Preparation of Alumina-Sphere-Supported Potassium Chabazite Zeolite Membrane with Excellent Potassium Extraction Performance at Room Temperature
In this paper, a potassium chabazite (KCHA) zeolite membrane was prepared by coating KCHA zeolite on the surface of a porous alumina sphere. The performance of the KCHA zeolite membrane in extracting potassium from seawater and sea bittern at room temperature was studied in detail. The XRD results s...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-06-01
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| Series: | Membranes |
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| Online Access: | https://www.mdpi.com/2077-0375/12/6/604 |
| _version_ | 1827658562091876352 |
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| author | Jie Ouyang Heng Wei Jin Hou |
| author_facet | Jie Ouyang Heng Wei Jin Hou |
| author_sort | Jie Ouyang |
| collection | DOAJ |
| description | In this paper, a potassium chabazite (KCHA) zeolite membrane was prepared by coating KCHA zeolite on the surface of a porous alumina sphere. The performance of the KCHA zeolite membrane in extracting potassium from seawater and sea bittern at room temperature was studied in detail. The XRD results show that the prepared KCHA zeolite was a KCHA membrane. The EDS test indicated that the potassium content of the KCHA zeolite membrane reached a value of 18.33 wt.%. The morphology of the KCHA zeolite grown on the surface of the alumina sphere was similar to a sphere, and it had good symmetry. The potassium ion-exchange capacities of the KCHA zeolite membrane reached 32 mg/g in seawater and 77 mg/g in sea bittern at room temperature. Ion exchange between the ammonium ions and potassium ions in the KCHA zeolite membrane could be completed in a short time at room temperature. The KCHA zeolite membrane was proven to have good reusability in seawater and sea bittern. The selective ion-exchange mechanism of the KCHA zeolite membrane was controlled by a specific K<sup>+</sup> ion memory. |
| first_indexed | 2024-03-09T23:05:26Z |
| format | Article |
| id | doaj.art-ee2b975d2c224f1ca5f838d3d3d0fa0d |
| institution | Directory Open Access Journal |
| issn | 2077-0375 |
| language | English |
| last_indexed | 2024-03-09T23:05:26Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Membranes |
| spelling | doaj.art-ee2b975d2c224f1ca5f838d3d3d0fa0d2023-11-23T17:54:40ZengMDPI AGMembranes2077-03752022-06-0112660410.3390/membranes12060604Preparation of Alumina-Sphere-Supported Potassium Chabazite Zeolite Membrane with Excellent Potassium Extraction Performance at Room TemperatureJie Ouyang0Heng Wei1Jin Hou2College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, ChinaCollege of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, ChinaCollege of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, ChinaIn this paper, a potassium chabazite (KCHA) zeolite membrane was prepared by coating KCHA zeolite on the surface of a porous alumina sphere. The performance of the KCHA zeolite membrane in extracting potassium from seawater and sea bittern at room temperature was studied in detail. The XRD results show that the prepared KCHA zeolite was a KCHA membrane. The EDS test indicated that the potassium content of the KCHA zeolite membrane reached a value of 18.33 wt.%. The morphology of the KCHA zeolite grown on the surface of the alumina sphere was similar to a sphere, and it had good symmetry. The potassium ion-exchange capacities of the KCHA zeolite membrane reached 32 mg/g in seawater and 77 mg/g in sea bittern at room temperature. Ion exchange between the ammonium ions and potassium ions in the KCHA zeolite membrane could be completed in a short time at room temperature. The KCHA zeolite membrane was proven to have good reusability in seawater and sea bittern. The selective ion-exchange mechanism of the KCHA zeolite membrane was controlled by a specific K<sup>+</sup> ion memory.https://www.mdpi.com/2077-0375/12/6/604KCHA zeolite membranepotassium extractionseawatersea bittern |
| spellingShingle | Jie Ouyang Heng Wei Jin Hou Preparation of Alumina-Sphere-Supported Potassium Chabazite Zeolite Membrane with Excellent Potassium Extraction Performance at Room Temperature Membranes KCHA zeolite membrane potassium extraction seawater sea bittern |
| title | Preparation of Alumina-Sphere-Supported Potassium Chabazite Zeolite Membrane with Excellent Potassium Extraction Performance at Room Temperature |
| title_full | Preparation of Alumina-Sphere-Supported Potassium Chabazite Zeolite Membrane with Excellent Potassium Extraction Performance at Room Temperature |
| title_fullStr | Preparation of Alumina-Sphere-Supported Potassium Chabazite Zeolite Membrane with Excellent Potassium Extraction Performance at Room Temperature |
| title_full_unstemmed | Preparation of Alumina-Sphere-Supported Potassium Chabazite Zeolite Membrane with Excellent Potassium Extraction Performance at Room Temperature |
| title_short | Preparation of Alumina-Sphere-Supported Potassium Chabazite Zeolite Membrane with Excellent Potassium Extraction Performance at Room Temperature |
| title_sort | preparation of alumina sphere supported potassium chabazite zeolite membrane with excellent potassium extraction performance at room temperature |
| topic | KCHA zeolite membrane potassium extraction seawater sea bittern |
| url | https://www.mdpi.com/2077-0375/12/6/604 |
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