Journal: Energy & Fuels

Abbreviation

Energy Fuels

Publisher

American Chemical Society

Journal Volumes

ISSN

0887-0624
1520-5029

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Publications1 - 10 of 44
  • Reactivity of Wet scCO₂ toward Reservoir and Caprock Formations under Elevated Pressure and Temperature Conditions: Implications for CCS and CO₂-Based Geothermal Energy Extraction
    Item type: Journal Article
    Rangel Jurado, Nicolas; Kong, Xiang-Zhao; Kottsova, Anna; et al. (2025)
    Energy & Fuels
    Carbon capture and storage (CCS) and CO2-based geothermal energy are promising technologies for reducing CO2 emissions and mitigating climate change. Safe implementation of these technologies requires an understanding of how CO2 interacts with fluids and rocks at depth, particularly under elevated pressure and temperature. While CO2-bearing aqueous solutions in geological reservoirs have been extensively studied, the chemical behavior of water-bearing supercritical CO2 remains largely overlooked by academics and practitioners alike. We address this knowledge gap by conducting core-scale laboratory experiments, focusing on the chemical reactivity of water-bearing supercritical CO2 (wet scCO2) with reservoir and caprock lithologies and simulating deep reservoir conditions (35 MPa, 150 °C). Employing a suite of high-resolution analytical techniques, we characterize the evolution of morphological and compositional properties, shedding light on the ion transport and mineral dissolution processes, caused by both the aqueous and nonaqueous phases. Our results show that fluid–mineral interactions involving wet scCO2 are significantly less severe than those caused by equivalent CO2-bearing aqueous solutions. Nonetheless, our experiments reveal that wet scCO2 can induce mineral dissolution reactions upon contact with dolomite. This dissolution appears limited, incongruent, and self-sealing, characterized by preferential leaching of calcium over magnesium ions, leading to supersaturation of the scCO2 phase and reprecipitation of secondary carbonates. The markedly differing quantities of Ca2+ and Mg2+ ions transported by wet scCO2 streams provide clear evidence of the nonstoichiometric dissolution of dolomite. More importantly, this finding represents the first reported observation of ion transport processes driven by water continuously dissolved in the scCO2 phase, which challenges prevailing views on the chemical reactivity of this fluid and highlights the need for further investigation. A comprehensive understanding of the chemical behavior of CO2-rich supercritical fluids is critical for ensuring the feasibility and security of deep geological CO2 storage and CO2-based geothermal energy.
  • CO2 Splitting via Two-Step Solar Thermochemical Cycles with Zn/ZnO and FeO/Fe3O4 Redox Reactions II
    Item type: Journal Article
    Loutzenhiser, Peter; Gálvez, M.E.; Hischier, Illias; et al. (2009)
    Energy & Fuels
  • Solar Syngas Production from H2O and CO2 via Two-Step Thermochemical Cycles Based on Zn/ZnO and FeO/Fe3O4 Redox Reactions: Kinetic Analysis
    Item type: Journal Article
    Stamatiou, Anastasia; Loutzenhiser, Peter G.; Steinfeld, Aldo (2010)
    Energy & Fuels
  • Impact of Gaseous Chemistry in H2–O2–N2 Combustion over Platinum at Fuel-Lean Stoichiometries and Pressures of 1.0–3.5 bar
    Item type: Journal Article
    Sui, Ran; Mantzaras, John; Es-sebbar, Et-touhami; et al. (2017)
    Energy & Fuels
  • Stability and Performance of Ruthenium Catalysts Based on Refractory Oxide Supports in Supercritical Water Conditions
    Item type: Journal Article
    Zöhrer, Hemma; Mayr, Franziska; Vogel, Frédéric (2013)
    Energy & Fuels
  • Minireview on Lattice Boltzmann Modeling of Gas Flow and Adsorption in Shale Porous Media: Progress and Future Direction
    Item type: Review Article
    Zhao, Jianlin; Wang, Junjian; Zhang, Guangqing; et al. (2023)
    Energy & Fuels
    As an important unconventional resource, shale gas reservoirs have unique characteristics different from conventional oil and gas reservoirs. The ultrasmall pore sizes in shale induce the nanopore confinement effect on shale gas flow. In addition, shale rocks are rich in organic matter, which has strong interactions with gas molecules and results in gas adsorption. The lattice Boltzmann method (LBM) for micro- and nanoscale gas flow, which is originally designed for micro-electro-mechanical systems (MEMS), has been modified to simulate gas flow and adsorption in shale rocks. This work reviews four types of lattice Boltzmann models developed recently for shale gas flow/adsorption: (1) the slip-velocity-based LBM, (2) high-order LBM, (3) diffusion-based LBM, and (4) REV-scale LBM. Among these models, the slip-velocity-based LBM is widely used for shale gas modeling, which incorporates the slip boundary condition and Knudsen number (Kn)-determined relaxation time to simulate the nanopore confinement effect. To model the gas adsorption, the fluid-solid interaction force is introduced into the model, and the magnitude of this interaction force is usually obtained from the molecular level simulations. LBMs have been regarded as an efficient numerical tool to estimate the shale gas apparent permeability, to describe the pore-scale flow behaviors, and to address the influence of gas adsorption on shale gas storage and transport. Nevertheless, some challenges exist in current applications of LBMs for shale gas flow and adsorption simulations that are discussed in this minireview as well.
  • Microencapsulation of Rubber- and Polymer-Modified Bitumen for Storage and Transportation
    Item type: Journal Article
    Anita; Rivera-Gonzalez, Natalia; Liu, Guan-Wen; et al. (2026)
    Energy & Fuels
    Polymer- and waste tire-rubber-modified bitumen enhance asphalt performance by improving stress dissipation, reducing fatigue, and alleviating aging and oxidation. However, the storage and transportation of modified bitumen, which often requires high temperatures to overcome the challenging rheological characteristics of the material, remain challenging because of thermal degradation, phase segregation, and fouling of containers. Here, we develop a microencapsulation strategy to enable safe solid-state storage and transport of modified bitumen. Microencapsulation is achieved through jetting of the modified binders through a single-nozzle system followed by coating within polyanionic lignin multilayers and hydrated lime to form robust shells. Electron microscopy and confocal fluorescence microscopy imaging show continuous shells without discernible macroscopic pores and cavities. The microcapsules show exceptional thermal and mechanical stability and tolerance to high-humidity conditions. Microcapsules with a diameter of 4 mm show a stress-withstanding ability as high as 131 ± 13.5 kN/m² and can withstand impact velocities ranging up to 35 and 19 m/s for polymer-modified and rubber-modified binder, respectively. The functional properties surpass transportation requirements for bitumen, including free-fall and long-term storage, while enabling direct application at destination sites with a relatively modest increase in viscosity. This work demonstrates a practical solution for improving the logistics and durability of modified bitumen in asphalt applications.
  • Qualitative evaluation of alkali release during the pyrolysis of biomass
    Item type: Journal Article
    Kowalski, Torsten; Ludwig, Christian; Wokaun, Alexander (2007)
    Energy & Fuels
  • Solar-Driven Coal Gasification in a Thermally Irradiated Packed-Bed Reactor
    Item type: Journal Article
    Piatkowski, Nicolas; Steinfeld, Aldo (2008)
    Energy & Fuels
  • Syngas Production by Thermochemical Gasification of Carbonaceous Waste Materials in a 150 kW(th) Packed-Bed Solar Reactor
    Item type: Journal Article
    Wieckert, Christian; Obrist, Albert; von Zedtwitz, Peter; et al. (2013)
    Energy & Fuels
Publications1 - 10 of 44