在堆肥过程中减少活性氧物种的温室气体排放
Xian Du1, Ruizhi Xing1, Ying Lin1
1Fujian Provincial Key Laboratory of Soil Environmental Health and Regulation, College of Resources and Environment, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
Bioresource technology
|May 31, 2024
概括
这项研究表明,在堆肥过程中增加活性氧物种 (ROS) 显著减少温室气体排放. 增强的ROS生产为便管理中减缓气候变化提供了一个新的战略.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 土壤科学 土壤科学
背景情况:
- 活性氧物种 (ROS) 在堆肥过程中参与有机物转化.
- 在堆肥过程中ROS对温室气体 (GHG) 排放的影响尚不清楚.
- 了解ROS的作用对于优化堆肥和缓解气候变化至关重要.
研究的目的:
- 调查增强反应性氧物种 (ROS) 生产对热友堆肥过程中温室气体 (GHG) 排放的影响.
- 为了确定ROS是否会影响产生温室气体的微生物群落.
- 确定ROS作为控制堆肥中温室气体排放的关键因素.
主要方法:
- 进行了热友堆肥实验,并没有补充铁矿物质以提高ROS产量.
- 在整个堆肥过程中监测了温室气体排放 (例如,CO2,CH4,N2O).
- 进行了微生物社区分析,以评估相关微生物的丰富性.
主要成果:
- 与普通热友堆肥 (OTC) 相比,补充铁矿物质增加了ROS产量的1.38倍.
- 在铁矿物处理堆肥 (imTC) 中增强ROS生产显著降低了总体温室气体排放量45.12%.
- 在OTC和imTC之间没有观察到与温室气体生产相关的微生物群落的显著差异,这表明ROS的直接作用.
结论:
- 活性氧物种 (ROS) 在堆肥过程中减少温室气体排放方面发挥着至关重要的作用,特别是在最初的阶段.
- 通过补充铁矿物质来提高ROS生产,提供了一种有效的策略,以减轻堆肥牲畜和家禽便的温室气体排放.
- 这些发现为可持续的肥管理和气候变化缓解提供了新的见解和实际方法.
相关概念视频
00:46Bioremediation
18.2K
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.
18.2K
01:19Oxidation and Reduction of Organic Molecules
6.4K
Energy production within a cell involves many coordinated chemical pathways. Most of these pathways are combinations of oxidation and reduction reactions, which occur at the same time. An oxidation reaction strips an electron from an atom in a compound, and the addition of this electron to another compound is a reduction reaction. Because oxidation and reduction usually occur together, these pairs of reactions are called redox reactions.
The removal of an electron from a molecule, results in a...
The removal of an electron from a molecule, results in a...
6.4K
01:20Radical Autoxidation
2.1K
The oxidation of an organic compound in the presence of air or oxygen is called autoxidation. For example, cumene reacts with oxygen to form hydroperoxide. Autoxidation involves initiation, propagation, and termination steps. Many organic compounds are susceptible to autoxidation—especially ethers in the presence of oxygen, which form hydroperoxides. Even though this reaction is slow, old ether bottles contain small amounts of peroxide, which leads to laboratory explosions during ether...
2.1K
01:46Oxidative Cleavage of Alkenes: Ozonolysis
10.2K
In ozonolysis, ozone is used to cleave a carbon–carbon double bond to form aldehydes and ketones, or carboxylic acids, depending on the work-up.
Ozone is a symmetrical bent molecule stabilized by a resonance structure.
Ozone is a symmetrical bent molecule stabilized by a resonance structure.
10.2K
01:20Overview 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
02:12Enthalpy and Heat of Reaction
8.4K
Combustion, commonly known as burning, is a reaction in which a substance reacts with an oxidizing agent, which in most cases is molecular oxygen, to liberate energy in the form of heat, light, or sound. The heat of combustion is also known as the enthalpy of combustion. The energy released when one mole of a substance undergoes complete combustion at constant pressure is called molar heat of combustion. Combustion reactions are exothermic; that is, they release energy, and their ΔH sign...
8.4K