Article
Green & Sustainable Science & Technology
Thomas M. P. Ratouis, S. O. Snaebjornsdottir, Martin J. Voigt, Bergur Sigfusson, Gunnar Gunnarsson, Edda S. Aradottir, Vala Hjorleifsdottir
Summary: The Carbfix 2 project demonstrates the cost effectiveness and technical maturity of capturing CO2 and H2S emissions from geothermal power plants and permanently storing them in basalt through in-situ mineralization. Field scale transport models are used to characterize the storage reservoir and evaluate the behavior of solutes. The study confirms the effectiveness of in-situ mineralization and predicts the future electricity generation decline and storage capacity of the reservoir.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2022)
Review
Energy & Fuels
Ke Wang, Lin Ma, Kevin G. Taylor
Summary: This article summarizes laboratory measurements conducted on typical caprocks and reservoir rocks, focusing on the microstructural changes during CO2-fluid-rock reactions and their impact on pore structures and geological behavior. Key findings include the facilitating effect of water on CO2-rock reactions, the potential increase or reduction of pore space due to adsorption-induced swelling in mudstone, the major factors causing pore throat blockage in sandstone, and the significant enhancement of fluid injectivity through the formation of conductive wormholes in carbonates.
Article
Energy & Fuels
Haiyang Zhang, Mohammed Al Kobaisi, Muhammad Arif
Summary: Rock wettability plays a crucial role in the fate of injected CO2, affecting trapping capacity and containment security. Field-scale numerical simulations reveal that wettability and injection rate strongly influence CO2 migration and storage efficiency. Water-wet sandstone exhibits 42% higher residual trapping compared to CO2-wet sandstone, and longer injection durations decrease residual trapping while increasing solubility trapping.
Article
Geochemistry & Geophysics
Zairong Liu, Joshua J. Shea, Stephen F. Foley, Yannick Bussweiler, Arno Rohrbach, Stephan Klemme, Jasper Berndt
Summary: The study shows that Cenozoic basaltic rocks in Eastern Australia have different mineralogical sources and metasomatic enrichments at different locations. Carbonatitic metasomatism resulted in the formation of source rocks with varying degrees, as evidenced by the trace element compositions of olivines and whole rock geochemistry.
Article
Chemistry, Multidisciplinary
Sujin Hong, Seokyoon Moon, Junhee Cho, Ah-Hyung Alissa Park, Youngjune Park
Summary: Carbon mineralization with alkaline earth metal-bearing industrial waste is a promising CO2 removal technology that can stably store CO2 and produce solid carbonates for various industries. The crystalline structures and polymorphisms of the solid carbonates depend on factors such as pH, temperature, pressure, reaction time, ion types and ratios, degree of saturation, stirring rate, and feeding order. The effects of Mg2+ on the structural transformation of CaCO3 were investigated, and it was found that the Mg2+/Ca2+ ratio and the change of CO32-/Ca2+ ratio control the transformation.
JOURNAL OF CO2 UTILIZATION
(2022)
Review
Environmental Sciences
Shanxue Jiang, Yuening Li, Fang Wang, Haishu Sun, Huijiao Wang, Zhiliang Yao
Summary: This paper reviews the role of CO2 enhanced oil recovery (EOR) in accelerating carbon neutrality in China, providing a comprehensive analysis of the strategies to achieve carbon neutrality and the potential of CO2-EOR as a promising technology. The data analysis shows that both reduction in carbon emissions and increase in carbon sequestration are necessary to achieve carbon neutrality. However, critical issues such as technical challenges, leakage and safety concerns, cost issues, and policy considerations need to be addressed in order to make CO2-EOR a reliable and favorable technology.
