Influence of Temperature on Biofilm Formation Mechanisms Using a Gravity-Driven Membrane (GDM) System: Insights from Microbial Community Structures and Metabolomics
文献类型：期刊论文
| 作者 | Li, Weihua ; Siddique, Muhammad Saboor; Graham, Nigel; Yu, Wenzheng
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| 刊名 | ENVIRONMENTAL SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2022-05-27 |
| 卷号 | 56期号:12页码:8908-8919 |
| ISSN号 | 0013-936X |
| 关键词 | EXTRACELLULAR POLYMERIC SUBSTANCES EPOXYEICOSATRIENOIC ACIDS OXYGEN CONCENTRATION ESCHERICHIA-COLI BACTERIA PERFORMANCE TECHNOLOGY PERMAFROST BIOREACTOR METABOLISM |
| 英文摘要 | A biofilm has a significant effect on water treatment processes. Currently, there is a lack of knowledge about the effect of temperature on the biofilm structure in water treatment processes. In this study, a gravity-driven membrane ultrafiltration system was operated with river feedwater at two temperatures (low, 4 degrees C; high, 25 degrees C) to explore the biofilm structure and transformation mechanism. The results showed that the difference in dissolved oxygen concentration might be one of the main factors regulating the structural components of the biofilm. A denser biofilm formation and reduced flux were observed at the lower temperature. The linoleic acid metabolism was significantly inhibited at low temperature, resulting in enhanced pyrimidine metabolism by Na+ accumulation. In addition, the biofilm at low temperature had a higher proportion of the metabolites of lipids and lipid-like molecules (11.25%), organic acids and derivatives (10.83%), nucleosides, nucleotides, and analogues (7.083%), and organoheterocyclic compounds (6.66%). These small molecules secrete more polysaccharides having C=O and O=C=O functional groups, which intensified the resistance of the biofilm. Furthermore, the upregulation pathway of pyrimidine metabolism also increased the risk of urea accumulation at low temperature. Limnohabitans , Deinococcus , Diaphorobacter , Flavobacterium , and Pseudomonas were identified as the principal microorganisms involved in this metabolic transformation. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47862]  |
| 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 |
| 通讯作者 | Yu, Wenzheng |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Zool, State Key Lab Integrated Management Pest Insects, Beijing 100101, Peoples R China 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Key Lab Drinking Water Sci & Technol, State Key Lab Environm Aquat Chem, Beijing 100085, Peoples R China 4.Imperial Coll London, Dept Civil & Environm Engn, London SW7 2AZ, England |
| 推荐引用方式 GB/T 7714 | Li, Weihua,Siddique, Muhammad Saboor,Graham, Nigel,et al. Influence of Temperature on Biofilm Formation Mechanisms Using a Gravity-Driven Membrane (GDM) System: Insights from Microbial Community Structures and Metabolomics[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2022,56(12):8908-8919. |
| APA | Li, Weihua,Siddique, Muhammad Saboor,Graham, Nigel,&Yu, Wenzheng.(2022).Influence of Temperature on Biofilm Formation Mechanisms Using a Gravity-Driven Membrane (GDM) System: Insights from Microbial Community Structures and Metabolomics.ENVIRONMENTAL SCIENCE & TECHNOLOGY,56(12),8908-8919. |
| MLA | Li, Weihua,et al."Influence of Temperature on Biofilm Formation Mechanisms Using a Gravity-Driven Membrane (GDM) System: Insights from Microbial Community Structures and Metabolomics".ENVIRONMENTAL SCIENCE & TECHNOLOGY 56.12(2022):8908-8919. |
入库方式： OAI收割
来源：生态环境研究中心
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