Advantage of selective production of green rusts for Sb(V) removal in Fe(0) electrocoagulation
文献类型：期刊论文
| 作者 | Cao, Di; Qiao, Meng ; Li, Angzhen; Hao, Jingwei; Zhao, Xu
|
| 刊名 | CHINESE CHEMICAL LETTERS
 |
| 出版日期 | 2020-10 |
| 卷号 | 31期号:10页码:2779-2783 |
| 关键词 | Iron electrocoagulation Antimony Green rusts Sodium sulfite Phosphate |
| ISSN号 | 1001-8417 |
| 英文摘要 | The removal efficiency of pollutants in Fe(0) electrocoagulation (EC) has been associated closely with the speciation of generated Fe(II)/Fe(III) oxides during this process, which is very complicated and can be affected by various factors. In this work, in-situ Raman, X-ray diffraction and some other techniques have been used to study the speciation of Fe under different conditions and to establish a relationship between Fe speciation and Sb(V) removal efficiency. Results indicated that concentration of dissolved oxygen (DO) is a key factor influencing Fe(0) EC. It was found that green rusts (GRs) were formed and were then transformed into magnetite at lower DO concentration, and Sb(V) removal efficiency reached 99.9% after 30 min of EC. In contrast, gamma-FeOOH was formed at high DO concentration, and the removal efficiency of Sb(V) after 30 min of EC was only 72.8%. In the presence of sulfite and phosphate with low concentrations, GRs can be stabilized and benefit the removal of Sb(V). We believe this work will provide some new insights on the mechanism of Fe(0) EC and the effective removal of other pollutants during Fe(0) EC process. (C) 2020 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/45235]  |
| 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 |
| 推荐引用方式 GB/T 7714 | Cao, Di,Qiao, Meng,Li, Angzhen,et al. Advantage of selective production of green rusts for Sb(V) removal in Fe(0) electrocoagulation[J]. CHINESE CHEMICAL LETTERS,2020,31(10):2779-2783. |
| APA | Cao, Di,Qiao, Meng,Li, Angzhen,Hao, Jingwei,&Zhao, Xu.(2020).Advantage of selective production of green rusts for Sb(V) removal in Fe(0) electrocoagulation.CHINESE CHEMICAL LETTERS,31(10),2779-2783. |
| MLA | Cao, Di,et al."Advantage of selective production of green rusts for Sb(V) removal in Fe(0) electrocoagulation".CHINESE CHEMICAL LETTERS 31.10(2020):2779-2783. |
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来源：生态环境研究中心
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