Superabsorbent polymer for improved CO2 hydrate formation under a quiescent system

Kang, Dong Woo; Lee, Wonhyeong; Ahn, Young‐Ho

doi:10.1016/j.jcou.2022.102005

Cited by 13 publications

(13 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Different THF concentrations at the initial period have been observed to have similar induction periods at lower temperatures, indicating a consistent initiation period. 60,174,175 At lower THF concentrations, significantly <2.78 mol %, as observed by Kang et al, 60 induction time increased with temperature. Therefore, a decrease in THF content may delay hydrate formation.…”

Section: Advanced Imaging Techniquessupporting

confidence: 61%

“…222 Moreover, superabsorbent polymers (SAPs) have been utilized to improve CO 2 uptake in binary THF-CO 2 hydrate formation under static conditions, indicating a tangible advancement in the polymer field related to CO 2 storage enhancements. 60 The use of surfactant-assisted NPs is not only limited to enhancing the physical properties of hydrates but also ensures the colloidal suspension's stability, which is crucial for practical applications. 223 This supports the notion that an assortment of suitable NPs, surfactants, and polymers is readily available for research and development toward CO 2 hydrate stability and storage efficiency.…”

Section: Long-term Stabilitymentioning

confidence: 99%

See 1 more Smart Citation

Comprehensive Review and Perspectives of CO₂ Hydrate Storage in Subseafloor Saline Sediments: Formation, Stability, and Optimization Strategies

Kasala,

Fang,

Wang

et al. 2024

Energy Fuels

View full text Add to dashboard Cite

Exploring various strategies for CO 2 hydrate storage in subseafloor saline sediments reveals a promising yet challenging path toward mitigating anthropogenic CO 2 emissions and advancing clean energy development. Research has revealed the efficacy of sediment-specific modifications, including the use of inorganic emulsifiers, L-leucine (an amino acid), and nanoparticle coatings, in enhancing CO 2 hydrate formation stability and storage capacity. These modifications aid in overcoming the challenges posed by the harsh environmental conditions of salinity and sediment heterogeneity, providing increased stability, enhanced CO 2 adsorption efficiency, and reduced induction time. Furthermore, advancements in nanomaterials have introduced nanostructured encapsulation systems capable of confining and stabilizing CO 2 within a solid matrix under fluctuating pressure, temperature, and salinity conditions. Incorporating nanoparticles into polymers and surfactants yields a nanofluid that exhibits increased stability, improved wettability, interfacial tension (IFT) reduction, and elevated CO 2 hydrate storage efficiency, with the synergistic effects of these components playing a critical role. Moreover, innovative thermal and pressure manipulation strategies, alongside the integration of kinetic promoters, have shown significant potential in optimizing CO 2 hydrate formation kinetics and enhancing longterm stability. These strategies involve novel electrical heating systems, pressure management techniques, and chemical additives that collectively contribute to increased hydrate formation rates and gas storage capacities. Despite these promising developments, the field faces several challenges, including optimizing encapsulation materials to match geological characteristics, the long-term stability of CO 2 hydrates under extreme conditions, and scaling laboratory experiments to field applications. Addressing these issues necessitates a multifaceted approach, incorporating empirical data and theoretical insights to design, screen, and formulate effective CO 2 hydrate storage solutions in subseafloor saline sediments.

show abstract

Section: Advanced Imaging Techniquessupporting

confidence: 61%

Section: Long-term Stabilitymentioning

confidence: 99%

Comprehensive Review and Perspectives of CO₂ Hydrate Storage in Subseafloor Saline Sediments: Formation, Stability, and Optimization Strategies

Kasala,

Fang,

Wang

et al. 2024

Energy Fuels

View full text Add to dashboard Cite

show abstract

“…However, in porous media with dynamic surfactants, there is not enough experimental evidence to demonstrate the role of the composite system of the two. Kang et al 35 studied the effect of SDS as a kinetic promoter on the formation of hydrates in porous silica gel and discussed the kinetic behavior of CO 2 hydrate in porous media and the influence of kinetic accelerators on the formation kinetics. But the effects of different media types on hydrate formation also vary.…”

Section: Introductionmentioning

confidence: 99%

Investigation on Growth Kinetics of Hydrate on the Surface of an AC-QS Porous Media Composite System in an SDS System

