Microbial responses to the use of NaClO in sediment treatment
文献类型：期刊论文
| 作者 | Li, Kun ; Ye, Tingming; Zhang, Wang; Peng, Jianfeng; Bai, Yaohui; Qi, Weixiao; Liu, Huijuan
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| 刊名 | FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
 |
| 出版日期 | 2021-04 |
| 卷号 | 16期号:2页码:- |
| 关键词 | Sediment chlorination Substance mobility Microbial response Community composition Function |
| ISSN号 | 2095-2201 |
| 英文摘要 | Chlorine is often used in algal removal and deodorization of landscape waters, and occasionally used as an emergency treatment of heavily polluted sediments. However, the ecological impact of this practice has not been fully studied and recognized. In this study, NaClO at 0.1 mmol/g based on dry weight sediment was evenly mixed into the polluted sediment, and then the sediment was incubated for 150 days to evaluate its microbial effect. Results showed that NaClO addition enhanced the release of TOC, TN, Cr and Cu from the sediment. The microbial richness in the examined sediment decreased continuously, and the Chao1 index declined from 4241 to 2731, in 150 days. The microbial community composition was also changed. The abundance of Proteobacteria and Bacteroidetes increased to 54.8% and 4.2% within 7 days compared to the control, and linear discriminant analysis (LDA) showed gram-negative bacteria and aerobic bacteria enriched after chlorination. The functional prediction with PICRUSt2 showed the functions of the microbial community underwent major adjustments, and the metabolic-related functions such as carbon metabolism, including pyruvate and methane metabolisms were significantly inhibited; besides, 15 out of 22 analyzed key enzymes involved in C cycling and 6 out of 12 key enzymes or genes involved in N cycling were strongly impacted, and the enzymes and genes involved in carbon degradation and denitrification showed remarkable downregulation. It can be concluded that chlorination posed a seriously adverse effect on microbial community structure and function. This study deepens the understanding of the ecological effects of applying chlorine for environmental remediation. |
| WOS研究方向 | Engineering, Environmental ; Environmental Sciences |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/46236]  |
| 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.China Univ Min & Technol, Beijing 100083, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Tsinghua Univ, Sch Environm, Ctr Water & Ecol, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100084, Peoples R China 4.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Drinking Water Sci & Technol, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Kun,Ye, Tingming,Zhang, Wang,et al. Microbial responses to the use of NaClO in sediment treatment[J]. FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING,2021,16(2):-. |
| APA | Li, Kun.,Ye, Tingming.,Zhang, Wang.,Peng, Jianfeng.,Bai, Yaohui.,...&Liu, Huijuan.(2021).Microbial responses to the use of NaClO in sediment treatment.FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING,16(2),-. |
| MLA | Li, Kun,et al."Microbial responses to the use of NaClO in sediment treatment".FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING 16.2(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
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