration on silicic acid adsorption of MIL-101(Fe) was appraised in detail. The adsorption experiments demonstrated that MIL-101(Fe) possessed an excellent adsorption ability for silicic acid with the maximum adsorption capacity reaching 220.1 mgSiO<sub>2</sub>·g<sup>−1</sup>. Data fitting confirmed the pseudo-second-order equation and Freundlich equation were consistent with silicic acid adsorption on MIL-101(Fe). Finally, a simulated anti-scaling experiment was carried out using a feed solution pretreated by MIL-101(Fe) adsorption, and the permeance exhibited a much lower decline after 24 h filtration, confirming that MIL-101(Fe) exhibits an excellent application potential for silica-scale mitigation in RO systems.https://www.mdpi.com/2077-0375/13/1/78MIL-101(Fe) MOFadsorptionreverse osmosispretreatmentsilicic acid removal |
| spellingShingle | Rui Guo Jun Zhang Taona Nashel Mufanebadza Xinxia Tian Lixin Xie Song Zhao Silicic Acid Removal by Metal-Organic Frameworks for Silica-Scale Mitigation in Reverse Osmosis Membranes MIL-101(Fe) MOF adsorption reverse osmosis pretreatment silicic acid removal |
| title | Silicic Acid Removal by Metal-Organic Frameworks for Silica-Scale Mitigation in Reverse Osmosis |
| title_full | Silicic Acid Removal by Metal-Organic Frameworks for Silica-Scale Mitigation in Reverse Osmosis |
| title_fullStr | Silicic Acid Removal by Metal-Organic Frameworks for Silica-Scale Mitigation in Reverse Osmosis |
| title_full_unstemmed | Silicic Acid Removal by Metal-Organic Frameworks for Silica-Scale Mitigation in Reverse Osmosis |
| title_short | Silicic Acid Removal by Metal-Organic Frameworks for Silica-Scale Mitigation in Reverse Osmosis |
| title_sort | silicic acid removal by metal organic frameworks for silica scale mitigation in reverse osmosis |
| topic | MIL-101(Fe) MOF adsorption reverse osmosis pretreatment silicic acid removal |
| url | https://www.mdpi.com/2077-0375/13/1/78 |
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