Yuan,

Zhang,

Shang

et al. 2024

Energy Fuels

View full text Add to dashboard Cite

The anionic surfactant sodium dodecyl sulfate (SDS) used in industry is a kinetic accelerator that helps to form hydrates, but the hydrates formed are extremely unstable and cannot be well preserved and transported. Hydrates stored in porous media environments can serve as a means of transportation. In this work, SDS is combined with two porous media (quartz sand (QS) and activated carbon (AC) of different particle sizes) to form a composite system to study the effect of particle size on hydrate formation characteristics. Experimental results show that when a small particle size quartz sand layer is added to a 100% saturated sodium dodecyl sulfate solution, the hydrate gas storage capacity is 0.320 mol, while the surfactant solution without a porous medium layer is only 0.263 mol. Under the same particle size, the maximum water intake amounts of the QS layer and AC layer are 0.192 and 0.143 mol, respectively. The small size of activated carbon as a gas reservoir is not conducive to the formation and storage of hydrates. The AC layer gap composed of activated carbon with a particle size of 100 μm does not hinder the mass transfer of methane gas but only hinders the formation and storage of hydrates. The good adsorption capacity of the activated carbon layer can be used as a capture layer to capture the upward migration of unreacted liquid, which is beneficial to the storage of hydrates. In the AC-QS composite system, the AC layer is used to transfer the effect of SDS to drive hydrate growth along the wall to the upper layer. The gas storage capacity of the AC-QS composite system of different sizes is basically higher than the 172 mol/(mol of the separate QS system). And the average reaction rate is 2.65 mol/min. At the same time, under the QS-AC system, 100 mesh AC can increase the gas storage capacity by up to 21.6%. At the same time, experiments found that compared with the large-particle QS system as a hydrate generation layer, the small-particle QS system and the AC system with different particle sizes can better improve the hydrate gas storage capacity. This function of capturing migrating liquid through the AC layer can solve the problem of insufficient gas storage capacity caused by exposure of a large amount of hydrates to the gas phase environment.

show abstract

“…As a result, recent efforts have focused on improving the kinetics of hydrate formation through methods that enhance contact between the guest and the water molecules. A wide range of porous media has been investigated, including metal-organic frameworks (MOFs) [37], silica sands [38][39][40], silica gels [39,41], superabsorbent polymers (SAP) [42][43][44], glass beads [45], clay [46], activated carbon [47,48], nanotubes [49,50], and biological porous materials [51]. If we disregard the impact of porous media on the phase equilibrium of gas hydrates, it is commonly believed that such media can provide a greater number of nucleation sites [52,53], increase the gas-liquid contact areas [54], thus promoting hydrate formation kinetics.…”

Section: Introductionmentioning

confidence: 99%

Dry Water as a Promoter for Gas Hydrate Formation: A Review

Wei

Maeda

2023

Molecules

View full text Add to dashboard Cite

Applications of clathrate hydrate require fast formation kinetics of it, which is the long-standing technological bottleneck due to mass transfer and heat transfer limitations. Although several methods, such as surfactants and mechanical stirring, have been employed to accelerate gas hydrate formation, the problems they bring are not negligible. Recently, a new water-in-air dispersion stabilized by hydrophobic nanosilica, dry water, has been used as an effective promoter for hydrate formation. In this review, we summarize the preparation procedure of dry water and factors affecting the physical properties of dry water dispersion. The effect of dry water dispersion on gas hydrate formation is discussed from the thermodynamic and kinetic points of view. Dry water dispersion shifts the gas hydrate phase boundary to milder conditions. Dry water increases the gas hydrate formation rate and improves gas storage capacity by enhancing water-guest gas contact. The performance comparison and synergy of dry water with other common hydrate promoters are also summarized. The self-preservation effect of dry water hydrate was investigated. Despite the prominent effect of dry water in promoting gas hydrate formation, its reusability problem still remains to be solved. We present and compare several methods to improve its reusability. Finally, we propose knowledge gaps in dry water hydrate research and future research directions.

show abstract

Superabsorbent polymer for improved CO2 hydrate formation under a quiescent system

Cited by 13 publications

References 43 publications

Comprehensive Review and Perspectives of CO₂ Hydrate Storage in Subseafloor Saline Sediments: Formation, Stability, and Optimization Strategies

Comprehensive Review and Perspectives of CO₂ Hydrate Storage in Subseafloor Saline Sediments: Formation, Stability, and Optimization Strategies

Investigation on Growth Kinetics of Hydrate on the Surface of an AC-QS Porous Media Composite System in an SDS System

Dry Water as a Promoter for Gas Hydrate Formation: A Review

Contact Info

Product

Resources

About

Superabsorbent polymer for improved CO2 hydrate formation under a quiescent system

Cited by 13 publications

References 43 publications

Comprehensive Review and Perspectives of CO2 Hydrate Storage in Subseafloor Saline Sediments: Formation, Stability, and Optimization Strategies

Comprehensive Review and Perspectives of CO2 Hydrate Storage in Subseafloor Saline Sediments: Formation, Stability, and Optimization Strategies

Investigation on Growth Kinetics of Hydrate on the Surface of an AC-QS Porous Media Composite System in an SDS System

Dry Water as a Promoter for Gas Hydrate Formation: A Review

Contact Info

Product

Resources

About

Comprehensive Review and Perspectives of CO₂ Hydrate Storage in Subseafloor Saline Sediments: Formation, Stability, and Optimization Strategies

Comprehensive Review and Perspectives of CO₂ Hydrate Storage in Subseafloor Saline Sediments: Formation, Stability, and Optimization Strategies