相关实验视频

Updated: Jun 5, 2025

Author Spotlight: Advancing Anaerobic Microbiota Research Using a Novel Respirometry Protocol

Author Spotlight: Advancing Anaerobic Microbiota Research Using a Novel Respirometry Protocol

Published on: April 26, 2024

从废水污泥发酵中增强中链脂肪酸的生产,使用零价值铁发酵

Tianru Lou¹, Yanan Yin¹, Jianlong Wang²

¹Laboratory of Environmental Technology, INET, Tsinghua University, Beijing, 100084, PR China.

|December 8, 2024

概括

零价值铁 (ZVI) 增强了从污水污泥中产生的中链脂肪酸 (MCFA). 最佳的ZVI剂量 (2-20g/L) 通过微生物丰富和改善代谢途径,提高了MCFA的产量和电子转移效率.

科学领域:

环境科学环境科学
生物技术是生物技术.
化学工程是化学工程的重要组成部分.

背景情况:

污水污泥发酵是资源回收的关键过程.
中链脂肪酸 (MCFA) 是一种有价值的平台化学物质.
优化发酵条件对于高效的MCFA生产至关重要.

研究的目的:

调查零价值铁 (ZVI) 剂量对从污水污泥中生产的MCFA的影响.
阐明ZVI对微生物群落和代谢途径影响的潜在机制.
确定最佳的ZVI剂量,以最大限度地提高MCFA和长链酒精 (LCAs) 的产量.

主要方法:

进行了批量发酵实验,使用不同的ZVI剂量 (0-50 g/L).
使用气相色谱分析了MCFA和LCA度.
使用高通量测序来评估微生物群落的组成.
通过基因表达和代谢物分析推断了代谢途径和电子转移机制.

主要成果:

在2-20g/L的ZVI添加剂显著提高了MCFA的产量.
20g/L (ZVI20) 的ZVI剂量最大化了MCFA和LCAs的产量,分别为4079.0 mg/L和93.1 mg/L.
通过ZVI处理,MCFA的电子传输效率和选择性分别提高了40%和25%以上.
观察到富含MCFA的产生细菌 (如Romboutsia,Paraclostridium) 和增强的细胞内/细胞外电子转移.
高ZVI剂量 (50g/L) 可能抑制了乙-CoA和ATP合成,减少了MCFA的产生.

结论:

零价值铁剂量极大地影响了从污水污泥发酵中产生的MCFA的产生.
最佳的ZVI剂量 (2-20 g/L) 促进微生物活动,并增强电子转移通路,以增加MCFA和LCA产量.
ZVI充当电子穿器,促进细胞外电子转移,并丰富参与MCFA合成的特定微生物群落.

关键词:

中链脂肪酸中链脂肪酸微生物社区的微生物社区.微生物新陈代谢分析污水污泥的污水污泥是污水中的污泥.没有价值的铁.

更多相关视频

Development of Sulfidogenic Sludge from Marine Sediments and Trichloroethylene Reduction in an Upflow Anaerobic Sludge Blanket Reactor

Development of Sulfidogenic Sludge from Marine Sediments and Trichloroethylene Reduction in an Upflow Anaerobic Sludge Blanket Reactor

Published on: October 15, 2015

Medium Preparation for the Cultivation of Microorganisms under Strictly Anaerobic/Anoxic Conditions

Medium Preparation for the Cultivation of Microorganisms under Strictly Anaerobic/Anoxic Conditions

Published on: August 15, 2019

相关概念视频

Environmental Applications of Microorganisms

Environmental Applications of Microorganisms

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...

Bioremediation

Bioremediation

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.

Microbial Nutrition

Microbial Nutrition

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...