Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| Insights into removal of sulfonamides in anaerobic activated sludge system: Mechanisms, degradation pathways and stress responses | |
| Zhao, Qi1; Guo, Wanqian1; Luo, Haichao1; Xing, Chuanming1; Wang, Huazhe1; Liu, Banghai1; Si, Qishi1; Li, Denian2; Sun, Lushi3; Ren, Nanqi1 | |
| 2022-02-05 | |
| Source Publication | JOURNAL OF HAZARDOUS MATERIALS
 |
| ISSN | 0304-3894 |
| Volume | 423Pages:12 |
| Corresponding Author | Guo, Wanqian(gouwanqian@hit.edu.cn) |
| Abstract | 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. |
| Keyword | Antibiotics Stress responses Biodegradation Enzymes Biotransformation products |
| DOI | 10.1016/j.jhazmat.2021.127248 |
| WOS Keyword | EXTRACELLULAR POLYMERIC SUBSTANCES ; MICROBIAL COMMUNITY ; WASTE-WATER ; ELECTRON-TRANSFER ; SERUM-ALBUMIN ; ANTIBIOTICS ; SULFAMETHOXAZOLE ; BIODEGRADATION ; SORPTION ; PHARMACEUTICALS |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Engineering ; Environmental Sciences & Ecology |
| Funding Organization | National Key R&D Pro-gram of China ; National Natural Science Foundation of China ; State Key Laboratory of Urban Water Resource and Environment |
| WOS Subject | Engineering, Environmental ; Environmental Sciences |
| WOS ID | WOS:000704630800005 |
| Publisher | ELSEVIER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/35045 |
| Collection | 中国科学院广州能源研究所 |
| Corresponding Author | Guo, Wanqian |
| Affiliation | 1.Harbin Inst Technol, State Key Lab Urban Water Resource & Environm, Harbin, 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.Huazhong Univ Sci & Technol, Sch Energy & Power Engn, State Key Lab Coal Combust, Wuhan 430074, Peoples R China |
| Recommended Citation 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. |
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