Removal and Recovery of Uranium from Groundwater Using Direct Electrochemical Reduction Method: Performance and Implications | |
Liu, Tian; Yuan, Jili; Zhang, Bo; Liu, Wenbin; Lin, Leiming; Meng, Ying; Yin, Shuangfeng; Liu, Chengbin; Luan, Fubo | |
刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY |
2019-12-17 | |
卷号 | 53期号:24页码:14612-14619 |
ISSN号 | 0013-936X |
英文摘要 | Removal of uranium from groundwater is of great significance as compared to in situ bioimmobilization technology. In this study, a novel direct electro-reductive method has been developed to efficiently remove and recover uranium from carbonate-containing groundwater, where U(VI)O-2(CO3)(3)(4-) and Ca2U(VI)O-2(CO3)(3) are the dominant U species. The transferred electron calculations and XPS, XRD analyses confirmed that U(VI) was reduced to U(IV)O2 and accumulated on the surface of the Ti electrode (defined as Ti@U(IV)O-2 electrode) with high current efficiencies (over 90.0%). Moreover, over 98.0% of the accumulated U(IV)O-2 could be recovered by soaking the Ti@U(IV)O-2 electrode in the dilute nitric acid. Results demonstrated that the accumulated U(IV)O-2 on the surface of the Ti electrode played a key role in the removal of U(VI), which can promote the electro-reduction of U(VI). Therefore, the electrode could be used repeatedly and has a high removal capacity of U(VI) due to the continuous accumulation of active U(IV)O-2 on the surface of the electrode. Significantly, the uranium in both real and high salinity groundwater can be efficiently removed. This study implies that the proposed direct electro-reductive method has great potential for the removal and recovery of uranium from groundwater and uranium-containing wastewater. |
内容类型 | 期刊论文 |
源URL | [http://ir.rcees.ac.cn/handle/311016/43514] |
专题 | 生态环境研究中心_中国科学院饮用水科学与技术重点实验室 |
作者单位 | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Drinking Water Sci & Technol, Beijing 100085, Peoples R China 2.Hunan Univ, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
推荐引用方式 GB/T 7714 | Liu, Tian,Yuan, Jili,Zhang, Bo,et al. Removal and Recovery of Uranium from Groundwater Using Direct Electrochemical Reduction Method: Performance and Implications[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2019,53(24):14612-14619. |
APA | Liu, Tian.,Yuan, Jili.,Zhang, Bo.,Liu, Wenbin.,Lin, Leiming.,...&Luan, Fubo.(2019).Removal and Recovery of Uranium from Groundwater Using Direct Electrochemical Reduction Method: Performance and Implications.ENVIRONMENTAL SCIENCE & TECHNOLOGY,53(24),14612-14619. |
MLA | Liu, Tian,et al."Removal and Recovery of Uranium from Groundwater Using Direct Electrochemical Reduction Method: Performance and Implications".ENVIRONMENTAL SCIENCE & TECHNOLOGY 53.24(2019):14612-14619. |
个性服务 |
查看访问统计 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论