相关实验视频

Updated: Jul 4, 2025

Calibrated Passive Sampling - Multi-plot Field Measurements of NH3 Emissions with a Combination of Dynamic Tube Method and Passive Samplers

Calibrated Passive Sampling - Multi-plot Field Measurements of NH3 Emissions with a Combination of Dynamic Tube Method and Passive Samplers

Published on: March 21, 2016

一种低技术,低成本的方法来捕获点源氨排放量及其作为肥的潜在用途

Nicholas Cowan¹, Daniel Ashwood², Julia Drewer¹

¹UK Centre for Ecology and Hydrology, Bush Estate, Midlothian, United Kingdom.

|January 31, 2024

概括

这项研究表明,一种低成本的方法可以从便中捕获氨 (NH3),将其转化为可用的肥. 这种技术可以减少农民的成本和对矿物肥的依赖.

科学领域:

农业科学农业科学
环境化学环境化学
可持续农业可持续农业

背景情况:

化肥成本上升对全球农民产生了影响.
农业活动,特别是便管理,导致大量的污染.
来自农业来源的氨 (NH3) 排放有助于环境退化.

研究的目的:

评估一种低成本,低技术的方法来捕获来自肥的NH3排放.
评估使用捕获的NH3作为各种植物类型的肥料的可行性.
探索将捕获的NH3转化为植物可用的形式的方法.

主要方法:

采用水柱泡技术,从来自肥的空气中擦除NH3.
测试了不同的擦洗溶液,包括酸,酸,混合物和脱离离子水.
捕获的溶液应用于灌草和水生植物 (Taxiphyllum Barbieri,Salvinia auriculata),以评估产量和植物健康.

主要成果:

通过使用简单的泡泡系统,成功地从肥中捕获了氨 (NH3).
捕获的NH3可以转化为以酸盐为基础的溶液,模仿酸等常见肥料.
随着所有捕获的氨溶液,化草的产量显著增加.
水生植物对高 (NH4+) 度表现出敏感性,Salvinia auriculata因仅含的溶液而受损.

结论:

从农业点源捕获低技术的NH3是可行的.
捕获的可以储存并用作肥料,减少对昂贵的矿物肥料的依赖.
需要仔细应用,因为不同的植物类型对的度有不同的容忍度.

更多相关视频

Ammonia Synthesis at Low Pressure

Ammonia Synthesis at Low Pressure

Published on: August 23, 2017

Automated, High-resolution Mobile Collection System for the Nitrogen Isotopic Analysis of NOx

Automated, High-resolution Mobile Collection System for the Nitrogen Isotopic Analysis of NOx

Published on: December 20, 2016

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...

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...

Atomic Absorption Spectroscopy: Atomization Methods

Atomic Absorption Spectroscopy: Atomization Methods

Atomic Absorption Spectroscopy (AAS) atomizes samples through flame atomization or electrothermal atomization. Flame atomization typically involves a nebulizer and spray chamber assembly to combine the sample with a fuel–oxidant mixture, creating a fine aerosol mist that enters a burner. Typically, the fuel and oxidant are combined in an approximately stoichiometric ratio. However, for atoms that are easily oxidized, a fuel-rich mixture may be more advantageous. Only about 5% of the...