A5022955259- CO2 Sequestration and Geologic Interactions
- Methane Hydrates and Related Phenomena
- Hydrocarbon exploration and reservoir analysis
- Geological and Geochemical Analysis
- Drilling and Well Engineering
- earthquake and tectonic studies
- Hydraulic Fracturing and Reservoir Analysis
- Geochemistry and Geologic Mapping
- Groundwater flow and contamination studies
- High-pressure geophysics and materials
- Reservoir Engineering and Simulation Methods
- Groundwater and Isotope Geochemistry
- Carbon Dioxide Capture Technologies
- Geothermal Energy Systems and Applications
- Atmospheric and Environmental Gas Dynamics
- Geological and Geophysical Studies Worldwide
- Geological Studies and Exploration
- Ocean Acidification Effects and Responses
- Tunneling and Rock Mechanics
- Seismic Imaging and Inversion Techniques
- Geological Modeling and Analysis
- Geotechnical Engineering and Analysis
- Microbial Community Ecology and Physiology
- Seismology and Earthquake Studies
- Geotechnical and Geomechanical Engineering
University of Southampton
2015-2024
National Oceanography Centre
2014-2023
GA Drilling (Slovakia)
2020
Lamont-Doherty Earth Observatory
2008-2018
Columbia University
2008-2018
ETH Zurich
2005
Carbon capture and storage (CCS) provides a solution toward decarbonization of the global economy. The success this depends on ability to safely permanently store CO2 This study demonstrates for first time permanent disposal as environmentally benign carbonate minerals in basaltic rocks. We find that over 95% injected into CarbFix site Iceland was mineralized less than 2 years. result contrasts with common view immobilization within geologic reservoirs takes several hundreds thousands Our...
Research Article| October 01, 2008 Mineral Carbonation of CO2 Eric H. Oelkers; Oelkers 1Biogéochimie et Géochimie Expérimentale LMTG-Université de Toulouse-CNRS-IRD-OMP 14 av. Edouard Belin, 31400 Toulouse, France E-mail: oelkers@lmtg.obs-mip.fr Search for other works by this author on: GSW Google Scholar Sigurdur R. Gislason; Gislason 2Institute Earth Sciences, University Iceland Sturlugata 7, Askja, 101 Reykjavik, sigrg@raunvis.is Juerg Matter 3Lamont-Doherty Observatory Columbia 61 Route...
Near-surface reaction of CO 2 -bearing fluids with silicate minerals in peridotite and basalt forms solid carbonate minerals. Such processes form abundant veins travertine deposits, particularly association tectonically exposed mantle peridotite. This is important the global carbon cycle, weathering, understanding physical-chemical interaction during retrograde metamorphism. Enhancing rate such reactions a proposed method for geologic storage, perhaps direct capture from near-surface fluids....
The increasing concentrations of CO2 in the atmosphere are attributed to rising consumption fossil fuels for energy generation around world. One most stable and environmentally benign methods reducing atmospheric is by storing it as thermodynamically carbonate minerals. Olivine ((Mg,Fe)2SiO4) an abundant mineral that reacts with form Mg-carbonate. carbonation olivine can be enhanced injecting solutions containing at high partial pressure into olivine-rich formations temperatures, or...
Deep aquifers are potential long‐term storage sites for anthropogenic CO 2 emissions. The retention time and environmental safety of the injected depend on geologic physical factors chemical reactions between , aquifer water, host rocks. pH buffer capacity water acid neutralization rocks important permanent stabilization . Mafic rocks, such as basalt, which primarily consists Ca, Mg silicate minerals, have a high by providing alkaline earth elements that form stable carbonate minerals....
In situ mineral carbonation is facilitated by aqueous-phase chemical reactions with dissolved CO2. Evidence from the laboratory and field shows that limiting factors for in are dissolution rate of CO2 into aqueous phase release divalent cations basic silicate minerals. Up to now, pilot storage projects commercial operations have focused on injection anthropogenic as a supercritical depleted oil gas reservoirs or deep saline aquifers limited potential mineralization. The CarbFix Pilot Project...
