Accelerated degradation of pharmaceuticals by ferrous ion/chlorine process: Roles of Fe(IV) and reactive chlorine species
文献类型：期刊论文
| 作者 | Mao, Yuanxiang; Liang, Jialiang; Ji, Fangying; Dong, Huiyu; Jiang, Lei; Shen, Qiushi; Zhang, Qian |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2021-09-15 |
| 卷号 | 787页码:- |
| 关键词 | Advanced oxidation process Ferrous ion Free chlorine Fe(IV) |
| ISSN号 | 0048-9697 |
| 英文摘要 | In this study, we determined the mechanisms and kinetics of the degradations of ibuprofen (IBP) and sulfamethoxazole (SMX), and identified the active species contributions in ferrous ion (Fe(II))/free chlorine (FC) system. Reactive chlorine species (RCS) were the major contributor to the degradations of IBP (73.0%) and SMX (59.3%), respectively, at pH 3. Due to the low reaction rates between Fe(IV) and target pollutants (k(Fe(IV),IBP) = (1.5 +/- 0.03) x 10(3) M-1 s(-1) and kF(e(IV),SMX) = (4.8 +/- 0.2) x 10(3) M-1 s(-1)) and the low [Fe(IV)](ss) ((5.0 +/- 0.6) x 10(-8) M), Fe(IV) was not the main contributor and only contributed 0.17% and 0.86% to the degradation of IBP and SMX, respectively, at pH 3. The degradations of pharmaceuticals were facilitated by acidic conditions. Chloride (Cl-) accelerated the degradation of SMX and had a weak effect on the degradation of IBP. Natural organic matter limited the degradation of IBP and SMX. Overall, we demonstrated that multiple active oxidants (Fe (IV) and RCS) are produced by Fe(II)/FC and elucidated the mechanism of active oxidants degradation of pollutants. (C) 2021 Elsevier B.V. All rights reserved. |
| WOS研究方向 | Environmental Sciences |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/46170]  |
| 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, 18 Shuang Qing Rd, Beijing 100085, Peoples R China 2.Chongqing Univ, Key Lab Gorges Reservoir Reg Ecoenvironm 3, Minist Educ, Chongqing 400045, Peoples R China 3.Chongqing Univ, Coll Environm & Ecol, Chongqing 400045, Peoples R China |
| 推荐引用方式 GB/T 7714 | Mao, Yuanxiang,Liang, Jialiang,Ji, Fangying,et al. Accelerated degradation of pharmaceuticals by ferrous ion/chlorine process: Roles of Fe(IV) and reactive chlorine species[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2021,787:-. |
| APA | Mao, Yuanxiang.,Liang, Jialiang.,Ji, Fangying.,Dong, Huiyu.,Jiang, Lei.,...&Zhang, Qian.(2021).Accelerated degradation of pharmaceuticals by ferrous ion/chlorine process: Roles of Fe(IV) and reactive chlorine species.SCIENCE OF THE TOTAL ENVIRONMENT,787,-. |
| MLA | Mao, Yuanxiang,et al."Accelerated degradation of pharmaceuticals by ferrous ion/chlorine process: Roles of Fe(IV) and reactive chlorine species".SCIENCE OF THE TOTAL ENVIRONMENT 787(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
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