铀
吸附
吸附
水溶液
吸附剂
弗伦德利希方程
朗缪尔
吸热过程
朗缪尔吸附模型
核化学
材料科学
化学
化学工程
无机化学
冶金
有机化学
工程类
作者
Lichao Tan,Xiaofei Zhang,Qi Liu,Xiaoyan Jing,Jingyuan Liu,Dalei Song,Songxia Hu,Lianhe Liu,Jun Wang
标识
DOI:10.1016/j.colsurfa.2015.01.040
摘要
Adsorption of uranium (VI) from aqueous solution by Fe3O4@TiO2 composites was studied by batch experiments. The adsorbent was characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction and magnetic measurements. The adsorptions of uranium (VI) from aqueous solution on Fe3O4@TiO2 were fitted to the Langmuir and Freundlich adsorption isotherms. The adsorption of uranium (VI) could be well-described by Langmuir. The maximum sorption capacity of Fe3O4@TiO2 for uranium (VI) was evaluated to be 118.8 mg U g−1 at pH 6.0. Thermodynamic parameters further showed that the sorption was an endothermic and spontaneous process. The uranium (VI)-loaded Fe3O4@TiO2 could be readily separated from aqueous solutions by an external magnetic field. Results suggested that Fe3O4@TiO2 was a powerful promising sorbent for the efficient removal of uranium (VI) from aqueous solutions.
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