Study on the effect of SDBS and SDS on deep coal seam water injection

Xu, Lianman; Du, Lei; Yang, Fengshuo; Zhang, Runjie; Wei, Hao; Wang, Gang; Hao, Zhe

doi:10.1016/j.scitotenv.2022.158930

Cited by 33 publications

(8 citation statements)

References 13 publications

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“…Cheng et al [29] added 0.1% sodium dodecyl benzene sulfonate (SDBS) to water and found that it can reduce the surface tension of water and enhance the effectiveness of coal-seam water injection. Xu et al [30] analyzed the mechanism of sodium dodecylbenzene sulfonate and sodium dodecyl sulfate (SDS) enhancing coal wetting from a microscopic perspective and discussed their applicable environments. Sun [31] utilized efficient wetting enhancers, Wang [32] employed viscoelastic surfactant (VES) fracturing fluid, and Wang [33] used bisamide-based cationic surfactants; their findings demonstrated that the application of these three reagents effectively enhanced the wetting effect of water on coal.…”

Section: Coal-seam Water Injection Technologymentioning

confidence: 99%

Review on Dust Control Technologies in Coal Mines of China

Huang,

Tao,

Chen

et al. 2024

Sustainability

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China faces a challenge in the sustainable development of the coal industry due to pneumoconiosis problems. Dust control technologies are crucial for safe production and miners’ health, ensuring the industry’s longevity. This article reviews the development process of dust prevention and control in underground coal mines in China, summarizes various technologies, and divides them into dust suppression, open-space dust reduction, and mine dust collectors according to different stages and environments of use. In dust suppression technologies, coal-seam water injection can reduce total dust generation by 60%, wet rock drilling can reduce drilling dust in the presence of stable water sources and high-pressure bearing equipment, and water-seal blasting can reduce blasting dust by 50–70%. In open-space dust reduction technologies, spray dust suppression can remove total dust by 50–95% and the removal efficiencies of foam dedusting for total and respirable dust are reported to reach 95% and 85% under the right conditions, respectively. In dust collector technologies, dry collectors can remove 80–95% of total dust. Wet collectors achieve up to 90% efficiency, dependent on water supply and waste processing. This article also discusses vapor heterogeneous condensation technology as a promising method for improving respirable dust removal in humid mine environments.

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Section: Coal-seam Water Injection Technologymentioning

confidence: 99%

Review on Dust Control Technologies in Coal Mines of China

Huang,

Tao,

Chen

et al. 2024

Sustainability

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“…Their research investigated the influence of oxygen-containing functional groups and minerals present in coal on coal's wettability. Additionally, they provided a microscopic perspective to elucidate the wetting mechanism of SDBS and SDS 10 . Laboratory experiments, as well as numerous field experiments, have been conducted to examine the effects of varying concentrations of monomer surfactants and composite surfactants on coal's wettability 11 .…”

Section: Introductionmentioning

confidence: 99%

Experimental study on the impact of “IDS + JFCS” complex wetting agent on the characteristics of coal bodies

Wang,

Xu,

Qin

et al. 2024

Sci Rep

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As China's coal mines have transitioned to deep mining, the ground stress within the coal seams has progressively increased, resulting in reduced permeability and poor wetting ability of conventional wetting agents. Consequently, these agents have become inadequate in fulfilling the requirements for preventing washouts during deep mining operations. In response to the aforementioned challenges, a solution was proposed to address the issues by formulating a composite wetting agent. This composite wetting agent combines a conventional surfactant with a chelating agent called tetrasodium iminodisuccinate (IDS). By conducting a meticulous screening of surfactant monomer solutions, the ideal formulation for the composite wetting agent was determined by combining the monomer surfactant with IDS. Extensive testing, encompassing evaluations of the composite solution's apparent strain, contact angle measurements, and alterations in the oxygenated functional groups on the coal surface, led to the identification of the optimal composition. This composition consisted of IDS serving as the chelating agent and fatty alcohol polyoxyethylene ether (JFCS).Subsequent assessment of the physical and mechanical performance of the coal briquettes treated with the composite wetting agent revealed notable enhancements. These findings signify significant advancements in the field and hold promising implications. Following the application of the composite wetting agent, notable reductions were observed in the dry basis ash and dry basis full sulfur of coal. Additionally, the water content within the coal mass increased significantly, leading to a substantial enhancement in the wetting effect of the coal body. This enhanced wetting effect effectively mitigated the coal body’s inclination towards impact, thereby offering technical support for optimizing water injection into coal seams and preventing as well as treating impact ground pressure.

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“…Surfactants, imidazole ionic liquids, and acidizing modification perform well in increasing the wettability of coal. However, these technologies generally face problems including a complex process, high cost, and environmentally unfriendly nature, which make these technologies difficult to be applied in mining fields of coal mines. − Therefore, it is an urgent demand to develop an environmentally friendly wetting agent with a good wetting effect, a simple preparation process, and low cost.…”

Section: Introductionmentioning

confidence: 99%

Study of Time-Varying Laws of Stability and Wettability of SiO₂–H₂O Nanofluids with Different Particle Sizes

Zhao,

Tian,

Xie

et al. 2023

Ind. Eng. Chem. Res.

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It has been proven that SiO2–H2O nanofluids have great application potential for water injection in coal seams. To explore the influences of the particle size on the stability and wettability of SiO2–H2O nanofluids, sedimentation observation of nanoparticles (NPs), viscosity tests, pH tests, surface tension tests, and contact angle tests were performed for SiO2–H2O nanofluids with different particle sizes. The research shows that the larger the particle size of SiO2 NPs, the more obvious the aggregation and sedimentation of NPs. The smaller the particle size of SiO2 NPs is, the lower the surface tension and contact angle of the SiO2–H2O nanofluids. As time goes on, SiO2–H2O nanofluids successively show time-varying characteristics in the low stability stage, moderate stability stage, and high stability stage. Therein, the low stability stage is the optimal period for enhancing the water injection in coal seams by nanofluids. The research provides theoretical support for using SiO2–H2O nanofluids to enhance water injection in coal seams.

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Study on the effect of SDBS and SDS on deep coal seam water injection

Cited by 33 publications

References 13 publications

Review on Dust Control Technologies in Coal Mines of China

Review on Dust Control Technologies in Coal Mines of China

Experimental study on the impact of “IDS + JFCS” complex wetting agent on the characteristics of coal bodies

Study of Time-Varying Laws of Stability and Wettability of SiO₂–H₂O Nanofluids with Different Particle Sizes

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Study on the effect of SDBS and SDS on deep coal seam water injection

Cited by 33 publications

References 13 publications

Review on Dust Control Technologies in Coal Mines of China

Review on Dust Control Technologies in Coal Mines of China

Experimental study on the impact of “IDS + JFCS” complex wetting agent on the characteristics of coal bodies

Study of Time-Varying Laws of Stability and Wettability of SiO2–H2O Nanofluids with Different Particle Sizes

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Product

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Study of Time-Varying Laws of Stability and Wettability of SiO₂–H₂O Nanofluids with Different Particle Sizes