The regulatory mechanism of dynamic wetting of bituminous coal influenced by the interfacial aggregation characteristics of LAE-[X] solutions

Surfaces and Interfaces, Journal Year: 2025, Volume and Issue: unknown, P. 105811 - 105811

Published: Jan. 1, 2025

Language: Английский

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Construction of a three-dimensional energy-stabilized macromolecular model of Daliuta coal and investigation of the influence of weak interactions on wettability: Dust pollution prevention and control

Journal of Molecular Liquids, Journal Year: 2024, Volume and Issue: 407, P. 125228 - 125228

Published: June 12, 2024

Language: Английский

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Study on a novel Hydraulic rotary wind-spray control combined dust reduction device for shearer

Process Safety and Environmental Protection, Journal Year: 2025, Volume and Issue: unknown, P. 106858 - 106858

Published: Feb. 1, 2025

Language: Английский

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Effects of wind velocity and cross spray on atomizing characteristics and dust removal efficiency of spray field

Powder Technology, Journal Year: 2025, Volume and Issue: 453, P. 120626 - 120626

Published: Jan. 6, 2025

Language: Английский

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Wetting Characteristics and Microscopic Synergistic Mechanism of Composite Surfactants on Coal Samples with Different Degrees of Metamorphosis

ACS Omega, Journal Year: 2025, Volume and Issue: 10(6), P. 6105 - 6118

Published: Feb. 10, 2025

This study investigates the effects of composite surfactants on wettability different coal types using a combination macroscopic experiments, mesoscopic and microscopic molecular dynamics simulations, with samples varying degrees metamorphism as research subjects. First, contact angle surface tension experiments were performed at level to determine optimal concentration ratio surfactants. The results showed that solution formed by mixing SLES AEO-9 in 3:2 significantly reduced both mass 0.5 wt %. Second, wetting properties analyzed scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, ζ-potential measurements. revealed total content hydrophobic groups (-CH3, -CH3&-CH2, C=C) molecules was after treatment solution, weakening hydrophobicity samples. Additionally, absolute value potential decreased, enhancing aggregation tendency between particles. facilitated formation larger agglomerated particles, which contributed settling dust. Simultaneously, cracks particles promoted penetration aqueous solutions, aiding seam. Finally, simulations conducted analyze synergistic mechanism level. surfactant effectively adsorbed onto molecules, facilitating movement water surface, increasing diffusion coefficient interaction energy within coal/composite surfactant/water system. These findings provide valuable insights for development new effects, offering significant applications mine dust control.

Language: Английский

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The influence mechanism of homo-tailed hetero-headed surfactants on the wettability of bituminous coal surface

Journal of Molecular Liquids, Journal Year: 2025, Volume and Issue: unknown, P. 127138 - 127138

Published: Feb. 1, 2025

Language: Английский

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Study on the effect of surfactant ethoxy content on the wettability adjustment of bituminous coal interface

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: 13(2), P. 115875 - 115875

Published: Feb. 18, 2025

Language: Английский

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Preparation of a vegetable-oil film-type emulsion dust suppressant and adsorption performance study on road dust surface in open-pit coal mines

Environmental Research, Journal Year: 2025, Volume and Issue: 278, P. 121737 - 121737

Published: April 30, 2025

Language: Английский

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Study of atomization characteristics and dust suppression effect of micro-nano bubble enhanced ultrasonic dry fog in excavation working face

Tunnelling and Underground Space Technology, Journal Year: 2025, Volume and Issue: 163, P. 106713 - 106713

Published: May 9, 2025

Language: Английский

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Studies on the Effects of Hydrophilic Groups and Hydrolyzed Cations of Anionic Surfactants on Solution Improvement of Surface Properties of Bituminous Coal

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: May 14, 2025

To investigate how the hydrolysis unit of anionic surfactants affects surface properties coal dust, combining macroscopic experiments (surface tension, dynamic contact angle, wettability settling, and conductivity) with microscopic simulations (molecular dynamics quantum chemistry), effects head groups cations on hydrophilicity hydrophobicity bituminous were jointly studied. The experimental results show that can synergistically enhance powder, two sulfonate carrying benzene rings corresponding worked best. interaction intensity between dust is mainly influenced by quantity, type, charge hydrolyzed cations. simulation findings indicate surfactant coverage spontaneous. form more H-bonds H2O promotion However, cation's ability to diffuse bind limited group. relative concentration, coordination number, diffusion coefficient verified this view. group cation first layer van der Waals electrostatic forces, respectively. Furthermore, potential molecular orbital energy demonstrate are extremely hydrophilic highly reactive. A comprehensive comparison reveals promote wetting in order SLDED > PDS SDBS SDS SDSN. research provide theoretical references for efficient screening suppressant.

Language: Английский

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