The storage of large volumes industrial CO2 emissions in deep geological formations is one the most promising climate mitigation options. long-term retention time and environmental safety are defined by interaction injected with reservoir fluids rocks. Finding a solution that long lasting, thermodynamically stable environmentally benign would be ideal. Storage as solid magnesium or calcium carbonates basaltic rocks may provide such solution. Basaltic rocks, which primarily consist silicate...
Microbial abundance and diversity in deep subsurface environments is dependent upon the availability of energy carbon. However, supplies oxidants reductants capable sustaining life within mafic ultramafic continental aquifers undergoing low-temperature water-rock reaction are relatively unknown. We conducted an extensive analysis geochemistry microbial communities recovered from fluids sampled boreholes hosted peridotite gabbro Tayin block Samail Ophiolite Sultanate Oman. The geochemical...
Carbon capture and storage (CCS) is a key technology to reduce carbon dioxide (CO2) emissions from industrial processes in feasible, substantial, timely manner. For geological CO2 be safe, reliable, accepted by society, robust strategies for leakage detection, quantification management are crucial. The STEMM-CCS (Strategies Environmental Monitoring of Marine Capture Storage) project aimed provide techniques understanding enable inform cost-effective monitoring CCS sites the marine...
The Samail Ophiolite in Oman, the largest exposed body of ultramafic rocks at Earth’s surface, produces a continuous flux hydrogen through low-temperature water/rock reactions. In turn, scale subsurface microbial biosphere is sufficient to consume much this hydrogen, except where H 2 delivered surface seeps via faults. By integrating data from recent investigations into alteration history peridotites, groundwater dynamics, and serpentinite-hosted communities, we identify feasible conditions...
The long-term security of geologic carbon storage is critical to its success and public acceptance. Much the risk associated with geological stems from buoyancy. Gaseous supercritical CO2 are less dense than formation waters, providing a driving force for it escape back surface. This buoyancy can be eliminated by dissolution into water prior to, or during injection subsurface. makes possible inject fractured rocks further enhance mineral especially if injected silicate rich in divalent metal...
Abstract Basalts are recognized as one of the major habitats on Earth, harboring diverse and active microbial populations. Inconsistently, this living component is rarely considered in engineering operations carried out these environments. This includes carbon capture storage (CCS) technologies that seek to offset anthropogenic CO 2 emissions into atmosphere by burying greenhouse gas subsurface. Here, we show deep ecosystems respond quickly field associated with injections based a...
There is growing urgency for CO 2 removal strategies to slow the increase of, and potentially lower, atmospheric concentrations. Enhanced weathering, whereby natural reactions between silicate minerals that produce dissolved bicarbonate ions are accelerated, has potential remove substantial on decadal centennial timescales. The global mining industry produces huge volumes of fine wastes could be utilised as feedstock enhanced weathering. We have compiled a database weathering mined metal...
Abstract The Oman Drilling Project established an “Active Alteration” multi‐borehole observatory in peridotites undergoing low‐temperature serpentinization the Samail Ophiolite. highly serpentinized rocks are contact with strongly reducing fluids. Distinct hydrological regimes, governed by differences rock porosity and fracture density, give rise to steep redox (Eh +200 −750 mV) pH (pH range 8.5–11.2) gradients within 300–400 m deep boreholes. serpentinites fluids host active subsurface...
To mitigate anthropogenically induced climate change and ocean acidification, net carbon dioxide emissions to the atmosphere must be reduced. One proposed option is underground CO2 disposal. Large-scale injection of into Earth's crust requires an understanding multiphase flow properties high-pressure displacing brine. We present laboratory-scale core flooding experiments designed measure endpoint relative permeability for brine at in situ pressures, salinities, temperatures. Endpoint...