Adsorption of Uranium(VI) from a Simulated Saline Solution by Alkali-Activated Leather Waste
| Autor: | Yu He, Zhongqiang Zou, Tingsong Yan, Xiaoyan Lin, Xuegang Luo |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Aqueous solution
Ion exchange Chemistry General Chemical Engineering Inorganic chemistry Langmuir adsorption model chemistry.chemical_element 02 engineering and technology General Chemistry Uranium 021001 nanoscience & nanotechnology 010403 inorganic & nuclear chemistry Alkali metal 01 natural sciences Industrial and Manufacturing Engineering 0104 chemical sciences symbols.namesake Adsorption Selective adsorption symbols Fourier transform infrared spectroscopy 0210 nano-technology Nuclear chemistry |
| Zdroj: | Industrial & Engineering Chemistry Research. 56:3251-3258 |
| ISSN: | 1520-5045 0888-5885 |
| DOI: | 10.1021/acs.iecr.6b04425 |
| Popis: | A porous adsorbent was prepared from leather waste by activation with alkali. The adsorbent, alkali-activated leather waste (AALW), was applied to adsorb uranium(VI) and characterized by scanning electron microscopy, energy-dispersive X-ray detection, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy. The influence of the pH, initial uranium(VI) concentration, temperature, and contact time on the adsorption of uranium(VI) was systematically investigated. The adsorption of uranium(VI) on AALW obeyed the Langmuir isotherm model and was attributed to ion exchange and complexation coordination. Thermodynamic and kinetic studies showed that the adsorption process was spontaneous and endothermic, and it reached adsorption equilibrium in 360 min. Moreover, the selective adsorption of uranium(VI) from an aqueous solution containing coexisting ions and adsorption of trace uranium(VI) from a simulated high-salinity environment showed that AALW had not only a strong affinity but a high se... |
| Databáze: | OpenAIRE |
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