吸附
化学
朗缪尔吸附模型
水溶液
喹啉
傅里叶变换红外光谱
吸热过程
吸附
铀
活性炭
核化学
朗缪尔
扫描电子显微镜
分析化学(期刊)
作者
Soaad M. Elashry,Sh. Labib,Mohamed F. Attallah
出处
期刊:Radiochimica Acta
[Oldenbourg Wissenschaftsverlag]
日期:2021-12-22
卷期号:110 (3): 157-171
被引量:1
标识
DOI:10.1515/ract-2021-1071
摘要
Abstract The activated carbon (AC) was modified by molecules of quinoline (Q) and the new prepared AC impregnated by Q was characterized using Fourier transform infrared (FTIR), Raman spectroscopy, surface measurements, scanning electron microscope (SEM) and transmission electron microscope (TEM). These analytical techniques demonstrated a successful preparation of AC-Q as a new material which was examined for its sorption behavior for natural uranium. The sorption results by batch mode indicated the optimum conditions for 94.5% removal of U(VI) ions at pH 4.7 and an equilibrium contact time of 90 min. The analysis of sorption data revealed that the pseudo-second-order and Langmuir were more fitted than other estimated models. The sorption capacity of U(VI) was ∼63 mg/g onto AC-Q as adsorbent martial. The thermodynamic data demonstrated that the sorption of uranium is endothermic and spontaneous. New mechanism was supposed based on the role of the abrasive material quinoline on the mechanical removal of uranium from aqueous solution.
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