在基于硫的建造湿地中素生产的特征和机制
Shuo Wang1, Haodong Hu1, Muhammad Tanveer1
1Shandong Key Laboratory of Water Pollution Control and Resource Reuse, School of Environmental Science & Engineering, Shandong University, Qingdao 266237, PR China.
Water research
|April 24, 2024
概括
使用硫基质建造的湿地显著增强了素 (PH3) 生产,这是循环的关键组成部分. 这一过程增加了可用的,改善了植物吸收和湿地效率.
科学领域:
- 环境科学 环境科学
- 生物地质化学生物地质化学
- 湿地生态学湿地生态学
背景情况:
- 素 (PH3) 是全球循环中至关重要的,但尚未得到充分研究的组成部分.
- 建筑湿地 (CWs) 是用于废水处理的工程系统,但它们内的PH3动态性尚不清楚.
- 研究CW中的PH3生产对于了解循环和优化CW性能至关重要.
研究的目的:
- 探索基于硫的CWs中的PH3生产的特征和机制.
- 为了确定硫基质对PH3产生的影响.
- 阐明涉及PH3形成的微生物和生化途径.
主要方法:
- 使用实验室规模的CW和批量实验.
- 测量包括PH3释放流量,溶解PH3度和矩阵绑定的PH3.
- 分析涉及将PH3生产与微生物基因 (dsrB) 和生物化学因素 (NADH) 相关联.
主要成果:
- 基于硫的CW显示PH3释放流的范围从0.86到1.88 ng·m−2·h−1.1.
- 溶解PH3是占主导地位的形式,度在2.73和4.08μg·L-1.1之间.
- 元素硫促进PH3的产生比pyrite更有效,在PH3,dsrB基因丰富度和NADH水平之间发现了显著的正相关性.
结论:
- 硫基基质显著增强CW中的PH3产量,可能是通过涉及dsrB和NADH的微生物途径.
- PH3转化增加了可用的 (Resin-P和NaHCO3-P) 21%,并提高了P吸附能力12%.
- 提高的可用性导致植物吸收增加了17%,为CW设计和管理提供了见解.
相关概念视频
The 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
The Sulfur Cycle
44.1K
Sulfur, an important element in the chemical makeup of proteins, is recycled through the atmosphere and aquatic and terrestrial environments. Found in the atmosphere as sulfur dioxide (SO2), sulfur is released by decaying organisms, weathered rocks, geothermal vents, volcanos, and burning fossil fuels. It is deposited into the ecosystem, cycled through the biotic community, and either released back into the atmosphere as gas or deposited in marine sediment for long-term storage and eventual...
44.1K
Preparation and Reactions of Sulfides
4.8K
Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
4.8K
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
Electrophilic Aromatic Substitution: Sulfonation of Benzene
6.0K
Sulfonation of benzene is a reaction wherein benzene is treated with fuming sulfuric acid at room temperature to produce benzenesulfonic acid. Fuming sulfuric acid is a mixture of sulfur trioxide and concentrated sulfuric acid.
6.0K
Gas Chromatography: Types of Detectors-II
368
In gas chromatography, different detectors are employed to meet specific analytical needs. These detectors are often categorized based on their detection mechanisms and the types of compounds they are best suited to analyze. Thermal Conductivity Detectors (TCD), Flame Ionization Detectors (FID), and Electron Capture Detectors (ECD) represent common categories, each with unique operating principles and applications. However, beyond these, several other detectors are designed for more specialized...
368


