有效的去除途径和相应的微生物证据在潮流建造的湿地盐水处理的盐水处理
Manping Zhang1, Shanshan Sun2, Xushun Gu2
1School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, PR China; School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, PR China.
Environmental research
|July 6, 2023
概括
潮流构建的湿地有效地从盐水中去除氨. 像anammox和脱等微生物过程导致气损失,这对于了解河口污染控制至关重要.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 生态系统生态学生态学
背景情况:
- 人工潮湿地因盐水处理和它们在全球气循环中的作用而受到认可.
- 对于盐水处理的潮流构造湿地 (TF-CWs) 中的循环路径和损失机制的了解有限.
研究的目的:
- 调查处理盐水的TF-CW中的去除效率和微生物通路.
- 量化各种微生物过程对损失的贡献.
- 确定调节转换的关键微生物基因.
主要方法:
- 七个TF-CW的实验运行,盐度在0-30‰之间.
- 测量去除的效率 (,酸盐,总).
- 使用16S rRNA基因测序和功能基因的量化进行微生物社区分析.
主要成果:
- 实现了高氨-N去除效率 (∼90.3%),其中酸盐 (4.8-93.4%) 和总 (23.5-88.4%) 的去除率可变.
- 同时的anammox,DNRA,化和脱化被确定为关键的损失途径.
- 定量关系将特定的基因 (nxrA,hzsB,amoA,nosZ,narG,qnorB,nirS) 与和酸盐转化联系起来,以及整体的总动态.
结论:
- TF-CW 显示出从盐水中去除氨的巨大潜力.
- 了解微生物循环对于优化TF-CW在河口和沿海环境中的性能至关重要.
- 这项研究提供了TF-CW中转化机制的定量分子洞察力,有助于管理污染和预防藻类繁殖.
相关概念视频
Environmental Applications of Microorganisms
67
Microorganisms play a pivotal role in maintaining ecosystem balance by recycling essential elements such as carbon, nitrogen, and phosphorus, as well as supporting processes like bioremediation, wastewater treatment, and biofuel production.Microbes in Elemental CyclesIn the carbon cycle, microorganisms decompose organic matter, releasing carbon dioxide via aerobic respiration. This carbon dioxide is subsequently used by photosynthetic organisms to synthesize organic compounds, closing the...
67
Bioremediation
19.1K
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
19.1K
Metabolism of Chemolithotrophs
52
Chemolithotrophs are microorganisms that obtain energy by oxidizing inorganic molecules such as hydrogen gas (H₂), ammonia (NH₃), reduced sulfur compounds (H₂S, S²⁻), and ferrous iron (Fe²⁺). Unlike heterotrophic organisms that rely on organic carbon, chemolithotrophs transfer electrons from these inorganic donors to the electron transport chain (ETC), generating a proton motive force (PMF) that drives ATP synthesis through oxidative phosphorylation.
52
Inorganic Nitrogen Assimilation
49
Nitrogen is an essential element in biological systems, forming a crucial component of proteins, nucleic acids, and other cellular constituents. Many bacteria and archaea acquire nitrogen in the form of nitrate (NO₃⁻) or ammonia (NH₃), which are then assimilated into biomolecules through specific enzymatic pathways.Assimilatory Nitrate ReductionWhen nitrate enters the cell, it undergoes a two-step reduction process known as assimilatory nitrate reduction. Initially, the enzyme...
49


