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Updated: Jun 30, 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

源影响了comammox细菌与有氧化剂的相互作用

Katherine Jeanne Vilardi¹, Juliet Johnston², Zihan Dai²

¹Department of Civil and Environmental Engineering, Northeastern University, Boston, Massachusetts, USA.

Microbiology spectrum

|March 21, 2024

概括

康马莫克斯Nitrospira的丰富性和多样性受到源和度的影响. 尿素丰富有利于comammoxNitrospira,而高氨量会降低它们,影响化剂相互作用.

科学领域:

环境微生物学环境微生物学
生物地质化学循环是什么
污水处理污水处理污水处理

背景情况:

在不同的生态系统中,Comammox Nitrospira与法定化剂共存.
了解化剂相互作用对于的生物转化至关重要.
化对于处理工程系统中的污染至关重要.

研究的目的:

调查源和可用性如何影响comammoxNitrospira和正规化剂之间的相互作用.
评估氨和尿素对连续流反应堆中化社区的影响.
了解调节工程生态系统中化剂丰度和活动的环境因素.

主要方法:

利用连续流柱反应器来模拟环境条件.
用氨或尿素在不同度 (1, 2 和 4 mg-N/L) 的反应器.
监测的物种组成,化剂的丰度和社区结构.

主要成果:

源和度显著改变了物种组成和化剂的丰度.
随着尿素的可用性增加,Commmox Nitrospira的丰度和多样性增加,但随着氨度的增加,其数量下降.
在氨养系统中观察到comammoxNitrospira和酸盐氧化剂之间的负相关性,但在尿素养系统中没有.

结论:

源和可用性是决定comammoxNitrospira与其他化剂相互作用的关键因素.
尿素丰富可以通过利用尿解活性来缓解氨抑制来支持comammoxNitrospira.
这些发现为改善生态系统中管理提供了对调节化器社区的见解.

关键词:

氨的抑制抑制氨的抑制作为一个comammox.化剂的化剂尿素 urea 的使用方法

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