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Production of abiotic or biogenic hydrocarbons on rock particles in the presence of HO and carbon compounds.
Sci Rep
January 2025
Climate and Environmental Institute, Korea Institute of Science and Technology, Hwarangno 14-gil 5, Seongbuk-gu, Seoul, 02792, Republic of Korea.
Abiotic H and hydrocarbons are found in fluids discharged from ultramafic-hosted hydrothermal vents. Beneath the hydrothermal vents, abiotic H and hydrocarbons can be formed by serpentinization reactions and Fischer-Tropsch-type hydrocarbon-forming reactions, respectively, over ultramafic rocks. However, the source rocks that form abiotic H and hydrocarbons may extend to broader subsurface rocks.
View Article and Find Full Text PDFActive phytoextraction of toluene shifts the microbiome and enhances degradation capacity in hybrid poplar.
J Environ Manage
January 2025
School of Environmental Sciences, University of Guelph, 50 Stone Rd E, Guelph, ON, N1H 2W1, Canada. Electronic address:
Hybrid poplars are widely recognized for their effectiveness in remediating subsurface aromatic hydrocarbon contaminants, including benzene, toluene, ethylbenzene, and xylene isomers (BTEX). While BTEX compounds are frequently found in the transpiration streams of poplars at contaminated sites, the microbial dynamics within these trees, particularly in response to hydrocarbon exposure, remain underexplored. This study utilized high-throughput amplicon sequencing to investigate the trunk microbiome in hybrid poplars at a field-scale toluene phytoremediation site.
View Article and Find Full Text PDFInsights into the Relationship between Temperature Variation and NAPL Removal during In Situ Thermal Remediation of Soil in the Presence of NAPL-Water Co-boiling: A Two-Dimensional Visualized Sandbox Study.
Environ Sci Technol
December 2024
Institute of Thermal Science and Power Systems, School of Energy Engineering, Zhejiang University, Hangzhou 310027, China.
Article Synopsis
- Thermal remediation is an effective method for cleaning up sites contaminated with nonaqueous phase liquids (NAPL) by heating the soil, utilizing a process called co-boiling at the water-NAPL interface to lower boiling points and conserve energy.
- Determining the optimal heating duration is difficult due to the invisibility of NAPL underground, which can lead to unnecessary energy use, influenced by the initial NAPL size and location relative to the heat source.
- This study uses a two-dimensional sandbox with real-time image processing and temperature sensors to monitor NAPL removal and temperature changes, ultimately proposing better sensor positioning and establishing a connection between temperature increase and NAPL removal efficiency.
Experimental Investigation of the Impact of Mixed Wettability on Pore-Scale Fluid Displacement: A Microfluidic Study.
ACS Appl Mater Interfaces
December 2024
Physical Science and Engineering Division (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia.
Understanding rock wettability is crucial across various fields including hydrology, subsurface fluid storage and extraction, and environmental sciences. In natural subsurface formations like carbonate and shale, mixed wettability is frequently observed, characterized by heterogeneous regions at the pore scale that exhibit both hydrophilic (water-wet) and hydrophobic (oil-wet) characteristics. Despite its common occurrence, the impact of mixed wettability on immiscible fluid displacement at the pore scale remains poorly understood, creating a gap in effective modeling and prediction of fluid behavior in porous media.
View Article and Find Full Text PDFExperimental study on the piezoresistive effect of Mn-Cu alloy under high temperature and pressure and its application.
Rev Sci Instrum
December 2024
Institute of Geology, China Earthquake Administration, Beijing 100029, China.
Large volume presses are used to simulate extreme environments within the Earth, enabling the investigation of the physical properties of subsurface materials. However, existing pressure calibration methods do not facilitate in situ observation of continuously varying chamber pressures. The Mn-Cu alloy, known for its piezoresistive properties, has not been extensively studied under ultra-high temperatures.
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