对未和柴油污染土壤对土壤水相互作用的热效应的宏观和分子规模评估
Wei Wei1, Mingli Wei2, Yuan Li3
1State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; University of Chinese Academy of Sciences, Beijing 100049, China; IRSM-CAS/HK Poly U Joint Laboratory on Solid Waste Science, Wuhan 430071, China; Hubei province Key Laboratory of Contaminated Sludge and Soil Science and Engineering, Wuhan 430071, China.
The Science of the total environment
|August 23, 2024
概括
土壤中的柴油污染物最初会减少水的保留,但在更高的温度下形成保护膜,增强水的结合. 这种保护层减轻了污染的高土壤中因温度而引起的水损失.
科学领域:
- 环境工程 环境工程
- 土壤科学 土壤科学
- 地质化学 地质化学
背景情况:
- 了解未和柴油污染土壤中的土壤与水的相互作用,对于有效的热修复策略至关重要.
- 污染转移动态受到污染土壤的矩阵吸收和保留水的能力的重大影响.
研究的目的:
- 为了研究柴油污染对不和高的矩阵吸收和保持水分的影响.
- 在受污染土壤的热条件下阐明控制土壤与水相互作用的机制.
- 用分子动力学模拟来验证实验发现.
主要方法:
- 在不和柴油污染的考林中测量矩阵吸收.
- 在不同的热条件和污染物度下进行分子动力学模拟.
- 里叶变换红外光谱学用于分析表面相互作用.
主要成果:
- 柴油度的增加最初会减少由于电化学性质和孔状特征的改变而导致的水留.
- 污染物在考利尼特上形成保护膜,作为液体桥梁,防止高温下水流失.
- 分子动力学模拟证实了随着污染物度的增加而增强的高利尼特-水相互作用能量,增强了保持水分.
结论:
- 柴油污染物在考利尼特上形成的保护膜显著影响了土壤与水的相互作用和水容量.
- 这种涂层降低了水保持对温度变化的敏感性,这是热修复的关键因素.
- 这些发现为污染现场的热处理过程中对污染物行为和土壤特性提供了关键的见解.
相关概念视频
Bioremediation
23.1K
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.
23.1K
Responses to Drought and Flooding
12.4K
Water plays a significant role in the life cycle of plants. However, insufficient or excess of water can be detrimental and pose a serious threat to plants.
12.4K
Soil Microbial Ecology
55
Soil microbial ecology is defined by highly diverse, spatially structured communities that drive nutrient cycling, organic matter turnover, and overall ecosystem stability. Although a gram of soil can contain thousands of bacterial and archaeal taxa, the ecological processes they mediate are even more crucial for sustaining terrestrial life.Microhabitats and NichesSoil is a heterogeneous mixture of minerals, organic matter, water, and air. Microbes inhabit distinct microhabitats formed by...
55
Microbial Bioremediation of Hydrocarbons
83
Bioremediation is an environmentally sustainable process that employs living organisms—primarily microorganisms—to degrade or neutralize pollutants from contaminated environments. In oil spills and hydrocarbon pollution, bioremediation involves the use of hydrocarbon-degrading bacteria to transform toxic compounds into less harmful substances. This approach leverages natural microbial metabolic processes and is considered both cost-effective and ecologically favorable compared to...
83


