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Updated: Jun 27, 2025

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如何开发一种生物基矿采矿策略,以满足海洋沉积物的需要:释放无氧释放的原生微生物过程,以释放无氧

Ece Kendir Cakmak¹, Chen Chen², Maria Cuartero³

¹Department of Industrial Biotechnology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, AlbaNova University Center, SE- 11421, Stockholm, Sweden; Department of Chemical Engineering, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden; Department of Environmental Engineering, Hacettepe University, Ankara, 06800, Turkey.

|April 30, 2024

概括

这项研究研究了使用挥发性脂肪酸 (VFA) 从波罗的海沉积物中释放的无氧. 较高的VFA度增加了的释放,pH值和时间是重要的因素.

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:

波罗的海等海洋环境中的缩导致在沉积物中的积累.
厌氧条件可以触发沉积物中的释放,加剧过度缩.
了解影响无氧释放的因素对于管理营养循环至关重要.

研究的目的:

为了检查波罗的海沉积物中 (P) 的无氧释放.
为了研究挥发性脂肪酸 (VFA),温度,pH和混合对P的释放的影响.
为了确定硫酸盐减少细菌 (SRB) 在无氧释放中的作用.

主要方法:

使用两个波罗的海沉积物 (B和F) 进行批量生物反应器实验.
废物衍生的挥发性脂肪酸 (VFA) 的初始度变化 (1000-10000 mg COD/L).
测试不同的温度 (20-35°C),pH值 (5.5,7.0,8.5) 和混合条件.
对,硫酸盐和微生物群体组成 (SRB) 的分析.

主要成果:

观察到显著的P释放,高达15.85 mg/L的PO4-P对于沉积物B在10000 mg的COD/LVFA.
较低的VFA度 (1000毫克COD/L) 导致最大P释放量为4.4毫克/L (沉积物B) 和3.5毫克/L (沉积物F).
操作时间和pH值是影响P释放的统计学上显著的因素 (p<0.05);混合不显著.
硫酸盐的减少是广泛的,Desulfomicobiaceae主导SRB,这表明它们在无氧P释放中的重要性.

结论:

挥发性脂肪酸可以刺激波罗的海沉积物中无氧的释放.
在无氧条件下,pH值和运行时间是控制释放的关键参数.
减少硫酸盐的细菌在无氧释放机制中起着关键作用.
研究结果为在环保环境中潜在的矿开采策略提供了洞察力.

关键词:

无氧沉积物的沉积物波罗的海波罗的海波罗的海欧洲化是什么意思?释放可以释放.废弃物衍生的碳来源来源是废弃物.

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相关概念视频

The Phosphorus Cycle

The Phosphorus Cycle

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.

Bioremediation

Bioremediation

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.