Effective Removal of Sr<sup>2+</sup> Ions by K<sub>2</sub>SbPO<sub>6</sub>/Polyacrylonitrile Composite Microspheres
<sup>90</sup>Sr is one of the highly radioactive and hazardous nuclides in nuclear waste liquids. The high water solubility and mobility of <sup>90</sup>Sr<sup>2+</sup> ions make it difficult to effectively remove <sup>90</sup>Sr from the complex aqueo...
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2024-12-01
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| author | Shuangjiang Li Jianghai He Yanling Guo Lu Yang Haiyan Sun Meiling Feng Xiaoying Huang |
| author_facet | Shuangjiang Li Jianghai He Yanling Guo Lu Yang Haiyan Sun Meiling Feng Xiaoying Huang |
| author_sort | Shuangjiang Li |
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| description | <sup>90</sup>Sr is one of the highly radioactive and hazardous nuclides in nuclear waste liquids. The high water solubility and mobility of <sup>90</sup>Sr<sup>2+</sup> ions make it difficult to effectively remove <sup>90</sup>Sr from the complex aqueous environment. Herein, K<sub>2</sub>SbPO<sub>6</sub>, a phosphatoantimonate ion exchange material with an excellent removal ability for Sr<sup>2+</sup> ions, has been organically granulated with polyacrylonitrile (PAN) by an automated method to form K<sub>2</sub>SbPO<sub>6</sub>/PAN composite microspheres. The K<sub>2</sub>SbPO<sub>6</sub>/PAN microspheres with radiation resistance exhibit a high maximum adsorption capacity (<i>q</i><sub>m</sub><sup>Sr</sup>) of 131.15 mg g<sup>−1</sup> for Sr<sup>2+</sup> ions and retain the high removal rate (<i>R</i><sup>Sr</sup>) in a wide pH range (pH = 3–12). It is important that K<sub>2</sub>SbPO<sub>6</sub>/PAN microspheres could efficiently treat Sr<sup>2+</sup> ions solutions in a dynamic adsorption manner even at 970 bed volumes (<i>R</i><sup>Sr</sup> > 81%). This work paves the way for the preparation of low-cost ion exchange materials with the advantages of regular shape and easy operation by a simple and fast method and the practical application of powdered ion exchange materials. |
| format | Article |
| id | doaj-art-5b1c8c98aad7478794ef1ca4f5260b5a |
| institution | Kabale University |
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| language | English |
| publishDate | 2024-12-01 |
| publisher | MDPI AG |
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| spelling | doaj-art-5b1c8c98aad7478794ef1ca4f5260b5a2024-12-27T14:53:25ZengMDPI AGSeparations2297-87392024-12-01111234410.3390/separations11120344Effective Removal of Sr<sup>2+</sup> Ions by K<sub>2</sub>SbPO<sub>6</sub>/Polyacrylonitrile Composite MicrospheresShuangjiang Li0Jianghai He1Yanling Guo2Lu Yang3Haiyan Sun4Meiling Feng5Xiaoying Huang6College of Chemistry, Fuzhou University, Fuzhou 350116, ChinaCollege of Chemistry, Fuzhou University, Fuzhou 350116, ChinaState Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, ChinaState Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, ChinaState Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, ChinaCollege of Chemistry, Fuzhou University, Fuzhou 350116, ChinaState Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China<sup>90</sup>Sr is one of the highly radioactive and hazardous nuclides in nuclear waste liquids. The high water solubility and mobility of <sup>90</sup>Sr<sup>2+</sup> ions make it difficult to effectively remove <sup>90</sup>Sr from the complex aqueous environment. Herein, K<sub>2</sub>SbPO<sub>6</sub>, a phosphatoantimonate ion exchange material with an excellent removal ability for Sr<sup>2+</sup> ions, has been organically granulated with polyacrylonitrile (PAN) by an automated method to form K<sub>2</sub>SbPO<sub>6</sub>/PAN composite microspheres. The K<sub>2</sub>SbPO<sub>6</sub>/PAN microspheres with radiation resistance exhibit a high maximum adsorption capacity (<i>q</i><sub>m</sub><sup>Sr</sup>) of 131.15 mg g<sup>−1</sup> for Sr<sup>2+</sup> ions and retain the high removal rate (<i>R</i><sup>Sr</sup>) in a wide pH range (pH = 3–12). It is important that K<sub>2</sub>SbPO<sub>6</sub>/PAN microspheres could efficiently treat Sr<sup>2+</sup> ions solutions in a dynamic adsorption manner even at 970 bed volumes (<i>R</i><sup>Sr</sup> > 81%). This work paves the way for the preparation of low-cost ion exchange materials with the advantages of regular shape and easy operation by a simple and fast method and the practical application of powdered ion exchange materials.https://www.mdpi.com/2297-8739/11/12/344strontiumion exchangephosphatoantimonatepolyacrylonitrilecomposite microspheres |
| spellingShingle | Shuangjiang Li Jianghai He Yanling Guo Lu Yang Haiyan Sun Meiling Feng Xiaoying Huang Effective Removal of Sr<sup>2+</sup> Ions by K<sub>2</sub>SbPO<sub>6</sub>/Polyacrylonitrile Composite Microspheres Separations strontium ion exchange phosphatoantimonate polyacrylonitrile composite microspheres |
| title | Effective Removal of Sr<sup>2+</sup> Ions by K<sub>2</sub>SbPO<sub>6</sub>/Polyacrylonitrile Composite Microspheres |
| title_full | Effective Removal of Sr<sup>2+</sup> Ions by K<sub>2</sub>SbPO<sub>6</sub>/Polyacrylonitrile Composite Microspheres |
| title_fullStr | Effective Removal of Sr<sup>2+</sup> Ions by K<sub>2</sub>SbPO<sub>6</sub>/Polyacrylonitrile Composite Microspheres |
| title_full_unstemmed | Effective Removal of Sr<sup>2+</sup> Ions by K<sub>2</sub>SbPO<sub>6</sub>/Polyacrylonitrile Composite Microspheres |
| title_short | Effective Removal of Sr<sup>2+</sup> Ions by K<sub>2</sub>SbPO<sub>6</sub>/Polyacrylonitrile Composite Microspheres |
| title_sort | effective removal of sr sup 2 sup ions by k sub 2 sub sbpo sub 6 sub polyacrylonitrile composite microspheres |
| topic | strontium ion exchange phosphatoantimonate polyacrylonitrile composite microspheres |
| url | https://www.mdpi.com/2297-8739/11/12/344 |
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