Behavior of tetracycline and macrolide antibiotics in activated sludge process and their subsequent removal during sludge reduction by ozone
文献类型：期刊论文
| 作者 | Li, Yangang; Ben, Weiwei; Wang, Lu; Qiang, Zhimin; Liu, Chao |
| 刊名 | CHEMOSPHERE
 |
| 出版日期 | 2018-09-01 |
| 卷号 | 206页码:184-191 |
| 关键词 | Antibiotics Sorption Ozonation Sludge reduction Activated sludge process |
| ISSN号 | 0045-6535 |
| 文献子类 | Article |
| 英文摘要 | Ozonation is a promising means for the reduction of excess sludge in wastewater treatment plants. However, little information is available on the removal of antibiotics during sludge ozonation. Therefore, this study investigated first the behavior of four commonly-used hydrophobic antibiotics, including three tetracyclines (tetracycline, oxytetracycline, and doxycycline) and one macrolide (azithromycin) in activated sludge process and then their removal during sludge reduction by ozone. Results indicate that the studied antibiotics were primarily transferred into the solid phase of activated sludge via sorption, which was a reversible, spontaneous, and exothermic process governed by surface reactions. Sludge ozonation could effectively remove 86.4-93.6% of the antibiotics present in the sludge at an ozone dose of 102 mg per gram of mixed liquor suspended solids and pH 7.2. The removal of studied antibiotics mainly proceeded through desorption and subsequent oxidation. Increasing the initial pH from 5.0 to 9.5 obviously enhanced the antibiotic removal during sludge ozonation. This study demonstrated that the activated sludge process coupled with sludge ozonation can simultaneously reduce excess sludge and eliminate antibiotics. (C) 2018 Elsevier Ltd. All rights reserved. |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/41320]  |
| 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 | Li, Yangang,Ben, Weiwei,Wang, Lu,et al. Behavior of tetracycline and macrolide antibiotics in activated sludge process and their subsequent removal during sludge reduction by ozone[J]. CHEMOSPHERE,2018,206:184-191. |
| APA | Li, Yangang,Ben, Weiwei,Wang, Lu,Qiang, Zhimin,&Liu, Chao.(2018).Behavior of tetracycline and macrolide antibiotics in activated sludge process and their subsequent removal during sludge reduction by ozone.CHEMOSPHERE,206,184-191. |
| MLA | Li, Yangang,et al."Behavior of tetracycline and macrolide antibiotics in activated sludge process and their subsequent removal during sludge reduction by ozone".CHEMOSPHERE 206(2018):184-191. |
入库方式： OAI收割
来源：生态环境研究中心
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