A5052331807- CO2 Sequestration and Geologic Interactions
- Geological and Geochemical Analysis
- Methane Hydrates and Related Phenomena
- Geological Formations and Processes Exploration
- Hydrocarbon exploration and reservoir analysis
- Paleontology and Stratigraphy of Fossils
- Geochemistry and Geologic Mapping
- Geochemistry and Elemental Analysis
- High-pressure geophysics and materials
- Reservoir Engineering and Simulation Methods
- Phase Equilibria and Thermodynamics
- Innovative Microfluidic and Catalytic Techniques Innovation
- Isotope Analysis in Ecology
- Atmospheric Ozone and Climate
- Groundwater and Isotope Geochemistry
- Spectroscopy and Laser Applications
- Process Optimization and Integration
- Carbon Dioxide Capture Technologies
- Rock Mechanics and Modeling
- Geology and Paleoclimatology Research
- Metal Extraction and Bioleaching
- Clay minerals and soil interactions
- Advanced Power Generation Technologies
- Thermodynamic properties of mixtures
- Aquatic and Environmental Studies
UiT The Arctic University of Norway
2022-2024
Centre for Arctic Gas Hydrate, Environment and Climate
2023-2024
Virginia Tech
2019-2023
University of Pecs
2021
Eötvös Loránd University
2015-2017
Albite-spodumene pegmatites, which are remarkable resources of Li worldwide, may experience both magmatic-hydrothermal transition and sub-solidus hydrothermal alteration during their formation evolution. However, fluids involved in the different stages evolution a spodumene-bearing pegmatitic systems not well defined, especially at stage. In Lijiagou deposit, western Sichuan Province, fluid inclusions typical albite-spodumene pegmatite were studied to determine degree enrichment potential...
Abstract The Raman spectra of pure N 2 , CO and CH 4 were analyzed over the range 10 to 500 bars from −160°C 200°C (N ), 22°C 350°C (CO −100°C 450°C (CH ). At constant temperature, peak position, including more intense ( ν +), decreases (shifts lower wave number) with increasing pressure for all three gases entire temperature PT ) studied. pressure, position increases higher In contrast, first shows an increase in at followed by a decrease temperature. inflection which trend reverses is...
The demand for responsibly sourced cobalt has increased dramatically as a result of the global transition to 'fossil-free' electromobility. However, distribution, mineralogical expressions and mechanisms concentration Co in different types hydrothermal ore deposits remain poorly constrained, inhibiting resource assessments exploration. Here we report other metal concentrations ores from active Fåvne Loki's Castle seafloor massive sulfide (SMS) located along Mohns Ridge assess some genetic...
Clinopyroxene-enriched upper mantle xenoliths classified as wehrlites are common (~20% of all xenoliths) in the central part Nógrád-Gömör Volcanic Field (NGVF), situated northern margin Pannonian Basin Hungary and southern Slovakia. In this study, we thoroughly investigated 12 wehrlite xenoliths, two from each wehrlite-bearing occurrence, to determine conditions their formation. Specific textural features, including clinopyroxene-rich patches an olivine-rich lithology, orthopyroxene remnants...
Abstract The Raman spectral behavior of N 2 , CO and CH 4 in ternary –CO –CH mixtures was studied from 22°C to 200°C 10 500 bars. peak position all is located at lower wavenumbers compared with pure the same pressure ( P )–temperature T ) PT conditions. Fermi diad splitting greater system than mixtures, increases as concentration constant . shifted higher However, relationship between mole fraction more complicated trends observed relative order isotherms pressure–peak space mimics molar...
Ultramafic and mafic rocks are possible targets for CO 2 sequestration via mineral carbonation. The determination of reaction kinetics the factors that control mineralization important in order to understand predict how fast injected will react with host permanently isolate store carbon. Here we present experimental results olivine carbonation experiments using synthetic fluid inclusions (SFI) as micro-reactors. micro-reactor technique coupled non-destructive Raman spectroscopy allows us...
Abstract A natural CO 2 reservoir system with a sandstone lithology in NW Hungary has been studied due to its similarities large saline formation that is widespread the Pannonian Basin (Central Europe) and suggested be one of best candidates for industrial storage. range analytical techniques used on core samples from -containing layers represent wide pressures (90–155 bar), temperatures (79–95°C) pore fluid compositions (total dissolved solids between 18 000 50 700 mg l −1 ) identify...
Low permeability caprock prevents migration of injected CO2 towards the surface and potable water reservoirs. As a result geochemical reactions among minerals CO2-saturated pore water, physical properties such as porosity, tortuosity may change, which could affect sealing capability caprocks. Due to common high clay mineral content caprocks, reactivity these should be well-studied at reservoir conditions. The main aim this study is understand better behavior CO2–brine–clay system by using...
The chemical history of seawater provides key information on Earth’s geologic processes and is fundamental for robust CO2 reconstructions. knowledge the secular evolution oceanic boron isotope budget particularly important reconstruction from isotopes. composition (δ11Bsw) homogeneous, but varies multi-million year time scales, given its residence approximately 10 million years. To date, has been difficult to constrain, posing a major uncertainty boron-based pH...
The caprock is the only physical barrier in migration path of CO2 during geological storage. For this reason, integrity one most important factors regarding long-term safe underground storage CO2. As a result geochemical reactions, among minerals and saturated pore water, properties caprocks such as porosity permeability may change, which could affect their sealing capacity. Natural occurrences can help to understand these reactions under conditions on timescale.
Reducing anthropogenic CO2 emissions is one of the greatest goals present and future environmental scientists. Carbon capture sequestration considered to be an efficient technology in eliminating carbon-dioxide at large, stationary carbon-emitting industrial sources. To ensure long term stability geologically trapped CO2, behavior CO2-reservoir-porewater system should predictable on geological timescales. Natural reservoirs are very important studying safety storage CO2. In these natural...
In Hungary the most abundant potential storage formations are saline aquifers with sandstone reservoir and clayey caprock. Present work is focused on mineralogy of core samples their expectable geochemical reactions for effect scCO2. From rock thin sections were analyzed by optical microscopy as well SEM-BSE. XRD measurements also performed, subsequently models run (PHREEQC 3.0, LLNL database). The preliminary results model show dissolution calcite plagioclase, K-feldspar, ankerite....