| Fu Wentong,Luo Bingkun,Chen Huizhen,Zhuang Wanjin,Liu Shiyu,Chen Lianzhi. 1988. Fibrous adsorbent containing amidoxime and carboxyl groups and adsorption of uranium. Acta Oceanologica Sinica, (1):74－81 |
| Fibrous adsorbent containing amidoxime and carboxyl groups and adsorption of uranium |
| Fibrous adsorbent containing amidoxime and carboxyl groups and adsorption of uranium |
| Received:September 03, 1986 Revised:May 20, 1987 |
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| Author Name | Affiliation | | Fu Wentong | Third Institute of Oceanography, State Oceanic Administration Xiamen, China | | Luo Bingkun | Third Institute of Oceanography, State Oceanic Administration Xiamen, China | | Chen Huizhen | Third Institute of Oceanography, State Oceanic Administration Xiamen, China | | Zhuang Wanjin | Third Institute of Oceanography, State Oceanic Administration Xiamen, China | | Liu Shiyu | Third Institute of Oceanography, State Oceanic Administration Xiamen, China | | Chen Lianzhi | Third Institute of Oceanography, State Oceanic Administration Xiamen, China |
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| Abstract: |
| Through introducing amidoxime and carboxyl groups into polyacrylonitrile fiber, a fibrous adsorbent with high capacity and fast adsorption rate was obtained, which could adsorb 4.6 mg uranium/g in 10 days from natural seawater. The influence of the functional group content on equilibrium adsorption capacity Xm and adsorption rate constant K of the adsorbent was studied, thus indicating that the contents of amidoxime and carboxyl groups correlated with Xm and K respectively. It is concluded that the amidoxime group is of reactive adsorption, while the carboxyl group is of promotion in the adsorption of uranium. In this paper, the mechanism of uranium adsorption on the fibrous adsorbent is deduced and the chelating structure of adsorption species is discussed with molecule orbit theory. |
| 中文摘要: |
| Through introducing amidoxime and carboxyl groups into polyacrylonitrile fiber, a fibrous adsorbent with high capacity and fast adsorption rate was obtained, which could adsorb 4.6 mg uranium/g in 10 days from natural seawater. The influence of the functional group content on equilibrium adsorption capacity Xm and adsorption rate constant K of the adsorbent was studied, thus indicating that the contents of amidoxime and carboxyl groups correlated with Xm and K respectively. It is concluded that the amidoxime group is of reactive adsorption, while the carboxyl group is of promotion in the adsorption of uranium. In this paper, the mechanism of uranium adsorption on the fibrous adsorbent is deduced and the chelating structure of adsorption species is discussed with molecule orbit theory. |
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