Investigation of thorium (IV) adsorptive behavior onto functionalized magnetite nanoparticles
| Autor: | A. Ezat, Zeinab F. Akl |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Exothermic reaction
Aqueous solution Chemistry Health Toxicology and Mutagenesis Public Health Environmental and Occupational Health Thorium chemistry.chemical_element 010403 inorganic & nuclear chemistry 01 natural sciences Pollution 0104 chemical sciences Analytical Chemistry Magnetite Nanoparticles Oleic acid chemistry.chemical_compound Adsorption Nuclear Energy and Engineering Radiology Nuclear Medicine and imaging Freundlich equation Spectroscopy Dithiophosphinic acid Nuclear chemistry |
| Zdroj: | Journal of Radioanalytical and Nuclear Chemistry. 328:1291-1300 |
| ISSN: | 1588-2780 0236-5731 |
| Popis: | The potential of magnetite nanoparticles functionalized with oleic acid (MNPOA) and bis(2,4,4-trimethylpentyl)dithiophosphinic acid (MNPDTPA) as efficient thorium adsorbents were evaluated. The experimental factors that control thorium adsorption capacity, e.g. pH, adsorption time, thorium initial concentration, and temperature were investigated. The adsorption data of both adsorbents fitted best to pseudo-first-order and Freundlich models. Maximum adsorption capacity at 25 °C was 370 and 454 mg g−1 for MNPOA and MNPDTPA, respectively. Temperature dependency of thorium adsorption and thermodynamics parameters were investigated. The results declared the spontaneity, feasibility, and exothermic nature of the adsorption process demonstrating that MNPOA and MNPDTPA can be used as economic alternatives for the efficient thorium removal from aqueous solutions. |
| Databáze: | OpenAIRE |
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