Adsorption of Cesium by Expanded Perlite/Ammonium Molybdophosphate Composite
Ammonium molybdophosphate(AMP) is a kind of heteropoly salt with strong selectivity and ion exchange capacity for 137Cs. But the small particle size and poor hydromechanical property of AMP, makes it difficult to separate in the later stage. In view of the above problems, AMP was loaded on the expan...
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| Format: | Article |
| Language: | zho |
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Editorial Office of Journal of Nuclear and Radiochemistry
2023-12-01
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| Series: | He huaxue yu fangshe huaxue |
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| Online Access: | http://www.jnrc.org.cn/CN/10.7538/hhx.2023.45.06.0563 |
| _version_ | 1797220452017373184 |
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| author | DENG Hao DENG Zhi SHI Xiang-peng LIU Jia-hong CHEN Mao-lin MA Xian-jin YANG Heng |
| author_facet | DENG Hao DENG Zhi SHI Xiang-peng LIU Jia-hong CHEN Mao-lin MA Xian-jin YANG Heng |
| author_sort | DENG Hao |
| collection | DOAJ |
| description | Ammonium molybdophosphate(AMP) is a kind of heteropoly salt with strong selectivity and ion exchange capacity for 137Cs. But the small particle size and poor hydromechanical property of AMP, makes it difficult to separate in the later stage. In view of the above problems, AMP was loaded on the expanded perlite to prepare the composite inorganic ion exchange material, and then the adsorption mechanism for Cs+ were characterized by X-ray diffraction(XRD), scanning electron microscopy(SEM), Fourier transforms infrared spectrometer(FTIR) and electron probe microanalyzer(EPMA). These results show that the stable adhesion of AMP on the expanded perlite/AMP composites is a physical process. The adsorption of Cs+ by the composite material reaches the adsorption equilibrium at 120 min. Its maximum saturated adsorption capacity is 13.21 mg/g. The adsorption process conforms to the quasi-second-order kinetic equation(r2=0.99). The isothermal adsorption process conforms to the Langmuir model(r2=0.99), which is a monolayer of chemisorption process with homogeneous adsorption points. The coexisting ions Al3+, Fe3+ and Ni2+ have little effect on the adsorption of Cs+, indicating that the composites have some selectivity for the adsorption separation of Cs+. |
| first_indexed | 2024-03-08T16:28:08Z |
| format | Article |
| id | doaj.art-348ec0b00ebf4286868f61b5a97f4d2c |
| institution | Directory Open Access Journal |
| issn | 0253-9950 |
| language | zho |
| last_indexed | 2024-04-24T12:49:45Z |
| publishDate | 2023-12-01 |
| publisher | Editorial Office of Journal of Nuclear and Radiochemistry |
| record_format | Article |
| series | He huaxue yu fangshe huaxue |
| spelling | doaj.art-348ec0b00ebf4286868f61b5a97f4d2c2024-04-06T05:48:47ZzhoEditorial Office of Journal of Nuclear and RadiochemistryHe huaxue yu fangshe huaxue0253-99502023-12-0145656357210.7538/hhx.2023.45.06.0563Adsorption of Cesium by Expanded Perlite/Ammonium Molybdophosphate CompositeDENG Hao0DENG Zhi1SHI Xiang-peng2LIU Jia-hong3CHEN Mao-lin4MA Xian-jin5YANG Heng6School of Materials and Chemistry, Southwest University of Science and TechnologySchool of Materials and Chemistry, Southwest University of Science and TechnologySchool of Materials and Chemistry, Southwest University of Science and TechnologySchool of Materials and Chemistry, Southwest University of Science and TechnologySchool of Materials and Chemistry, Southwest University of Science and TechnologySchool of Materials and Chemistry, Southwest University of Science and TechnologySchool of Materials and Chemistry, Southwest University of Science and TechnologyAmmonium molybdophosphate(AMP) is a kind of heteropoly salt with strong selectivity and ion exchange capacity for 137Cs. But the small particle size and poor hydromechanical property of AMP, makes it difficult to separate in the later stage. In view of the above problems, AMP was loaded on the expanded perlite to prepare the composite inorganic ion exchange material, and then the adsorption mechanism for Cs+ were characterized by X-ray diffraction(XRD), scanning electron microscopy(SEM), Fourier transforms infrared spectrometer(FTIR) and electron probe microanalyzer(EPMA). These results show that the stable adhesion of AMP on the expanded perlite/AMP composites is a physical process. The adsorption of Cs+ by the composite material reaches the adsorption equilibrium at 120 min. Its maximum saturated adsorption capacity is 13.21 mg/g. The adsorption process conforms to the quasi-second-order kinetic equation(r2=0.99). The isothermal adsorption process conforms to the Langmuir model(r2=0.99), which is a monolayer of chemisorption process with homogeneous adsorption points. The coexisting ions Al3+, Fe3+ and Ni2+ have little effect on the adsorption of Cs+, indicating that the composites have some selectivity for the adsorption separation of Cs+.http://www.jnrc.org.cn/CN/10.7538/hhx.2023.45.06.0563ammonium molybdophosphateexpanded perlitecesiumadsorption and separation |
| spellingShingle | DENG Hao DENG Zhi SHI Xiang-peng LIU Jia-hong CHEN Mao-lin MA Xian-jin YANG Heng Adsorption of Cesium by Expanded Perlite/Ammonium Molybdophosphate Composite He huaxue yu fangshe huaxue ammonium molybdophosphate expanded perlite cesium adsorption and separation |
| title | Adsorption of Cesium by Expanded Perlite/Ammonium Molybdophosphate Composite |
| title_full | Adsorption of Cesium by Expanded Perlite/Ammonium Molybdophosphate Composite |
| title_fullStr | Adsorption of Cesium by Expanded Perlite/Ammonium Molybdophosphate Composite |
| title_full_unstemmed | Adsorption of Cesium by Expanded Perlite/Ammonium Molybdophosphate Composite |
| title_short | Adsorption of Cesium by Expanded Perlite/Ammonium Molybdophosphate Composite |
| title_sort | adsorption of cesium by expanded perlite ammonium molybdophosphate composite |
| topic | ammonium molybdophosphate expanded perlite cesium adsorption and separation |
| url | http://www.jnrc.org.cn/CN/10.7538/hhx.2023.45.06.0563 |
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