相关实验视频

Updated: Jun 2, 2025

Measurement of the Potential Rates of Dissimilatory Nitrate Reduction to Ammonium Based on 14NH4+/15NH4+ Analyses via Sequential Conversion to N2O

Measurement of the Potential Rates of Dissimilatory Nitrate Reduction to Ammonium Based on 14NH4+/15NH4+ Analyses via Sequential Conversion to N2O

Published on: October 7, 2020

混合的anammox细菌在含有propionate的废水中超过了模拟缩和脱细菌的竞争力

Xuejiao Qiao¹, Liyu Zhang¹, Tugui Yuan²

¹School of Environment and Energy, Peking University Shenzhen Graduate School, Shenzhen 518055, China.

Bioresource technology

|January 15, 2025

概括

混合营养的anammox细菌使用propionate来回收氨,增强去除. 这些细菌具有高效的新陈代谢,在低碳转废水处理中具有竞争优势.

科学领域:

环境微生物学环境微生物学
废水处理技术废水处理技术
生物地质化学循环的过程

背景情况:

有机碳影响无氧氨氧化 (anammox) 中的去除.
酸对混合性形细菌的具体影响尚不清楚.
了解这些机制对于优化废水处理至关重要.

研究的目的:

在长期 propionate 暴露下研究Candidatus Brocadia sapporoensis (AMXB) 的代谢途径和行为变化.
阐明酸在混合的 anammox 过程中的作用.
确定AMXB在低C/N环境中的竞争优势.

主要方法:

基因组解析的元基因组分析.
长期暴露的实验与混合营养的anammox细菌.
代谢途径的重建和分析.

主要成果:

AMXB利用酸作为电子捐赠体,通过分散性酸盐降解 (DNRA) 途径将酸盐转化为.
回收的氨维持了anammox工艺,提高了去除效率.
由于其高能效的propionate代谢,AMXB表现出比DNRA和脱细菌更有效的生长.

结论:

混合营养的anammox细菌在低C/N废水中具有竞争优势,这是由于其高效的propionate代谢.
该DNRA途径在氨回收中发挥着关键作用,促进了的去除.
这项研究提供了关于加强废水处理中提取的见解.

关键词:

这种细菌是DNRA细菌.脱化是为了使它脱.混合养的阿纳莫克斯细菌是混合养的.移除的方法移除的方法 propionate 的暴露 propionate 的暴露

更多相关视频

Estimating Sediment Denitrification Rates Using Cores and N2O Microsensors

Estimating Sediment Denitrification Rates Using Cores and N2O Microsensors

Published on: December 6, 2018

Continuously-stirred Anaerobic Digester to Convert Organic Wastes into Biogas: System Setup and Basic Operation

Continuously-stirred Anaerobic Digester to Convert Organic Wastes into Biogas: System Setup and Basic Operation

Published on: July 13, 2012

相关概念视频

Overview of Nitrogen Metabolism

Overview of Nitrogen Metabolism

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...

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.

The Nitrogen Cycle

The Nitrogen Cycle

Nitrogen atoms, present in all proteins and DNA, are recycled between abiotic and biotic components of the ecosystem. However, the primary form of nitrogen on Earth is nitrogen gas, which cannot be used by most animals and plants. Thus, nitrogen gas must first be converted into a usable form by nitrogen-fixing bacteria before it can be cycled through other living organisms. The use of nitrogen-containing fertilizers and animal waste products in human agriculture has greatly influenced the...