Unexpected degradation and deiodination of diatrizoate by the Cu(II)/S(IV) system under anaerobic conditions
文献类型：期刊论文
| 作者 | Yang, Jingxin3; Luo, Yujie1; Fu, Xianghui3; Dong, Zijun4; Wang, Chuan3; Liu, Hong2 ; Jiang, Chengchun4
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| 刊名 | WATER RESEARCH
 |
| 出版日期 | 2021-06-15 |
| 卷号 | 198页码:9 |
| 关键词 | Anaerobic degradation copper sulfite deiodination Cu(I) diatrizoate |
| ISSN号 | 0043-1354 |
| DOI | 10.1016/j.watres.2021.117137 |
| 通讯作者 | Dong, Zijun(dzj@szpt.edu.cn) |
| 英文摘要 | Transition metal catalyzed sulfite auto-oxidation is a promising technology used in water and wastewater treatment for the elimination of contaminants. In the literature, this process has been reported to be efficient only in the presence of oxygen. However, in this study, we unexpectedly found that the degradation of diatrizoate (DTZ) by a system based on the combination of copper ion and sulfite (Cu(II)/S(IV)) reached over 95% under anaerobic conditions, but was considerably retarded under aerobic conditions at pH 7. Furthermore, it was found that Cu(I), generated from the cleavage of the CuSO3 complex, was the main reactive species responsible for the degradation of DTZ by the Cu(II)/S(IV) system under anaerobic conditions. In fact, the absence of oxygen promoted the accumulation of Cu(I). The concomitant release of the iodide ion with the degradation of DTZ indicated that the anaerobic degradation of DTZ by the Cu(II)/S(IV) system mainly proceeded through the deiodination pathway, which was also confirmed by the detection of deiodinated products. The anaerobic degradation of DTZ was favored at higher initial concentrations of Cu(II) or sulfite in this system. Since the CuSO3 complex, the precursor of Cu(I), was formed mainly at pH 7, the highest anaerobic degradation of DTZ was achieved at pH 7. An increase in reaction temperature considerably enhanced the degradation of DTZ by the Cu(II)/S(IV) system with an apparent activation energy of 119.4 kJ/mol. The presence of chloride, bicarbonate and humic acid slightly influenced the anaerobic degradation of DTZ. The experiments with real water samples also demonstrated the effectiveness of the degradation of DTZ by the Cu(II)/S(IV) system under anaerobic conditions. (C) 2021 Elsevier Ltd. All rights reserved. |
| 资助项目 | National Natural Science Foundation of China[42077159] ; National Natural Science Foundation of China[51727812] ; Project of Education commission of Guangdong Province of China[308-6020210 002T] |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:000651347800009 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/13574]  |
| 专题 | 中国科学院重庆绿色智能技术研究院 |
| 通讯作者 | Dong, Zijun |
| 作者单位 | 1.WISDRI City Construct Engn & Res Inc Ltd, Xudong St, Wuhan 430223, Peoples R China 2.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing 400714, Peoples R China 3.Guangzhou Univ, Inst Environm Res Greater Bay, Key Lab Water Qual & Conservat Pearl River Delta, Minist Educ, Guangzhou 510006, Peoples R China 4.Shenzhen Polytech, Dept Bldg & Environm Engn, Shenzhen 518055, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Jingxin,Luo, Yujie,Fu, Xianghui,et al. Unexpected degradation and deiodination of diatrizoate by the Cu(II)/S(IV) system under anaerobic conditions[J]. WATER RESEARCH,2021,198:9. |
| APA | Yang, Jingxin.,Luo, Yujie.,Fu, Xianghui.,Dong, Zijun.,Wang, Chuan.,...&Jiang, Chengchun.(2021).Unexpected degradation and deiodination of diatrizoate by the Cu(II)/S(IV) system under anaerobic conditions.WATER RESEARCH,198,9. |
| MLA | Yang, Jingxin,et al."Unexpected degradation and deiodination of diatrizoate by the Cu(II)/S(IV) system under anaerobic conditions".WATER RESEARCH 198(2021):9. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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