Experimental and molecular dynamics study into the surfactant effect upon coal wettability
Yi-ting Liu, Hongmei Li, Mingzhong Gao, Siqi Ye, Yun Zhao, Jing Xie, Gui-kang Liu, Junjun Liu, Luming Li, Jie Deng, Weiqi Zhou
Abstract
. The microstructural characteristics of coal samples allowed leveraging the Wiser model to construct three kinds of surfactant-coal adsorption models to dissect the adsorption configuration of the system. The results indicate that the addition of surfactants increases both the interaction of water with the coal and the diffusion coefficient of water molecules, resulting in the coal surface transformation from hydrophobicity to hydrophilicity. Our current work can provide salutary guidance and reference for coal water injection and dust suppression.
Topics & Concepts
WettingPulmonary surfactantMolecular dynamicsDynamics (music)CoalChemical engineeringChemistryMaterials scienceNanotechnologyChemical physicsComputational chemistryOrganic chemistryPhysicsEngineeringAcousticsAdsorption, diffusion, and thermodynamic properties of materialsMinerals Flotation and Separation TechniquesHydrocarbon exploration and reservoir analysis