LDH(Mg/Al:2)@montmorillonite nanocomposite as a novel anion-exchanger to adsorb uranyl ion from carbonate-containing solutions
| Autor: | A. R. Khanchi, Javad Koleini, Hassan Seddighi, Javad Fasihi, Ahmad Khodadadi Darban |
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| Rok vydání: | 2017 |
| Předmět: |
Health
Toxicology and Mutagenesis Inorganic chemistry 02 engineering and technology 010501 environmental sciences engineering.material 01 natural sciences Hydrothermal circulation Analytical Chemistry chemistry.chemical_compound symbols.namesake Adsorption Coating Radiology Nuclear Medicine and imaging Spectroscopy 0105 earth and related environmental sciences Aqueous solution Nanocomposite Public Health Environmental and Occupational Health Langmuir adsorption model 021001 nanoscience & nanotechnology Uranyl Pollution Montmorillonite Nuclear Energy and Engineering chemistry symbols engineering 0210 nano-technology Nuclear chemistry |
| Zdroj: | Journal of Radioanalytical and Nuclear Chemistry. 314:415-427 |
| ISSN: | 1588-2780 0236-5731 |
| DOI: | 10.1007/s10967-017-5387-7 |
| Popis: | A layered double hydroxide@montmorillonite nanocomposite (LDH@MMT) was synthesized by the coating of growing LDH layers onto the MMT surface through hydrothermal method and used to remove uranyl ion from carbonate-containing aqueous solutions. The adsorption kinetics was described using a pseudo-second-order model and the adsorption isotherms data was successfully explained by the Langmuir model. The adsorption capacity of MMT was considerably enhanced from 16 to more than 55 mg g−1 after coating of LDH at a wide range of pH (3–11). The synthesized hybrid adsorbent showed a higher affinity toward UO2(CO3) 2 2− and UO2(CO3) 3 4− species. These findings herein propose that LDH@MMT nanocomposite is a potential and proper adsorbent for the removal of U(VI) from natural and polluted waters. |
| Databáze: | OpenAIRE |
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