ENVIRONMENTAL RESEARCH
(2022)
Article
Green & Sustainable Science & Technology
Ahmed Al-Yaseri, Mujahid Ali, Ghazanfer Raza Abbasi, Hussein Rasool Abid, Nilesh Kumar Jha
Summary: This study evaluated the effect of nano-sized SiO2 on the wettability of basalt rock surface, with results showing that SiO2 nanoparticles can change the CO2-wet basalt surface to weakly water-wet, potentially enhancing CO2 trapping capacity in basalt formations with adequate porosity and permeability.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2021)
Article
Engineering, Chemical
Le Quynh Hoa, Ralph Baessler, Dirk Bettge, Enrico Buggisch, Bernadette Nicole Schiller, Matthias Beck
Summary: Representative low-cost materials were embedded in mortar to mimic the casing-mortar interface in injection wells. Two types of cement were investigated for their corrosion resistance, and exposure tests revealed unexpected corrosion types on steel surfaces. Surface analysis and element mapping were used to trace chloride intrusion and corrosion process on exposed specimens.
Article
Thermodynamics
Federico Cao, Dmitry Eskin, Yuri Leonenko
Summary: Carbon dioxide sequestration is an effective technology for mitigating greenhouse gas emissions, but uncertainties regarding the risks of leakage remain. Increasing underground disposal security by dissolving CO2 in brine and re-injecting it underground can prevent leaks. This technique can expand the availability of worldwide aquifers for carbon sequestration.
Article
Engineering, Environmental
Yuting Zhang, Christopher Jackson, Samuel Krevor
Summary: This study estimates the amount of CO2 stored by facilities since 1996 based on publicly available sources and categorizes them into three assurance levels. The storage estimates indicate significant climate relevance comparable to renewable energy emissions impacts. The widely used capture capacity is not a reliable proxy for storage volumes, emphasizing the need for uniform reporting with quality assurance.
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
(2022)
Article
Green & Sustainable Science & Technology
Eric H. Oelkers, Serguey Arkadakskiy, Abdulkader M. Afifi, Hussein Hoteit, Maximillian Richards, Jakub Fedorik, Antoine Delaunay, Jose Eduardo Torres, Zeyad T. Ahmed, Noushad Kunnummal, Sigurdur R. Gislason
Summary: The Jizan region of southwest Saudi Arabia has the potential for large-scale subsurface carbon storage through the mineralization of basaltic rocks, which can effectively dispose of substantial quantities of CO2 and store carbon emissions from industrial facilities for over one hundred years.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2022)
Article
Engineering, Environmental
Senyou An, Hamidreza Erfani, Helge Hellevang, Vahid Niasar
Summary: Geological carbon sequestration is an effective technology to reduce atmospheric CO2 through geochemical reactions in saline aquifers. Reservoir models use reaction rates from batch experiments, but there is a discrepancy in scales. Pore-scale models are utilized to upscale geochemical reactions and investigate reactive transport in carbonate rocks.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Erfan Mohammadian, Fahimeh Hadavimoghaddam, Mahdi Kheirollahi, Mehdi Jafari, Chenlu Xu, Bo Liu
Summary: CO2 sequestration is an anticipated method to reduce the harmful levels of CO2 in the atmosphere, and injecting CO2 into oceans is of great significance due to their large sequestration capacity. However, concerns about changes in water pH exist. This study experimentally measured pH and solubility under various conditions and developed a machine learning model to predict pH accurately. The study provides insights into interactions and mechanisms involved in ocean sequestration, which can aid in future large-scale operations.
JOURNAL OF CO2 UTILIZATION
(2023)
Article
Chemistry, Multidisciplinary
Zhihao Fu, Baoshan Jia, Yanming Wang, Weipeng Tian
Summary: This study investigates the effect of CO2 injection pressure on gas migration characteristics and coalbed methane (CBM) extraction. Experimental tests were conducted using a CH4 to CO2 replacement platform under different CO2 injection pressures. The results indicate that gas migration rate increases with higher injection pressure, and CH4 desorption rate and coal seam permeability display different stages of decline and stability. Higher injection pressure leads to increased CH4 desorption volume and CO(2) sequestration volume, and improved CH4 extraction efficiency. These findings are of great importance for optimizing CO2 injection pressure and enhancing CBM extraction.
