地质丰富地下水由于无氧甲氧化-合铁 (III) 氧化物减少
Yao Du1,2, Yaojin Xiong1,2, Yamin Deng1,2
1Key Laboratory of Groundwater Quality and Health (China University of Geosciences), Ministry of Education, Wuhan 430078, China.
Environmental science & technology
|April 26, 2024
概括
地质在地下水中的积累与甲循环有关. 铁中介的无氧甲氧化 (Fe-AMO) 显著增强了含水层中的丰富.
科学领域:
- 环境科学 环境科学
- 地质化学 地质化学
- 微生物学 微生物学
背景情况:
- 地质在地下水中的积累是一个日益严重的环境问题.
- 这一过程在甲性条件下与铁 (Fe) 和有机物有关.
- 厌氧甲氧化 (AMO) 在丰富中的特定作用尚不清楚.
研究的目的:
- 调查丰富和地下水中甲循环之间的关系.
- 阐明厌氧甲氧化 (AMO) 的作用,特别是Fe(III) 介导的AMO (Fe-AMO),在动力学中的作用.
- 了解驱动水层积的微生物机制.
主要方法:
- 碳同位素 (DIC,CO2,CH4) 和铁同位素的全面分析.
- 微生物群落和功能的量化,包括pmoA基因丰富度.
- 冗余分析以确定影响丰富的关键因素.
主要成果:
- 的度与Fe(II),δ56Fe和δ13C-DIC正相关,表明FeOOH的还原性溶解.
- 在pmoA基因丰富度,Fe度和δ13C-CH4之间的正相关性表明Fe-AMO的重要性.
- 涉及像Candidatus Methanoperedens这样的微生物的Fe-AMO过程被确定为丰富的促进者.
结论:
- Fe-AMO在地下水中的丰富中发挥着重要作用.
- 微生物群落,特别是与Fe-AMO相关的微生物群落,是动态的关键驱动因素.
- 这项研究为地下环境中的循环提供了新的见解.
更多相关视频
00:13Using Flexible Gold-Titanium Reaction Cells to Simulate Pressure-Dependent Microbial Activity in the Context of Subsurface Biomining
Published on: October 5, 2019
6.7K
07:31Author Spotlight: Designing Simple and Inexpensive Techniques to Grow Methane-Oxidizing Bacteria in the Laboratory
Published on: September 6, 2024
934
相关概念视频
01:21The Phosphorus Cycle
36.8K
Unlike carbon, water, and nitrogen, phosphorus is not present in the atmosphere as a gas. Instead, most phosphorus in the ecosystem exists as compounds, such as phosphate ions (PO43-), found in soil, water, sediment and rocks. Phosphorus is often a limiting nutrient (i.e., in short supply). Consequently, phosphorus is added to most agricultural fertilizers, which can cause environmental problems related to runoff in aquatic ecosystems.
36.8K
00:46Bioremediation
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
04:01Factors Affecting Solubility
33.4K
Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Chȃtelier’s principle. Consider the dissolution of silver iodide:
33.4K