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- Title
Adsorption Characteristics of Ionic Surfactants on Anthracite Surface: A Combined Experimental and Modeling Study.
- Authors
Bai, Xuyang; Yan, Guochao; Chen, Xuanlai; Li, Jiajun
- Abstract
Ionic surfactants are widely used in coal dust control in mines, and their adsorption characteristics on the coal surface have a great influence on the coal dust control effect. In this investigation, anionic sodium dodecylbenzenesulfonate (SDBS) and cationic octadecyltrimethylammonium chloride (STAC) were selected to explore the adsorption characteristics of ionic surfactants on the surface of anthracite. The experimental results show that the adsorption rate and efficiency of STAC on the surface of anthracite are higher than that of SDBS; STAC can form a denser surfactant layer on the surface of anthracite, with a larger adsorption capacity and higher strength. Molecular dynamics simulations show that the adsorption between STAC and the surface of anthracite is tighter, and the distribution at the coal–water interface is more uniform; the surface of anthracite modified by STAC has a stronger binding ability to water molecules.
- Subjects
IONIC surfactants; CATIONIC surfactants; SODIUM dodecylbenzenesulfonate; COAL dust; ADSORPTION (Chemistry); DUST control
- Publication
Molecules, 2022, Vol 27, Issue 16, p5314
- ISSN
1420-3049
- Publication type
Article
- DOI
10.3390/molecules27165314