Monitoring the nitrous oxide emissions and biological nutrient removal from wastewater treatment: Impact of per fl uorooctanoic acid
文献类型：期刊论文
| 作者 | Chen, Hongbo1; Zou, Mei1; Zhou, Yaoyu2; Zeng, Long1; Yang, Xiao3 |
| 刊名 | JOURNAL OF HAZARDOUS MATERIALS
 |
| 出版日期 | 2021-01-15 |
| 卷号 | 402页码:12 |
| ISSN号 | 0304-3894 |
| 关键词 | Perfluoroalkyl and polyfluoroalkyl substances Perfluorooctanoic acid Biological nutrient removal Nitrous oxide emissions Extracellular polymeric substances |
| DOI | 10.1016/j.jhazmat.2020.123469 |
| 通讯作者 | Yang, Xiao(knuyx0309@gmail.com) |
| 英文摘要 | The impacts of perfluorooctanoic acid (PFOA) on biological nutrient removal and nitrous oxide (N2O) emissions have been specifically studied. The experimental results show that PFOA inhibited nitrification, but promoted denitrification and reduced N2O emissions without significantly affecting phosphorus removal. The existence of 20 mg/L of PFOA increased total nitrogen removal efficiency from 78.7 +/- 6.89 % to 86.8 +/- 6.39 % and reduced N2O emission factor from 6.02 +/- 0.24 % to 4.43 +/- 0.10 %. The mechanism studies reveal that microorganisms released extracellular polymeric substances (EPS) under PFOA exposure to protect sludge cells against PFOA toxicity. The generated PFOA-EPS conjugates reduced the nitrification rate, but increased the denitrification rate by regulating the activity of oxidoreductases. In addition, PFOA reduced the activity of polyphosphate accu-mulating organisms and glycogen accumulating organisms to save carbon source for denitrification, which reduced the electronic competition between reductases, thereby achieving complete denitrification and N2O mitigation. The promotion of PFOA for denitrification and N2O mitigation can gain a more comprehensive cognition of the role of PFOA in wastewater treatment. The release mechanism of EPS can afford new insights for the development of effective methods to enhance nitrogen removal and reduce N2O emissions. |
| WOS关键词 | EXTRACELLULAR POLYMERIC SUBSTANCES ; SEQUENCING BATCH REACTOR ; PHOSPHORUS REMOVAL ; PERFLUOROOCTANOIC ACID ; ACTIVATED-SLUDGE ; N2O EMISSIONS ; DENITRIFICATION ; METABOLISM ; PFOA ; SULFAMETHAZINE |
| 资助项目 | National Natural Science Foundation of China[51608464] ; Natural Science Foundation of Hunan Province[2020JJ4576] |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| 出版者 | ELSEVIER |
| WOS记录号 | WOS:000593837900014 |
| 资助机构 | National Natural Science Foundation of China ; Natural Science Foundation of Hunan Province |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/137029]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Yang, Xiao |
| 作者单位 | 1.Xiangtan Univ, Coll Environm & Resources, Xiangtan 411105, Peoples R China 2.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hong Kong, Peoples R China 3.Chinese Acad Sci, Key Lab Land Surface Pattern & Simulat, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Hongbo,Zou, Mei,Zhou, Yaoyu,et al. Monitoring the nitrous oxide emissions and biological nutrient removal from wastewater treatment: Impact of per fl uorooctanoic acid[J]. JOURNAL OF HAZARDOUS MATERIALS,2021,402:12. |
| APA | Chen, Hongbo,Zou, Mei,Zhou, Yaoyu,Zeng, Long,&Yang, Xiao.(2021).Monitoring the nitrous oxide emissions and biological nutrient removal from wastewater treatment: Impact of per fl uorooctanoic acid.JOURNAL OF HAZARDOUS MATERIALS,402,12. |
| MLA | Chen, Hongbo,et al."Monitoring the nitrous oxide emissions and biological nutrient removal from wastewater treatment: Impact of per fl uorooctanoic acid".JOURNAL OF HAZARDOUS MATERIALS 402(2021):12. |
入库方式： OAI收割
来源：地理科学与资源研究所
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。