Insights into removal of sulfonamides in anaerobic activated sludge system: Mechanisms, degradation pathways and stress responses
文献类型：期刊论文
| 作者 | Zhao, Qi3; Guo, Wanqian3; Luo, Haichao3; Xing, Chuanming3; Wang, Huazhe3; Liu, Banghai3; Si, Qishi3; Li, Denian2; Sun, Lushi1; Ren, Nanqi3 |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2022-02-05 |
| 卷号 | 423页码:12 |
| ISSN号 | 0304-3894 |
| 关键词 | Antibiotics Stress responses Biodegradation Enzymes Biotransformation products |
| DOI | 10.1016/j.jhazmat.2021.127248 |
| 通讯作者 | Guo, Wanqian(gouwanqian@hit.edu.cn) |
| 英文摘要 | The fate of antibiotics in activated sludge has attracted increasing interests. However, the focus needs to shift from concerning removal efficiencies to understanding mechanisms and sludge responding to antibiotic toxicity. Herein, we operated two anaerobic sequencing batch reactors (ASBRs) for 200 days with sulfadiazine (SDZ) and sulfamethoxazole (SMX) added. The removal efficiency of SMX was higher than that of SDZ. SDZ was removed via adsorption (9.91-21.18%) and biodegradation (10.20-16.00%), while biodegradation (65.44-86.26%) was dominant for SMX removal. The mechanisms involved in adsorption and biodegradation were investigated, including adsorption strength, adsorption sites and the roles of enzymes. Protein-like substance (tryptophan) functioned vitally in adsorption by forming complexes with sulfonamides. P450 enzymes may catalyze sulfonamides degradation via hydroxylation and desulfurization. Activated sludge showed distinct responses to different sulfonamides, reflected in the changes of microbial communities and functions. These responses were related to sulfonamides removal, corresponding to the stronger adsorption capacity of activated sludge in ASBRSDZ and degradation capacity in ASBR-SMX. Furthermore, the reasons for different removal efficiencies of sulfonamides were analyzed according to steric and electronic effects. These findings propose insights into antibiotic removal and broaden the knowledge for self-protection mechanisms of activated sludge under chronic toxicities of antibiotics. |
| WOS关键词 | EXTRACELLULAR POLYMERIC SUBSTANCES ; MICROBIAL COMMUNITY ; WASTE-WATER ; ELECTRON-TRANSFER ; SERUM-ALBUMIN ; ANTIBIOTICS ; SULFAMETHOXAZOLE ; BIODEGRADATION ; SORPTION ; PHARMACEUTICALS |
| 资助项目 | National Key R&D Pro-gram of China[2019YFC19066] ; National Natural Science Foundation of China[51978201] ; State Key Laboratory of Urban Water Resource and Environment[2020DX08] |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000704630800005 |
| 资助机构 | National Key R&D Pro-gram of China ; National Natural Science Foundation of China ; State Key Laboratory of Urban Water Resource and Environment |
| 源URL | [http://ir.giec.ac.cn/handle/344007/35044]  |
| 专题 | 中国科学院广州能源研究所 |
| 通讯作者 | Guo, Wanqian |
| 作者单位 | 1.Huazhong Univ Sci & Technol, Sch Energy & Power Engn, State Key Lab Coal Combust, Wuhan 430074, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Lab Integrated Technol Urban & Rural Mines Exploi, 2 Nengyuan Rd, Guangzhou 510640, Guangdong, Peoples R China 3.Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Harbin, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Qi,Guo, Wanqian,Luo, Haichao,et al. Insights into removal of sulfonamides in anaerobic activated sludge system: Mechanisms, degradation pathways and stress responses[J]. JOURNAL OF HAZARDOUS MATERIALS,2022,423:12. |
| APA | Zhao, Qi.,Guo, Wanqian.,Luo, Haichao.,Xing, Chuanming.,Wang, Huazhe.,...&Ren, Nanqi.(2022).Insights into removal of sulfonamides in anaerobic activated sludge system: Mechanisms, degradation pathways and stress responses.JOURNAL OF HAZARDOUS MATERIALS,423,12. |
| MLA | Zhao, Qi,et al."Insights into removal of sulfonamides in anaerobic activated sludge system: Mechanisms, degradation pathways and stress responses".JOURNAL OF HAZARDOUS MATERIALS 423(2022):12. |
入库方式： OAI收割
来源：广州能源研究所
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。