Review
Environmental Sciences
Maria Hasnain, Rida Zainab, Faraz Ali, Zainul Abideen, Jean Wan Hong Yong, Ali El-Keblawy, Saud Hashmi, Emanuele Radicetti
Summary: CO2 emissions from fossil fuels and coal combustion contribute to global climate change and warming, while heavy metals and metalloids pose a threat to ecological functionality and human life. Microalgae thrive in harsh environments and offer environmentally friendly and cost-effective CO2 remediation solutions. The interaction between microalgae and bacteria can enhance their performance in wastewater treatment and algal production systems.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2023)
Article
Energy & Fuels
Yiman Li, Zhonghe Pang, Iwona Monika Galeczka
Article
Geochemistry & Geophysics
Josephina J. P. A. Mulders, Dominique J. Tobler, Eric H. Oelkers
Summary: The study investigates the effect of aqueous fluid saturation on the nucleation pathway of siderite (FeCO3) and demonstrates that the nucleation mechanism depends on the fluid saturation state. Under low saturation indices, siderite nucleation proceeds via direct crystallization from the aqueous fluid, while at higher saturation indices, nucleation occurs through the initial precipitation of amorphous ferrous carbonate followed by the formation of crystalline siderite. Understanding the aqueous fluid saturation state during siderite nucleation is crucial for interpreting the isotopic signature in natural systems.
Article
Geochemistry & Geophysics
C. Sanchez-Roa, G. D. Saldi, T. M. Mitchell, F. Iacoviello, J. Bailey, P. R. Shearing, E. H. Oelkers, P. G. Meredith, A. P. Jones, A. Striolo
Summary: Efforts to maintain and enhance reservoir permeability in geothermal systems can lead to more sustainable energy sourcing and reduced CO2 emissions. The interactions between host rock and flowing fluids greatly influence the evolution of permeability in geothermal reservoirs. The balance between mineral dissolution and precipitation in response to fluid chemistry dictates the productivity and lifetime of geothermal reservoirs.
EARTH AND PLANETARY SCIENCE LETTERS
(2021)
Article
Energy & Fuels
Pedram Mahzari, Thomas M. Mitchell, Adrian P. Jones, Eric H. Oelkers, Alberto Striolo, Francesco Iacoviello, Paul R. Shearing, Juan Ernesto Juri
Summary: Enhanced oil recovery from shale formations remains a challenging task, with novel laboratory methodologies showing that cores saturated with live oil exhibit significantly higher oil recovery rates compared to those saturated with dead oil. The results highlight the importance of conducting realistic laboratory experiments to optimize shale oil EOR strategies for field applications.
Article
Geochemistry & Geophysics
Anna L. Harrison, Pascale Benezeth, Jacques Schott, Eric H. Oelkers, Vasileios Mavromatis
Summary: The experiment showed that at 25 and 35 degrees Celsius, nesquehonite transforms into dypingite through dissolution and re-precipitation, leading to significant exchange of Mg and C between solid and fluid. During the transformation, the initial isotopic composition of the solid phase was overwritten, indicating that isotopic equilibrium likely occurred between dypingite and fluid.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Geochemistry & Geophysics
Chiara Marieni, Martin J. Voigt, Eric H. Oelkers
Summary: The dissolution rates of Green Monster Mine epidote are affected by pH and temperature, with the formation of secondary phases also influencing metal release rates. Calcium tends to be preferentially released at alkaline conditions, while iron is more likely to be retained in the solid phase. The increasing dissolution rates of epidote with increasing pH may play a beneficial role in mineral carbonation efforts and weathering processes of altered mafic rocks.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Geochemistry & Geophysics
Cristina Castillo Alvarez, Ghylaine Quitte, Jacques Schott, Eric H. Oelkers
Summary: Light Ni isotopes are preferentially incorporated into calcite during coprecipitation. The extent of Ni isotope fractionation between solid and aqueous fluid phase increases as calcite growth rate slows. The incorporation of Ni into calcite could be a significant sink of light Ni in the ocean.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Geochemistry & Geophysics
Martin Voigt, Chiara Marieni, Andre Baldermann, Iwona M. Galeczka, Domenik Wolff-Boenisch, Eric H. Oelkers, Sigurdur R. Gislason
Summary: The interaction of marine basalt with seawater leads to the formation of carbonates, with different minerals forming under different CO2 pressures. Laboratory experiments have shown that injecting CO2-charged seawater into submarine basalts can lead to rapid CO2 mineralization, providing an efficient approach for long-term safe carbon storage.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Energy & Fuels
Pedram Mahzari, Ashley Stanton-Yonge, Catalina Sanchez-Roa, Giuseppe Saldi, Thomas Mitchell, Eric H. Oelkers, Vala Hjorleifsdottir, Sandra Osk Snaebjornsdottir, Thomas Ratouis, Alberto Striolo, Adrian P. Jones
Summary: This study used a fully coupled hydro-thermo-mechanical numerical model to investigate the impacts of re-injection of geothermal fluids and CO2 on fluid flow paths in the Hellisheidi geothermal field. Results showed that faults and their connections played a crucial role in fluid transport, with a sweet spot for sustainable flow and heat extraction near faults intercepting geological layers at a depth of 1100 m. Incorporating geomechanical calculations in tracer test history matching could change arrival times and peak profiles, highlighting the importance of stress-dependent permeability in predicting fluid flow paths and processes in the reservoir.
