相关实验视频
Updated: Jul 19, 2025

09:50
Electrochemically and Bioelectrochemically Induced Ammonium Recovery
Published on: January 22, 2015
12.8K
[通过生物电化学合进行增强的去除 anammox 和微生物群落的特征]
Lai Xie1,2, Min Yang1,2, Enzhe Yang1,2
1School of Hydraulic and Environmental Engineering, Changsha University of Science & Technology, Changsha 410114, Hunan, China.
Sheng wu gong cheng xue bao = Chinese journal of biotechnology
|August 16, 2023
概括
这项研究表明,生物电化学系统可增强无氧氨氧化 (anammox) 以去除. 施加的电压丰富了关键的微生物,通过物种间电子转移提高了去除率.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 电化学 电化学 电化学
背景情况:
- 废水处理需要有效的去除.
- 无氧氨氧化 (anammox) 是一个有前途的去除过程.
- 生物电化学系统为工艺改进提供了潜在的潜力.
研究的目的:
- 为了研究生物电化学增强 anammox 去除.
- 阐明一个合的anammox阴极系统中的脱机制.
- 评估应用电压对微生物社区结构和功能的影响.
主要方法:
- 一个双室微生物电解电池 (MEC) 的构建,用一个anammox阴极.
- 黑色化批次实验在不同总度 (200-400毫克/升) 的0.2V应电压下进行.
- 使用循环电压测量,电化学阻抗光谱和高通量测序进行了表征.
主要成果:
- 实现了高的总去除率: 96.9%±0.3% (200 mg/L),97.3%±0.4% (300 mg/L) 和99.0%±0.3% (400 mg/L). 总去除率为96.9%±0.3% (200 mg/L),97.3%±0.4% (300 mg/L) 和99.0%±0.3% (400 mg/L). 总去除率为96.9%±0.3% (200 mg/L),97.3%±0.4% (300 mg/L) 和99.0%±0.3% (400 mg/L). 总去除率为96.9%±0.3%.
- 阴极生物膜表现出显著的电化学活性.
- 应用电压丰富了脱细菌 (例如,丹尼特利提索马,Limnobacter) 和氨氧化细菌 (例如,Nitrosomonas europaea,Nitrospira),以及阿纳莫克斯细菌.
结论:
- 生物电化学系统有效地增强基于anammox的去除.
- 丰富电化学活性微生物 (氨氧化外电原体和脱电) 是至关重要的.
- 这些微生物之间增强的直接物种间电子转移提高了去除效率.
相关概念视频
Metabolism of Chemolithotrophs
45
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.
45
Environmental Applications of Microorganisms
61
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...
61
Inorganic Nitrogen Assimilation
48
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...
48
Bioremediation
19.0K
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.
19.0K
Overview of Nitrogen Metabolism
8.1K
Nitrogen is a very important element for life because it is a major constituent of proteins and nucleic acids. It is a macronutrient, and in nature, it is recycled from organic compounds and stored in the form of ammonia, ammonium ions, nitrate, nitrite, or nitrogen gas by many metabolic processes. Many of these metabolic processes are carried out only by prokaryotes.
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...
The largest pool of nitrogen available in the terrestrial ecosystem is gaseous nitrogen (N2) from the air, but this...
8.1K
Microbial Nutrition
71
Organisms exhibit remarkable metabolic diversity, categorized based on how they acquire energy and carbon. These strategies enable survival in various ecological niches and are essential for maintaining energy flow and nutrient cycling within ecosystems.Energy and Carbon SourcesOrganisms are classified as phototrophs or chemotrophs based on energy acquisition. Phototrophs use light as their energy source, while chemotrophs rely on oxidizing chemical compounds. Further differentiation arises...
71

