主流部分化-亚纳摩克斯工艺未来发展的潜在方向:氧化氨的古生物作为提供酸盐的新功能微生物
Kehuan Guo1, Dong Li1, Tongyao Hao1
1Key Laboratory of Water Science and Water Environment Recovery Engineering, Beijing University of Technology, Beijing 100123, China.
Bioresource technology
|March 18, 2024
概括
氨氧化古生物 (AOA) 显示出低温废水处理的前景,提供稳定的化物生产和增强的氨去除. 本综述探讨了在部分化-anammox过程中用AOA替换氨氧化细菌 (AOB) 的策略.
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 生物地质化学循环
背景情况:
- 与氨氧化细菌 (AOB) 相比,氨氧化古细菌 (AOA) 显示出优越的低温活性和更高的对氧和氨的亲和力.
- 由于对氨的亲和力较低,AOA对冲击负荷的耐受性更强,并且与无氧氨氧化 (anammox) 的融合更好.
- 目前基于氨氧化细菌 (AOB) 的部分化-亚纳摩克斯 (PN-A) 工艺在主流废水处理中面临局限性.
研究的目的:
- 综合审查AOA在为废水处理提供酸盐方面的潜力和重要性.
- 概述在PN-A流程中用AOA取代AOB的策略和影响因素.
- 探索AOA与anammox工艺的合方法和关键影响.
主要方法:
- 文献综述总结了有关AOA和PN-A过程的现有研究.
- 对化物生产和氨去除相关的AOA特征的分析.
- 探索AOA-anammox合机制和影响因素.
主要成果:
- AOA促进稳定酸盐生产和深度去除低氨,同时抑制酸盐氧化细菌.
- 在冲击负载条件下,AOA的氨耐受性提高了PN-A工艺稳定性.
- 将AOA与anammox有效合是可行的,并且比基于AOB的系统提供了优势.
结论:
- 对于主流PN-A工艺来说,AOA是一个显著的进步,特别是在低温环境中.
- 对AOA实施和AOA-anammox合的策略对于流程优化至关重要.
- 拟议的基于AOA的自营化/脱化工艺旨在提高废水质量和工艺稳定性.
相关概念视频
Overview of Nitrogen Metabolism
7.9K
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...
7.9K
Bioremediation
18.3K
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.
18.3K
Preparation of Amines: Alkylation of Ammonia and Amines
3.3K
Alkylation is one of the methods used to prepare amines. Direct alkylation of ammonia or a primary amine with an alkyl halide gives polyalkylated amines along with a quaternary ammonium salt through successive SN2 reactions. This process of making the quaternary salt through the direct alkylation method is called exhaustive alkylation.
Each alkylation step makes the nitrogen center more nucleophilic, which triggers successive alkylations until a quaternary ammonium salt is formed. Considering...
Each alkylation step makes the nitrogen center more nucleophilic, which triggers successive alkylations until a quaternary ammonium salt is formed. Considering...
3.3K
Comparative Excretory Systems
19.3K
Animals have evolved different strategies for excretion, the removal of waste from the body. Most waste must be dissolved in water to be excreted, so an animal’s excretory strategy directly affects its water balance.
19.3K
2° Amines to N-Nitrosamines: Reaction with NaNO2
4.2K
Secondary amines react with nitrous acid to form N-nitrosamines, as depicted in Figure 1. Nitrous acid, a weak and unstable acid, is formed in situ from an aqueous solution of sodium nitrite and strong acids, such as hydrochloric acid or sulfuric acid, in cold conditions. In the presence of an acid, the nitrous acid gets protonated. The subsequent loss of water results in the formation of the electrophile known as nitrosonium ion.
4.2K


