Investigations into the Reusability of Amidoxime-Based Polymeric Adsorbents for Seawater Uranium Extraction
| العنوان: | Investigations into the Reusability of Amidoxime-Based Polymeric Adsorbents for Seawater Uranium Extraction |
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| المؤلفون: | Sadananda Das, Jonathan E. Strivens, Erich A. Schneider, Christopher J. Janke, Richard T. Mayes, Horng-Bin Pan, Li-Jung Kuo, Nicholas J. Schlafer, Margaret Flicker Byers, Chien M. Wai, Jordana R. Wood, Gary A. Gill |
| المصدر: | Industrial & Engineering Chemistry Research. 56:11603-11611 |
| بيانات النشر: | American Chemical Society (ACS), 2017. |
| سنة النشر: | 2017 |
| مصطلحات موضوعية: | Chromatography, Chemistry, Elution, General Chemical Engineering, Extraction (chemistry), chemistry.chemical_element, 02 engineering and technology, General Chemistry, Reuse, Uranium, 010402 general chemistry, 021001 nanoscience & nanotechnology, 01 natural sciences, Industrial and Manufacturing Engineering, 0104 chemical sciences, Potassium bicarbonate, chemistry.chemical_compound, Adsorption, Seawater, 0210 nano-technology, Nuclear chemistry, Reusability |
| الوصف: | The ability to reuse amidoxime-based polymeric adsorbents is a critical component in reducing the overall cost of the technology to extract uranium from seawater. This report describes an evaluation of adsorbent reusability in multiple reuse (adsorption/stripping) cycles in real seawater exposures with potassium bicarbonate (KHCO3) elution using several amidoxime-based polymeric adsorbents. The KHCO3 elution technique achieved ∼100% recovery of uranium adsorption capacity in the first reuse. Subsequent reuses showed significant drops in adsorption capacity. After the fourth reuse with the ORNL AI8 adsorbent, the 56-day adsorption capacity dropped to 28% of its original capacity. FTIR spectra revealed that there was a conversion of the amidoxime ligands to carboxylate groups during extended seawater exposure, becoming more significant with longer exposure times. Ca and Mg adsorption capacities also increased with each reuse cycle supporting the hypothesis that long-term exposure resulted in converting amid... |
| تدمد: | 1520-5045 0888-5885 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::7e670f59de49acb4ba1bd86678532433 https://doi.org/10.1021/acs.iecr.7b02893 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi...........7e670f59de49acb4ba1bd86678532433 |
| قاعدة البيانات: | OpenAIRE |
Find this issue from the American Chemical Society | تدمد: | 15205045 08885885 |
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