Suppression of anthracite dust by a composite of oppositely-charged ionic surfactants with ultra-high surface activity: Theoretical calculation and experiments

Bai, Xuyang; Yan, Guochao; Kong, Shuying; Yao, Jia; Wen, Peng; Li, Gang; Li, Jiajun; Zhang, Jiawei

doi:10.1016/j.fuel.2023.128075

Cited by 23 publications

(5 citation statements)

References 50 publications

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“…Wettability, as an intrinsic property of porous media, assumes a crucial role in fluid flow processes. It serves as a parameter to assess the relative affinity of two-phase fluids for the surfaces of porous media, exerting a decisive influence on fluid distribution, arrangement, and migration within such media [59,61,62]. In the context of oil and gas reservoir exploration, it is customary to conduct wettability measurements on the porous rocks of reservoirs [63,64].…”

Section: Wettability Of Porous Mediamentioning

confidence: 99%

Snap-Off during Imbibition in Porous Media: Mechanisms, Influencing Factors, and Impacts

Li,

Yao

2023

Eng

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The phenomenon of snap-off during imbibition in porous media, a fundamental two-phase fluid flow phenomenon, plays a crucial role in both crude oil production and carbon dioxide (CO2) utilization and storage. In porous media where two phases coexist, the instability of the phase interface may give rise to various displacement phenomena, including pore–body filling, piston-like displacement, and snap-off. Snap-off, characterized by the generation of discrete liquid droplets or gas bubbles, assumes paramount significance. This study provides a comprehensive overview of snap-off mechanisms, influencing factors, and impacts. Snap-off initiation arises from variations in the curvature radius at the interface between two phases within narrow regions, primarily influenced by capillary pressure. It can be influenced by factors such as the characteristics of multiphase fluids, the wettability of porous media, as well as the pore–throat geometry and topology within porous media. In turn, snap-off exerts a discernible influence on the fluid dynamics within the porous medium, resulting in impacts that encompass unrecoverable oil droplet formation, the oil bridging effect, drainage–imbibition hysteresis, strong foam generation and transient/dynamic effects. Although the snap-off phenomenon exerts detrimental effects during the conventional waterflooding in oil production, its potential is harnessed for beneficial outcomes in CO2-EOR and CO2 storage. This study significantly advances our understanding of snap-off and its multifaceted roles in multiphase fluid dynamics, offering vital insights for the precise prediction of fluid flow behavior and strategic control. These valuable insights can serve as a theoretical foundation to guide our deliberate modulation of snap-off phenomena, aiming at optimizing oil-recovery processes and enhancing the safety and stability of CO2 storage.

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Section: Wettability Of Porous Mediamentioning

confidence: 99%

Snap-Off during Imbibition in Porous Media: Mechanisms, Influencing Factors, and Impacts

Li,

Yao

2023

Eng

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“…While fossil fuels, represented by coal, oil, and natural gas, continue to dominate the global energy landscape and meet the majority of energy demands, the escalating concern regarding climate change and environmental issues [1,2] has brought attention to the negative impacts associated with their production and utilization [3][4][5][6][7][8][9][10]. Specifically, the combustion of fossil fuels releases substantial amounts of greenhouse gases, intensifying global warming [3,5].…”

Section: Introductionmentioning

confidence: 99%

A Review of In Situ Leaching (ISL) for Uranium Mining

Li,

Yao

2024

Mining

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Uranium, a cornerstone for nuclear energy, facilitates a clean and efficient energy conversion. In the era of global clean energy initiatives, uranium resources have emerged as a vital component for achieving sustainability and clean power. To fulfill the escalating demand for clean energy, continual advancements in uranium mining technologies are imperative. Currently, established uranium mining methods encompass open-pit mining, underground mining, and in situ leaching (ISL). Notably, in situ leaching stands out due to its environmental friendliness, efficient extraction, and cost-effectiveness. Moreover, it unlocks the potential of extracting uranium from previously challenging low-grade sandstone-hosted deposits, presenting novel opportunities for uranium mining. This comprehensive review systematically classifies and analyzes various in situ leaching techniques, exploring their core principles, suitability, technological advancements, and practical implementations. Building on this foundation, it identifies the challenges faced by in situ leaching and proposes future improvement strategies. This study offers valuable insights into the sustainable advancement of in situ leaching technologies in uranium mining, propelling scientific research and practical applications in the field.

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“…Simultaneously, optimizing the properties of CG/PE composite materials and their industrial applications require more exploration and practical endeavors. Anthracite, owing to its unique characteristics and high fixed carbon content, 14 serves as an ideal representative model for investigating the influence of fixed carbon on interface properties in these composite materials. The use of anthracite allows for a comprehensive exploration of the interaction between fixed carbon and polyethylene, revealing fundamental mechanisms affecting their compatibility.…”

Section: Introductionmentioning

confidence: 99%

Effect of fixed carbon on the interfacial compatibility of coal gangue/polyethylene composites was investigated using anthracite as a model compound

Li,

Liao,

Gao

et al. 2024

Polymer Composites

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Coal gangue (CG), a byproduct of coal mining, integrated with polyethylene (PE) offers potential in diverse applications. However, ensuring compatibility between CG and PE remains a challenge due to CG's complex nature. This study explores the influence of fixed carbon, represented by high‐carbon‐content anthracite, on the interface of CG/PE composites. Comprehensive investigations were conducted on physical, mechanical, thermal, microstructural, and chemical aspects. Results revealed that increasing carbon content positively impacted density and hardness while enhancing bending strength and modulus, albeit at a cost of reduced tensile strength. When the C content reached 80%, the hardness and density increased from 50.5 HD and 0.93 g cm−3 to 62.4 HD and 1.18 g cm−3, which were 23.6% and 26.9% higher, respectively. Meanwhile, the bending strength and bending modulus reached 17.2 and 1582.4 MPa, which were 53.6% and 239.1% higher than those of the composites prepared from pure PE (11.2 and 466.7 MPa), respectively. However, the tensile strength decreased by 48.7% from 11.7 to 6.0 MPa. Moderate carbon content positively affected thermal stability, yet higher concentrations posed stability challenges. Microstructural analyses unveiled varied interfacial morphologies, shedding light on carbon's role in enhancing material rigidity and hardness. Surface chemical studies suggested physical entanglement between carbon and PE. Additionally, varying carbon content influenced crystallization, elevating crystallinity and impacting mechanical properties. The findings underscore carbon's potential in reinforcing composite materials. This research provides insights into optimizing CG/PE composites and addressing CG treatment challenges.Highlights Unveiled relationships between fixed carbon and properties in composites. The structure was studied qualitatively and quantitatively by XRD. The anthracite‐C substitution in composite preparation was unraveled.

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Suppression of anthracite dust by a composite of oppositely-charged ionic surfactants with ultra-high surface activity: Theoretical calculation and experiments

Cited by 23 publications

References 50 publications

Snap-Off during Imbibition in Porous Media: Mechanisms, Influencing Factors, and Impacts

Snap-Off during Imbibition in Porous Media: Mechanisms, Influencing Factors, and Impacts

A Review of In Situ Leaching (ISL) for Uranium Mining

Effect of fixed carbon on the interfacial compatibility of coal gangue/polyethylene composites was investigated using anthracite as a model compound

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