Article
Green & Sustainable Science & Technology
Chiara Marieni, Martin Voigt, Deirdre E. Clark, Sigurdur R. Gislason, Eric H. Oelkers
Summary: This study investigated mineralization reactions of CO2 and H2S in subsurface mafic rocks when injected with gas-charged freshwater and seawater, finding that over 80% of injected CO2 mineralizes as Ca and Fe carbonates at temperatures <= 170 degrees C, while H2S is predicted to be completely mineralized as pyrite in all fluid systems. Additionally, higher CO2 content fluids in seawater systems show pH buffering at <= 6 due to the precipitation of Mg-rich aluminosilicates at temperatures <= 170 degrees C.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2021)
Article
Green & Sustainable Science & Technology
Iwona Monika Galeczka, Andri Stefansson, Barbara I. Kleine, Johann Gunnarsson-Robin, Sandra Osk Snabjornsdottir, Bergur Sigfusson, Sveinborg Hlif Gunnarsdottir, Tobias B. Weisenberger, Eric H. Oelkers
Summary: The study investigates the injection of water dissolved CO2 and H2S into basalts in the Nesjavellir geothermal system, predicting mineralization of the altered basaltic host rock and increased mineralization efficiency with the anticipated increase in CO2 and H2S content in the injection fluid.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2022)
Article
Green & Sustainable Science & Technology
Eric H. Oelkers, Serguey Arkadakskiy, Abdulkader M. Afifi, Hussein Hoteit, Maximillian Richards, Jakub Fedorik, Antoine Delaunay, Jose Eduardo Torres, Zeyad T. Ahmed, Noushad Kunnummal, Sigurdur R. Gislason
Summary: The Jizan region of southwest Saudi Arabia has the potential for large-scale subsurface carbon storage through the mineralization of basaltic rocks, which can effectively dispose of substantial quantities of CO2 and store carbon emissions from industrial facilities for over one hundred years.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2022)
Review
Environmental Sciences
Sandra O. Snaebjornsdottir, Bergur Sigfusson, Chiara Marieni, David Goldberg, Sigurdur R. Gislason, Eric H. Oelkers
NATURE REVIEWS EARTH & ENVIRONMENT
(2020)
Article
Geochemistry & Geophysics
Xinze Lu, Geoffrey J. Gilleaudeau, Brian Kendall
Summary: The Late Ordovician mass extinction is the first major extinction event in the Phanerozoic, but the reasons for the decline in global biodiversity before the extinction are not well understood.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2024)
Article
Geochemistry & Geophysics
Junyao Kang, Daniel D. Gregory, Benjamin Gill, Shiqiang Huang, Changxin Lai, Zhaoshan Chang, Huan Cui, Ivan Belousov, Shuhai Xiao
Summary: Sedimentary pyrite is an important geological archive, but it can be altered by diagenetic and hydrothermal processes. This study successfully trained machine learning algorithms to distinguish pyrite origins using trace element data. The approach was validated and applied to identify the origins of pyrite in two sedimentary successions in South China.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2024)