Thiourea Dioxide Coupled with Trace Cu(II): An Effective Process for the Reductive Degradation of Diatrizoate
文献类型：期刊论文
| 作者 | Xu, Haodan; Wang, Lihong; Li, Xuchun; Chen, Zhiqiang; Zhang, Tao |
| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2021-09-07 |
| 卷号 | 55期号:17页码:12009-12018 |
| 关键词 | diatrizoate refractory X-ray contrast media compounds thiourea dioxide trace concentrations of copper Cu(I) complexes deiodination reduction reaction hospital wastewater |
| ISSN号 | 0013-936X |
| 英文摘要 | Diatrizoate, a refractory ionic iodinated X-ray contrast media (ICM) compound, cannot be efficiently degraded in a complex wastewater matrix even by advanced oxidation processes. We report in this research that a homogeneous process, thiourea dioxide (TDO) coupled with trace Cu(II) (several micromoles, ubiquitous in some wastewater), is effective for reductive deiodination and degradation of diatrizoate at neutral pH values. Specifically, the molar ratio of iodide released to TDO consumed reached 2 under ideal experimental conditions. TDO eventually decomposed into urea and sulfite/sulfate. Based on the results of diatrizoate degradation, TDO decomposition, and Cu(I) generation and consumption during the TDO-Cu(II) reaction, we confirmed that Cu(I) is responsible for diatrizoate degradation. However, free Cu(I) alone did not work. It was proposed that Cu(I) complexes are actual reactive species toward diatrizoate. Inorganic anions and effluent organic matter negatively influence diatrizoate degradation, but by increasing the TDO dosage, as well as extending the reaction time, its degradation efficiency can still be guaranteed for real hospital wastewater. This reduction reaction could be potentially useful for in situ deiodination and degradation of diatrizoate in hospital wastewater before discharge into municipal sewage networks. |
| WOS研究方向 | Engineering, Environmental ; Environmental Sciences |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/46008]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Beijing 100085, Peoples R China 2.Harbin Inst Technol, Sch Environm, State Key Lab Urban Water Resource & Environm, Harbin 150090, Peoples R China 3.Zhejiang Gongshang Univ, Sch Environm Sci & Engn, Hangzhou 310018, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Haodan,Wang, Lihong,Li, Xuchun,et al. Thiourea Dioxide Coupled with Trace Cu(II): An Effective Process for the Reductive Degradation of Diatrizoate[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2021,55(17):12009-12018. |
| APA | Xu, Haodan,Wang, Lihong,Li, Xuchun,Chen, Zhiqiang,&Zhang, Tao.(2021).Thiourea Dioxide Coupled with Trace Cu(II): An Effective Process for the Reductive Degradation of Diatrizoate.ENVIRONMENTAL SCIENCE & TECHNOLOGY,55(17),12009-12018. |
| MLA | Xu, Haodan,et al."Thiourea Dioxide Coupled with Trace Cu(II): An Effective Process for the Reductive Degradation of Diatrizoate".ENVIRONMENTAL SCIENCE & TECHNOLOGY 55.17(2021):12009-12018. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
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。