A5032443710- CO2 Sequestration and Geologic Interactions
- Hydraulic Fracturing and Reservoir Analysis
- Groundwater flow and contamination studies
- Rock Mechanics and Modeling
- Geothermal Energy Systems and Applications
- High-pressure geophysics and materials
- Enhanced Oil Recovery Techniques
- Geological and Geochemical Analysis
- Carbon Dioxide Capture Technologies
- Concrete and Cement Materials Research
- Landfill Environmental Impact Studies
- Geophysical and Geoelectrical Methods
- Heavy metals in environment
- Fluid Dynamics and Mixing
- Methane Hydrates and Related Phenomena
- Aerosol Filtration and Electrostatic Precipitation
- Fire dynamics and safety research
- Arsenic contamination and mitigation
- Geology and Environmental Impact Studies
- Building materials and conservation
- Zeolite Catalysis and Synthesis
- Underground infrastructure and sustainability
- Atmospheric and Environmental Gas Dynamics
- Petroleum Processing and Analysis
- Mine drainage and remediation techniques
Tohoku University
2022-2024
Taiyuan University of Science and Technology
2024
Hydrothermally altered basaltic rocks are widely distributed and more accessible than fresh rocks, making them attractive feedstocks for permanent CO2 storage through mineralization. This study investigates the reactivity dissolution behaviors of basalt during reaction with CO2-rich fluids compares it unaltered batch hydrothermal experiments using a brine that simulates reservoir conditions 5 MPa gas at 100 °C. When powders to evaluate reactivity, results show although leaching rates...
Chemical stimulation of geothermal reservoirs via selective mineral dissolution with eco-friendly chelating agents has been recently proposed as a novel method complementary to hydraulic stimulation. In our previous study, we demonstrated rapid and significant permeability enhancement accompanied by the creation voids due biotite in fractured granite at 200 °C under confining stress. However, process its optimum pH have not investigated yet. this present results experiments conducted on...
An enhanced geothermal system using carbon dioxide (CO2) for both reservoir creation and thermal energy extraction has attracted attention; however, studies on the CO2 fracturing of volcanic rocks under conditions are lacking. This study aimed to elucidate characteristics processes in via integrated lab-scale experiments numerical simulations basalt andesite at 250°C a confining pressure 30 MPa. Moreover, it proposed demonstrated an efficient CO2-based method based obtained insights....
Chemical stimulation of geothermal reservoirs through mineral dissolution using environmentally friendly chelating agents has been suggested as a new method to complement hydraulic stimulation. However, the permeability enhancement mechanism and optimal pH remain unexplored. In this study, we conducted flooding experiments on fractured andesitic rock at 200 °C 20 wt% N,N-bis(carboxymethyl)-L-glutamic acid (GLDA) solution, 2–10. GLDA selectively dissolved Fe-bearing minerals (e.g., pyroxenes...
Abstract Natural and anthropogenic chelating ligands play important roles in promoting mineral dissolution during water-rock interactions. To address the remaining issue of how participate minerals, this study investigated characteristics seven types silicate minerals presence a ligand, N,N-bis(carboxymethyl)-L-glutamic acid (GLDA), which is glutamic derivative, through batch experiments. The results showed that all i.e., olivine (nesosilicate), epidote (sorosilicate), tourmaline...
Chemical stimulation using environment-friendly chelating agents (e.g., readily biodegradable GLDA) was recently shown to rapidly and substantially enhance the permeability of fractured granite, without creating mineral precipitation. This study examined effectiveness such in volcanic rocks through flooding experiments conducted with a pH 4 GLDA solution on dacitic, andesitic, basaltic from geothermal fields El Salvador at 200 °C under confining pressure. Results showed substantial...
Existing research indicates that to create geothermal reservoirs using CO2 injection, additional stimulation methods are necessary. N, N-bis(carboxymethyl)-L-glutamic acid (GLDA) injection has been predicted increase the permeability of injection-induced cloud-fracture networks (CFNs) and could serve as an method. Nevertheless, influence differential stress, flow geometry, scale on characteristics enhancement by GLDA is yet be clarified. Accordingly, this study experimentally elucidated...
Industrial waste utilization for carbon dioxide (CO2) mineralization offers a highly promising approach to significantly reduce CO2 emissions; however, it faces the challenge of consumption huge amounts chemicals without their recovery. This study proposes an improved process that employs recyclable solution environmentally friendly chelating agent, N,N-Dicarboxymethyl glutamic acid (GLDA) enriched with NaHCO3 and involves temperature swing-facilitated dissolution carbonation Ca-bearing...
Geological storage and mineralization of CO 2 in mafic/ultramafic reservoirs faces challenges including limited effective porosity, permeability, rock reactivity; difficulties using seawater for capture; uncontrolled carbonation. This study introduces a capture, storage, approach with the utilization biobased biodegradable chelating agents seawater. An acidic agent solution is used to increase porosity permeability through enhanced mineral dissolution. For instance, applying an N ,...
Enhanced weathering of silicate minerals is a promising approach for reducing atmospheric CO
Abstract Hydration, carbonation, and related metasomatism of mantle peridotite play a significant role in the global geochemical cycle. In this study, we combined an analysis carbonated serpentinite with hydrothermal experiments on carbonation Ca-metasomatism for samples from Manlay ophiolite, southern Mongolia to investigate that mechanism body after serpentinization. Samples show was either transected by calcite dolomite veins or completely replaced carbonates (calcite minor dolomite)...
Mercury (Hg) is a widespread pollutant that poses significant risks to both ecosystems and human health. While previous studies have evaluated Hg concentrations in soils, few measured emissions areas with high or related these measurements estimates of exposure via air inhalation based on flux values. This study addresses this gap by proposing the use gaseous elemental (GEM) for risk assessments, particular focus importance exposure, which has implications future management strategies....
Illegal dumping sites are usually characterized by complex contamination situations due to the presence of multiple sources. To improve efficiency illegal waste site remediation, this study developed a numerical model considering effects groundwater levels and hydraulic gradient changes on remediation operations. Using model, most likely sources for 1,4-dioxane at an in Iwate Prefecture, Japan, were successfully identified (including location, amount, time occurrence) reproducing historical...
Industrial waste utilization for carbon dioxide (CO2) mineralization offers a highly promising approach to significantly reduce CO2 emissions; however, it faces the challenge of low cost-effectiveness. This study proposes an improved process that employs recyclable solution environmentally friendly chelating agent, N,N-Dicarboxymethyl glutamic acid (GLDA) enriched with NaHCO3, and involves temperature swing-facilitated dissolution carbonation Ca-bearing industrial wastes under ambient...