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Optimization of molar content of amidoxime and acrylic acid in UHMWPE fibers for improvement of seawater uranium adsorption capacity |
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| Authors: | Li Rong Pang Lijuan Ma Hongjuan Liu Xiyan Zhang Mingxing Gao Qianhong Wang Honglong Xing Zhe Wang Mouhua Wu Guozhong |
| Institution: | 1.Shanghai Institute of Applied Physics, Chinese Academy of Sciences, No. 2019 Jialuo Road, Jiading District, Shanghai, 201800, China ;2.University of Chinese Academy of Sciences, No. 19 Yuquan Road, Shijingshan District, Beijing, 100049, China ;3.School of Physical Science and Technology, ShanghaiTech University, No. 319 Yueyang Road, Xuhui District, Shanghai, 200031, China ; |
| Abstract: | Ultra-high molecular weight polyethylene (UHMWPE) fibrous adsorbents with different molar content of amidoxime (M AO) and acrylic acid (M AA) were prepared by graft polymerization of acrylonitrile (AN) and acrylic acid (AA), followed by amidoximation. Uranium adsorption experiments in both artificial and natural seawater were carried out to investigate the effect of M AO and M AA on the uranium adsorption capacity of UHMWPE fibrous adsorbents. Adsorption results showed that the UHMWPE fibrous adsorbent with M AO = 4.27 and M AA = 4.64 mmol/g-ads exhibited better uranium adsorption capacity in both artificial (7.01 mg-U/g-ads) and natural (0.77 mg-U/g-ads) seawater. |
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