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Reactivity of Wet scCO toward Reservoir and Caprock Formations under Elevated Pressure and Temperature Conditions: Implications for CCS and CO-Based Geothermal Energy Extraction.
Energy Fuels
January 2025
Geothermal Energy and Geofluids Group, Institute of Geophysics, Department of Earth and Planetary Sciences, ETH Zurich, Zurich 8092, Switzerland.
Carbon capture and storage (CCS) and CO-based geothermal energy are promising technologies for reducing CO emissions and mitigating climate change. Safe implementation of these technologies requires an understanding of how CO interacts with fluids and rocks at depth, particularly under elevated pressure and temperature. While CO-bearing aqueous solutions in geological reservoirs have been extensively studied, the chemical behavior of water-bearing supercritical CO remains largely overlooked by academics and practitioners alike.
View Article and Find Full Text PDFSpatiotemporal distribution of marine aerosols and gaseous species over the North Pacific Ocean.
Sci Total Environ
January 2025
Department of Environmental Science and Engineering, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Republic of Korea; Research Center for Strategic Solutions for Environmental Blindspots in the Interest of Society, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul 03760, Republic of Korea. Electronic address:
Observational studies of marine aerosols are essential for understanding the global aerosol budget and its environmental impacts. This study presents simultaneous in-situ measurements of major ionic components (Cl, NO, SO, NH, K, Ca, Na, and Mg) in aerosols and gaseous species (HCl, HNO, HONO, SO, and NH) over the North Pacific Ocean from July 4 to 15 and September 19 to October 3, 2022. Using high temporal resolution instruments aboard the Republic of Korea's icebreaker research vessel Araon, this study aimed to (1) report the spatial and temporal distributions of aerosols and gaseous species, (2) estimate the source contributions of continental anthropogenic pollutants, and (3) assess the influence of aerosol chemical composition and gaseous species on aerosol acidity and water content.
View Article and Find Full Text PDFAssessment of geochemistry and irrigation suitability of the River Ganga, Varanasi, India: PCA reduction for water quality index and health risk evaluation.
Environ Sci Pollut Res Int
January 2025
Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, 221005, India.
Surface water chemistry of the River Ganga at Varanasi was analyzed at 10 locations over 3 years (2019-2021) across pre-monsoon, monsoon, and post-monsoon seasons. The study aimed to assess water parameters using principal component analysis (PCA), calculate the water quality index (WQI), determine processes governing water chemistry, evaluate irrigation suitability, and estimate non-carcinogenic health risks. The physical parameters measured included pH (8.
View Article and Find Full Text PDFPredicting the location of coordinated metal ion-ligand binding sites using geometry-aware graph neural networks.
Comput Struct Biotechnol J
December 2024
Department of Electrical Engineering and Computer Science, Bond Life Sciences Center, University of Missouri, Columbia, MO, USA.
More than 50 % of proteins bind to metal ions. Interactions between metal ions and proteins, especially coordinated interactions, are essential for biological functions, such as maintaining protein structure and signal transport. Physiological metal-ion binding prediction is pivotal for both elucidating the biological functions of proteins and for the design of new drugs.
View Article and Find Full Text PDFFormation Water Genesis Mechanism of Deep Tight Sandstone Gas Reservoirs in the Southern Ordos Basin and Its Indication for Development.
ACS Omega
January 2025
School of Petroleum Engineering, Xi'an Shiyou University, Xi'an, Shaanxi 710016, China.
By analyzing the chemical characteristics of the formation water in the tight sandstone reservoirs of the P2x8 and P1s1 in the southern Ordos Basin, combined with rock mineral composition, reservoir physical properties, and well gas testing data, the genesis mechanism of formation water and its guiding role in gas reservoir development were discussed. The results show that the formation water is derived from the mixture of syngenetic seawater and meteoric water and has undergone remarkable modification by water-rock interactions, showing characteristics of Ca enrichment and Mg and SO depletion. The albitization of plagioclase in reservoir rock components causes Ca excess and Na deficiency in formation water, while the chloritization of albite leads to the increase of Na.
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